Chrome Tourmaline Gemstone: Properties, Meanings, Value & More

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Chrome tourmaline is a type of tourmaline gemstone known for its lush green hues. This tourmaline variety was only officially discovered in the late 1900s.

Is chrome tourmaline rare? Generally, yes. Though not as rare as varieties like Paraiba tourmaline or rubellite, chrome tourmaline is much rarer and more sought-after than other types of green tourmalines. It’s even rarer than tsavorite garnet and emerald!

You might wonder: what is the rarest color of tourmaline? Spoiler alert: it’s not green. It’s actually blue! But green tourmalines that classify as chrome tourmaline are still rare.

Intrigued? Then stick around to find out all about chrome tourmaline gemstone prices, properties, and powers. By the end, you’ll have all the info you need to shop for chrome tourmalines with confidence.

What Is A Chrome Tourmaline?

Chrome tourmaline (sometimes called “chromium tourmaline”) is a green tourmaline defined by its coloring agents: chromium and sometimes vanadium.

What does chrome tourmaline look like? Despite being a semi-precious gemstone, chrome tourmaline can display rich green hues that give the precious gemstone emerald a run for its money.

As a tourmaline, this gem is an October birthstone, Libra zodiac stone, and 8th wedding anniversary gem. Individually, chrome tourmaline is a zodiac stone for Sagittarius.

Given its resemblance to emerald at a lower price point, chrome tourmaline can serve as a more affordable May birthstone or 20th wedding anniversary gem alternative.

Wondering how emerald and chrome tourmaline differ? We’ll tell you, but first you’ll need to know about chrome tourmaline’s individual mineral properties.

Chrome Tourmaline Specifications & Characteristics

Tourmaline is a broad, complex gemstone family with multiple groupings and varieties. While most gem-quality tourmaline varieties are in the elbaite species (or series), chrome tourmaline is one of the few in the dravite species.

Dravite tourmalines are rich in sodium and magnesium. They’re often called “brown tourmalines,” as dravites are typically dark yellow to brown. However, they can also be dark red, yellow, light cyan, black, colorless, and of course, deep green.

As a dravite, chrome tourmaline is diamagnetic, meaning it’s repelled by magnets.

The ideal formula for this chrome dravite is NaMg3Cr6Si6O18(BO3)3(OH)3OH.

Some rare chrome tourmalines from western Australia are euhedral — having distinct, well-formed crystal faces — which is a rare property in tourmalines.

Below are the remaining chrome tourmaline properties:

Mohs hardness: 7-7.5
Color: Shades of green, typically medium to high saturation
Crystal structure: Hexagonal (trigonal)
Luster: Vitreous (glassy)
Transparency: Transparent to opaque
Refractive index: 1.615-1.655
Density: 3.00-3.26
Cleavage: Poor, 2-directions
Fracture: Conchoidal or uneven
Streak: White
Luminescence: Fluorescence sometimes present but weak
Pleochroism: Present & strong - Dark green to yellow-green
Birefringence: 0.018-0.020
Dispersion: 0.017 (moderate)
Optical effects: Sometimes chatoyancy

With those properties in mind, let’s see how chrome tourmaline’s traits stack up against similar stones like chrome diopside, emerald, and tsavorite.

Chrome Tourmaline vs. Similar Gems

Chrome tourmaline’s similarity to other gems goes beyond just emerald — you might mix it up with chrome diopside, tsavorite garnet, or even other green tourmalines.

Let’s start with emeralds.

Pictured above: Emerald

Chrome Tourmaline vs. Emerald

Both chrome tourmaline and emerald are colored by chromium and sometimes vanadium, and both are popular gems. However, their differing semi-precious vs. precious statuses are just one of their many differences.

For one, emerald is a variety of beryl, a beryllium aluminum silicate distinct from tourmaline.

Secondly, emeralds are actually less rare than chrome tourmaline. Value-wise, however, chrome tourmaline is almost always less expensive.

For identification, hardness is one distinguishing factor. Emeralds rank at 7.5 to 8 on the Mohs mineral hardness scale, slightly higher than chrome tourmalines.

