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[SG] TOURMALINE STONE -NATURAL 2.5CTS [S1354 ]

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SEDAGEMS
TOURMALINE BIRTHSTONE FOR OCTOBER.
NATURAL UN HEATED
MINED IN BRAZIL 
GRADING  VS
MOHS SCALE 7-7.5
WEIGHT 2.5CTS
SIZE 10X 8X 4.5MM
 
 
 
 
 Tourmaline is a crystal silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline gem stones come in a wide variety of colors.Tourmaline has a variety of colors. Usually, iron-rich tourmalines are black to bluish-black to deep brown, while magnesium-rich varieties are brown to yellow, and lithium-rich tourmalines are almost any color: blue, green, red, yellow, pink etc. Rarely, it is colorless. Bi-colored and multicolored crystals are common, reflecting variations of fluid chemistry during crystallisation. Crystals may be green at one end and pink at the other, or green on the outside and pink inside: this type is called watermelon tourmaline. Some forms of tourmaline are dichroic, in that they change color when viewed from different directions.
Type 1 Gemstones
The following gemstones are typically inclusion free, even minor inclusions detract from their value.
Diamond, Amethyst, Beryls(Aquamarine,Morganite), Citrine, Smoky Quartz, topaz, Chrysoberyl, Kunzite, Tanzanite, green Tourmaline, and Blue Zircon
IF Internally flawless under extreme magnification (Very rare)
F Flawless
VVS Minute inclusions under 10x; invisible to the unaided eye
VS Minor inclusions under 10x; usually invisible to the unaided eye
SI1 Noticeable inclusions under 10x; usually visible to the unaided eye
SI2 Noticeable inclusions under 10x; usually quite visible to the unaided eye
I1 prominent- moderate affect on appearance or durability
I2 prominent - severe affect on appearance or durability
I3 prominent- severe affect on beauty, transparency or durability
Type 2 Gemstones
Gemstones that normally have small inclusions that do not detract from value.
Alexandrite, Andalusite, Iolite, Peridot, Rhodolite, Ruby, Sapphire, Spinel, Tourmaline, Garnet, Amethyst, Red Zircon, Tsavorite; Blue, Orange, Purple, Fluorite.Yellow and Parti-colored Tourmaline
F Flawless
VVS Minor inclusions under 10x; usually invisible to the unaided eye
VS Noticeable inclusions under 10x; often invisible to the unaided eye
SI1 Obvious inclusions under 10x; visible to the unaided eye
SI2 Obvious inclusions under 10x; very apparent to the unaided eye
I1 prominent - moderate affect on appearance or durability
I2 prominent - severe affect on appearance or durability
I3 prominent - severe affect on beauty