While chrome tourmalines usually have better clarity than emeralds, they’re also typically darker-colored.

Pictured above: Tsavorite

Chrome Tourmaline vs. Tsavorite

Another beloved gem confused with chrome tourmaline is tsavorite garnet. Both stones primarily come from East Africa and share similar green hues with yellow to blue undertones. Tsavorite’s green similarly comes from vanadium and sometimes chromium.

Like most of these comparisons, the first difference is gem species. Tsavorite is a variety of grossular garnet, completely separate from tourmaline.

Next is rarity. Though similarly semi-precious, tsavorite is actually rarer than emerald but not as rare as chrome tourmaline. However, chrome tourmaline is significantly less expensive than tsavorite.

Next, what is the difference between chrome diopside and chrome tourmaline?

Pictured above: Chrome diopside

Chrome Tourmaline vs. Chrome Diopside

By names alone, it’s easy to mix up chrome tourmaline and chrome diopside. Both get their green color from chromium and sometimes vanadium, like emeralds.

The biggest difference is their gem family. Chrome diopside is a variety of diopside, a monoclinic, calcium magnesium silicate distinct from tourmaline.

A second difference is rarity (and thus, value). Chrome diopside is much more abundant and affordable than chrome tourmaline.

In terms of identification, you can look at each stone’s hardness. Chrome diopside only ranks at 5 to 6 on the Mohs scale, lower than chrome tourmaline. That also means a chrome tourmaline ring is more durable than a chrome diopside ring.

Lastly, what is the difference between green tourmaline and chrome tourmaline?

Pictured above: Verdelite tourmaline

Chrome Tourmaline vs. Green Tourmaline

Though Paraiba tourmalines can be green and indicolites often have green undertones, most green tourmalines fall under the verdelite variety.

Verdelite tourmaline, nicknamed “green tourmaline,” includes basically all green shades. The exception is greens caused by chromium impurities, distinguishing verdelites from chrome tourmaline. Due to their chromium content, chrome tourmalines generally have more saturated colors.

Vanadium impurities may be present in either type of green tourmalines, but most non-chrome green tourmalines are colored by iron and titanium.

Like chrome diopside, another difference is rarity (and thus, value again). Chrome tourmaline’s greens are considered the best possible green shades for tourmaline, raising its value.

Chrome tourmaline’s rarity extends to its size, with smaller sizes available and bigger price-per-carat jumps than other green tourmalines.

Chrome Tourmaline Meaning & History

Chrome tourmaline symbolizes joy, generosity, and hopefulness. Its deep green hues evoke ideals of new beginnings, balance, and growth.

Since it’s a newer find in the tourmaline family, chrome tourmaline doesn’t have much folklore associated with it.

History

Perhaps unsurprisingly, chrome tourmaline’s name comes from its chromium content.

The first record of chrome tourmaline came from H. Bassett’s report in the 1956 edition Jeweler’s Quarterly on the new tourmaline variety from Tanzania. The new tourmalines differed from other green tourmalines, like those from Brazil, with a more pure green color.

The trade name “chrome tourmaline” came about because mineralogists assumed chromium was behind the color. Funny enough, Bassett’s analysis led him to theorize that vanadium was the color’s true cause.

In 1982, H. Bank similarly reported not finding much chromium in the chrome tourmalines from East Africa. However, Bank’s later research with U. Henn revealed more chromium than vanadium in Tanzanian specimens tested after Bank’s initial analyses. Bank and Henn published their updated analysis in the 1988 issue of Journal of the German Gemological Society.

Chrome Tourmaline Healing Properties

Like all gems, chrome tourmaline can function as a healing stone. The crystal’s green coloring means it possesses the balancing and nurturing properties inherent to green gemstones.

Additionally, green stones like chrome tourmaline are great heart chakra stones, opening this energy center to bring you love and acceptance.

Physical Healing

Crystal healers recommend using chrome tourmaline to help with:

Arthritis & joint pain
Immune system function
Infection prevention
Heart problems

Emotional Healing

Emotionally, chrome tourmaline is said to help you heal from heartbreak or grief. They can also help you understand yourself and the world better, along with boosting self-esteem and focus.

Beyond healing, is green tourmaline valuable? Each tourmaline stone’s value is graded based on certain properties.

Chrome Tourmaline Gemstone Properties

Chrome tourmaline’s value depends on its color, cut, clarity, carat weight, treatments, and authenticity.

Color

The best chrome tourmaline color is usually a medium emerald-green, though preferences differ. For instance, pastel color trends may raise demand for mint green chrome tourmaline. Pure greens are most valuable, though blue-greens are still valuable. Yellow undertones are less valuable.

Like the copper content that defines Paraiba tourmalines and gives them their signature bright hues, chromium and vanadium are the secret to chrome tourmaline’s emerald-like coloring.

Cut

Chrome tourmaline is available in a wide range of cuts. For darker stones, lapidaries must choose faceted cuts that bring out the saturation and don’t let the dark tone hide chrome tourmaline’s sparkle or pleochroism.

Common cuts for darker stones are brilliant or checkerboard shapes, while generally popular cuts for chrome tourmalines include trillion, cushion, round, and oval shapes.

Lower-quality material may be cut as cabochons or carved. Specimens with chatoyancy (the “cat’s eye” effect) must be cut as cabochons to display the effect.

Clarity

Unlike many other tourmalines, chrome tourmaline has a Type I colored gemstone clarity grade, meaning most specimens don’t have visible inclusions. Visible inclusions will lower value.

Inclusions that may be present include:

Color zoning
Long, thin liquid and/or gas inclusions
Reflective fractures filled with gas

Carat Weight & Size

Good-quality, faceted chrome tourmaline gemstones are usually 1-2 carats. Stones weighing 8 carats or more are rare, especially gem-quality ones. Chrome tourmaline’s price-per-carat generally increases above 1 carat.

Treatments & Simulants

In contrast to most tourmaline varieties, chrome tourmaline is not routinely heated or irradiated. Some darker specimens are heated to be lighter, but this isn’t common.

More often, other green tourmalines are treated and sold as chrome tourmalines. You can check the authenticity by looking for red or pink under a Chelsea filter, confirming chromium is present.

Other stones sometimes used as chrome tourmaline simulants include dyed quartz or spinel.

Chrome Tourmaline Formation & Sources

Most tourmalines form in granite pegmatites, granite, schists, and marble. Dravites like chrome tourmaline are usually only found in metamorphic rocks like marble and schists.

The crystal’s formation starts when water carrying dissolved elements settles into crevices of rocks. The water then evaporates, leaving the elements behind to crystallize. In this case, chromium must be present for chrome tourmaline to form.

Mining Locations

The number-one source for chrome tourmaline gems is Tanzania. Other sources are:

China
Kazakhstan
Kenya
Myanmar
Nigeria

Before we start wrapping up, we have to talk about what prices to expect for chrome tourmaline.

Chrome Tourmaline Price & Value

Given its rarity and popularity, chrome tourmaline gemstones can carry a relatively high price. For faceted chrome tourmaline, price-per-carat ranges are $100 to $500 per carat in 0.5- to 1-carat stones. Gems weighing 1 to 5 carats are $100 to $2,000 per carat.

Chrome tourmaline cabochons generally cost $20 to $50 per carat. Cat’s eye cabochons are slightly higher and change by weight category:

0.5 to 1 carat: $35 to $100 per carat
1 to 5 carats: $35 to $200 per carat
5+ carats: $35 to $400 per carat

Wholesale prices for raw chrome tourmaline range from around $2 to $20 per carat.

Chrome Tourmaline Care and Maintenance

Chrome tourmaline gemstone care is pretty straightforward. Virtually any jewelry option for chrome tourmaline is good for everyday wear, with or without protective settings.

You can clean chrome tourmaline with the standard soft toothbrush, lukewarm water, and mild soap. Rinse any soap residue away and dry it with a soft cloth.

Store your chrome tourmaline away from other gems to prevent scratches.

Charmed By Chrome Tourmaline?

It may not come up as much as Paraiba tourmaline or rubellite, but chrome tourmaline isn’t a tourmaline to overlook. If your budget is tight, you can always opt for a verdelite tourmaline — but if you have the means, chrome tourmaline is a luxurious stone comparable (and less expensive) to even legendary emeralds.

Buy chrome tourmaline gemstones today!

Chrome Tourmaline Gemstones

Kromirani turmalin vrsta je dragog kamena turmalina poznatog po svojim bujnim zelenim nijansama. Ova vrsta turmalina službeno je otkrivena tek kasnih 1900-ih.

Je li krom turmalin rijedak? Općenito, da. Iako nije tako rijedak kao vrste poput Paraiba turmalina ili rubelita, kromirani turmalin mnogo je rjeđi i traženiji od drugih vrsta zelenih turmalina. Još je rjeđi od granata tsavorita i smaragda!

Možda se pitate: koja je najrjeđa boja turmalina? Upozorenje za spojler: nije zeleno. Zapravo je plava! Ali zeleni turmalini koji se klasificiraju kao kromirani turmalini još uvijek su rijetki.

Zaintrigirani? Zatim ostanite i saznajte sve o cijenama, svojstvima i moćima dragog kamenja krom turmalin. Na kraju ćete imati sve informacije koje su vam potrebne da s povjerenjem kupujete kromirane turmaline.

Što je kromirani turmalin?

Kromirani turmalin (ponekad zvan "kromov turmalin") zeleni je turmalin definiran svojim bojilima: kromom i ponekad vanadijem.

Kako izgleda kromirani turmalin? Unatoč tome što je poludragi dragi kamen , kromirani turmalin može pokazati bogate zelene nijanse koje daju dragocjenom dragom kamenu smaragdu trku za svoj novac.

Kao turmalin, ovaj dragulj je kamen za rođenje u listopadu , kamen zodijaka Vaga i dragulj za 8. godišnjicu braka . Pojedinačno, krom turmalin je kamen zodijaka za Strijelca.

S obzirom na njegovu sličnost sa smaragdom po nižoj cijeni, kromirani turmalin može poslužiti kao pristupačnija alternativa za rođendanski kamen za svibanj ili 20. godišnjicu braka.

Pitate se po čemu se razlikuju smaragd i krom turmalin? Reći ćemo vam, ali prvo ćete morati znati o pojedinačnim mineralnim svojstvima krom turmalina.

Specifikacije i karakteristike kromiranog turmalina

Turmalin je široka, složena obitelj dragog kamenja s više skupina i varijanti. Dok je većina vrsta turmalina kvalitete dragog kamenja u vrsti (ili seriji) elbaita, kromirani turmalin jedan je od rijetkih u vrsti dravita.

Dravit turmalini su bogati natrijem i magnezijem. Često se nazivaju "smeđi turmalini", jer su draviti obično tamno žuti do smeđi. Međutim, mogu biti i tamnocrvene, žute, svijetlo cijan, crne, bezbojne i, naravno, tamno zelene.

Kao dravit, krom turmalin je dijamagnetičan, što znači da ga magneti odbijaju.

Idealna formula za ovaj krom-dravit je NaMg3Cr6Si6O18(BO3)3(OH)3OH.

Neki rijetki kromirani turmalini iz zapadne Australije su euedralni - imaju jasna, dobro oblikovana kristalna lica - što je rijetko svojstvo turmalina.

Ispod su preostala svojstva krom turmalina:

Mohsova tvrdoća : 7-7,5
Boja : nijanse zelene, obično srednje do visoke zasićenosti
Kristalna struktura : Heksagonalna (trigonalna)
Sjaj : staklasto (staklasto)
Transparentnost : od prozirne do neprozirne
Indeks loma : 1,615-1,655
Gustoća : 3,00-3,26
Cijepanje : Loše, dvosmjerno
Prijelom : konkoidalan ili neravan
Pruga : Bijela
Luminescencija : Fluorescencija ponekad prisutna, ali slaba
Pleokroizam : prisutan i jak - tamnozelen do žutozelen
Dvolomnost : 0,018-0,020
Disperzija : 0,017 (umjereno)
Optički efekti : Ponekad brbljavost

Imajući ta svojstva na umu, pogledajmo kako se svojstva krom turmalina slažu sa sličnim kamenjem poput krom diopsida, smaragda i tsavorita.

Krom turmalin u odnosu na slične dragulje

Sličnost kromiranog turmalina s drugim draguljima nadilazi samo smaragd — možete ga pomiješati s krom diopsidom, tsavorit granatom ili čak drugim zelenim turmalinima.

Počnimo sa smaragdima.

Na gornjoj slici: Emerald

Krom turmalin protiv smaragda

I kromirani turmalin i smaragd obojeni su kromom, a ponekad i vanadijem, a oba su popularni dragulji. Međutim, njihov različit status poludragog naspram dragog samo je jedna od njihovih brojnih razlika.

Kao prvo, smaragd je varijanta berila , berilij aluminij silikata koji se razlikuje od turmalina.

Drugo, smaragdi su zapravo manje rijetki od kromiranog turmalina. Što se tiče vrijednosti, međutim, kromirani turmalin gotovo je uvijek jeftiniji .

Za identifikaciju, tvrdoća je jedan od faktora razlikovanja. Smaragdi su rangirani od 7,5 do 8 na Mohsovoj mineralnoj ljestvici tvrdoće , nešto više od krom turmalina.

Dok kromirani turmalini obično imaju bolju čistoću od smaragda, također su obično tamnije boje.

Na gornjoj slici: Tsavorite

Kromirani turmalin protiv Tsavorita

Još jedan dragi dragulj koji se brka s kromiranim turmalinom je granat tsavorit . Oba kamena prvenstveno dolaze iz istočne Afrike i dijele slične zelene nijanse sa žutim do plavim tonovima. Tsavoritovo zeleno na sličan način dolazi od vanadija i ponekad kroma.

Kao i većina ovih usporedbi, prva razlika je vrsta dragulja . Tsavorit je vrsta grosularnog granata , potpuno odvojena od turmalina.

Sljedeće je rijetkost . Iako je slično poludragocjen, tsavorit je zapravo rjeđi od smaragda, ali nije tako rijedak kao kromirani turmalin. Međutim, krom turmalin je znatno jeftiniji od tsavorita.

Zatim, koja je razlika između krom diopsida i krom turmalina?

Na gornjoj slici: Krom diopsid

Krom turmalin u odnosu na krom diopsid

Samo po nazivima, lako je pomiješati krom turmalin i krom diopsid . Oba dobivaju zelenu boju od kroma i ponekad vanadija, poput smaragda.

Najveća razlika je njihova obitelj dragulja . Krom diopsid je varijanta diopsida, monoklinski, kalcij magnezij silikat koji se razlikuje od turmalina.

Druga razlika je rijetkost (a time i vrijednost). Krom diopsid je mnogo zastupljeniji i pristupačniji od krom turmalina.

U smislu identifikacije, možete pogledati tvrdoću svakog kamena. Krom diopsid rangiran je samo na 5 do 6 na Mohsovoj ljestvici, niže od krom turmalina. To također znači da je prsten s kromiranim turmalinom izdržljiviji od prstena s kromiranim diopsidom.

Na kraju, koja je razlika između zelenog turmalina i kromiranog turmalina?

Slika gore: Verdelite turmalin

Kromirani turmalin protiv zelenog turmalina

Iako Paraiba turmalini mogu biti zeleni, a indikoliti često imaju zelene nijanse, većina zelenih turmalina spada u verdelite.

Verdelite turmalin, nadimak "zeleni turmalin", uključuje u osnovi sve zelene nijanse. Iznimka je zelenilo uzrokovano nečistoćama kroma , što razlikuje verdelite od krom turmalina. Zbog sadržaja kroma kromirani turmalini općenito imaju zasićenije boje.

Nečistoće vanadija mogu biti prisutne u bilo kojoj vrsti zelenih turmalina, ali većina zelenih turmalina bez kroma obojena je željezom i titanom.

Poput krom diopsida, još jedna razlika je rijetkost (a time i vrijednost). Kromirane zelene nijanse turmalina smatraju se najboljim mogućim zelenim nijansama turmalina, što mu podiže vrijednost.

Rijetkost kromiranog turmalina proširuje se na njegovu veličinu , s dostupnim manjim veličinama i većim skokovima cijene po karatu od ostalih zelenih turmalina.

Krom turmalin Značenje i povijest

Hromirani turmalin simbolizira radost, velikodušnost i nadu. Njegove duboke zelene nijanse evociraju ideale novih početaka, ravnoteže i rasta.

Budući da je to novije otkriće u obitelji turmalina, kromirani turmalin nema puno folklora povezanih s njim.

Povijest

Možda ne iznenađuje da ime krom turmalina dolazi od njegovog sadržaja kroma.

Prvi zapis o kromiranom turmalinu potječe iz izvješća H. Bassetta u izdanju Jeweller's Quarterly iz 1956. o novoj vrsti turmalina iz Tanzanije. Novi turmalini razlikovali su se od ostalih zelenih turmalina, poput onih iz Brazila, čišćom zelenom bojom.

Trgovački naziv "kromirani turmalin" nastao je jer su mineralozi pretpostavili da iza boje stoji krom. Dovoljno smiješno, Bassettova analiza dovela ga je do teorije da je vanadij pravi uzrok boje.

Godine 1982. H. Bank je na sličan način izvijestio da nije pronašao mnogo kroma u kromiranim turmalinima iz istočne Afrike. Međutim, kasnije Bankovo istraživanje s U. Hennom otkrilo je više kroma nego vanadija u tanzanijskim uzorcima testiranim nakon Bankovih početnih analiza. Bank i Henn objavili su svoju ažuriranu analizu u izdanju Journal of the German Gemological Society iz 1988. godine.

Ljekovita svojstva krom turmalina

Kao i svi dragulji, kromirani turmalin može djelovati kao ljekoviti kamen . Zelena boja kristala znači da posjeduje balansirajuća i njegujuća svojstva svojstvena zelenom dragom kamenju .

Osim toga, zeleno kamenje poput kromiranog turmalina odlično je kamenje srčane čakre , otvara ovaj energetski centar da vam donese ljubav i prihvaćanje.

Fizičko iscjeljenje

Iscjelitelji kristalima preporučuju korištenje krom turmalina za pomoć kod:

Artritis i bolovi u zglobovima
Funkcija imunološkog sustava
Prevencija infekcije
Problemi sa srcem

Emocionalno iscjeljivanje

Emocionalno, za krom turmalin se kaže da vam pomaže da se izliječite od slomljenog srca ili tuge. Također vam mogu pomoći da bolje razumijete sebe i svijet, uz jačanje samopoštovanja i fokusa.

Osim što liječi, je li zeleni turmalin vrijedan? Vrijednost svakog kamena turmalina ocjenjuje se na temelju određenih svojstava.

Svojstva dragog kamenja krom turmalin

Vrijednost kromiranog turmalina ovisi o njegovoj boji, rezu, čistoći, težini u karatima, tretmanima i autentičnosti.

Boja

Najbolja boja krom turmalina obično je srednje smaragdno zelena, iako su preferencije različite. Na primjer, trendovi pastelnih boja mogu povećati potražnju za menta zelenim krom turmalinom. Čisto zeleno je najvrjednije, iako je plavozeleno još uvijek vrijedno. Žuti podtonovi manje su vrijedni.

Poput sadržaja bakra koji definira Paraiba turmaline i daje im prepoznatljive svijetle nijanse, krom i vanadij tajna su smaragdne boje kromiranog turmalina.

Izrezati

Kromirani turmalin dostupan je u širokom rasponu rezova. Za tamnije kamenje, lapidari moraju odabrati fasetirane rezove koji naglašavaju zasićenost i ne dopuštaju da tamni ton sakrije svjetlucanje ili pleokroizam kromiranog turmalina.

Uobičajeni rezovi za tamnije kamenje su briljanti ili oblici šahovnice, dok općenito popularni rezovi za kromirane turmaline uključuju trilijun, jastuk, okrugle i ovalne oblike.

Materijal slabije kvalitete može se rezati kao kabošoni ili rezbariti. Uzorci s brbljivošću (efekt "mačjeg oka") moraju se izrezati kao kabošoni da bi se pokazao efekt.

Jasnoća

Za razliku od mnogih drugih turmalina, kromirani turmalin ima stupanj čistoće dragog kamenja u boji tipa I, što znači da većina primjeraka nema vidljive inkluzije . Vidljive inkluzije će smanjiti vrijednost.

Uključivanja koja mogu biti prisutna uključuju:

Zoniranje boja
Dugi, tanki tekući i/ili plinoviti uključci
Reflektirajuće frakture ispunjene plinom

Težina i veličina u karatima

Kvalitetno, fasetirano drago kamenje krom turmalin obično ima 1-2 karata. Kamenje koje teži 8 karata ili više je rijetko, osobito ono dragog kvaliteta. Cijena po karatu krom turmalina općenito raste iznad 1 karata.

Tretmani i simulansi

Za razliku od većine vrsta turmalina, kromirani turmalin se ne zagrijava ili zrači rutinski. Neki tamniji primjerci se zagrijavaju da bi bili svjetliji, ali to nije uobičajeno.

Češće se drugi zeleni turmalini tretiraju i prodaju kao kromirani turmalini. Možete provjeriti autentičnost traženjem crvene ili ružičaste boje ispod Chelsea filtera , potvrđujući prisutnost kroma.

Ostalo kamenje koje se ponekad koristi kao simulans krom turmalina uključuje obojeni kvarc ili spinel .

Stvaranje krom turmalina i izvori

Većina turmalina nastaje u granitnim pegmatitima, granitu, škriljcima i mramoru. Dravite poput krom turmalina obično se nalaze samo u metamorfnim stijenama poput mramora i škriljaca.

Stvaranje kristala počinje kada se voda koja nosi otopljene elemente taloži u pukotinama stijena. Voda tada isparava, ostavljajući elemente da se kristaliziraju. U ovom slučaju, krom mora biti prisutan da bi se formirao krom turmalin.

Lokacije rudarenja

Izvor broj jedan za drago kamenje krom turmalin je Tanzanija. Ostali izvori su:

Kina
Kazahstan
Kenija
Mianmar
Nigerija

Prije nego što završimo, moramo razgovarati o cijenama za krom turmalin.

Cijena i vrijednost krom turmalina

S obzirom na njegovu rijetkost i popularnost, kromirani turmalin može imati relativno visoku cijenu. Za fasetirani kromirani turmalin, raspon cijena po karatu je 100 do 500 USD po karatu u kamenju od 0,5 do 1 karata. Drago kamenje težine od 1 do 5 karata je 100 do 2000 dolara po karatu.

Kabochoni od kromiranog turmalina općenito koštaju 20 do 50 USD po karatu. Kabochoni mačjeg oka nešto su viši i mijenjaju se prema kategoriji težine:

0,5 do 1 karat : 35 do 100 dolara po karatu
1 do 5 karata : 35 do 200 dolara po karatu
5+ karata : 35 do 400 dolara po karatu

Veleprodajne cijene za sirovi krom turmalin kreću se od oko 2 do 20 dolara po karatu.

Njega i održavanje krom turmalina

Njega dragog kamenja krom turmalin prilično je jednostavna. Gotovo svaka opcija nakita za kromirani turmalin dobra je za svakodnevno nošenje, sa ili bez zaštitnih postavki .

Kromirani turmalin možete očistiti standardnom mekom četkicom za zube, mlakom vodom i blagim sapunom. Isperite sve ostatke sapuna i osušite ih mekom krpom.

Čuvajte kromirani turmalin dalje od drugih dragulja kako biste spriječili ogrebotine.

Očarani krom turmalinom?

Možda se ne pojavljuje toliko kao Paraiba turmalin ili rubelit , ali kromirani turmalin nije turmalin koji treba zanemariti. Ako vam je proračun ograničen, uvijek se možete odlučiti za verdelit turmalin — ali ako imate mogućnosti, kromirani turmalin je luksuzan kamen usporediv (i jeftiniji) čak i s legendarnim smaragdima.

Kupite krom turmalin drago kamenje danas!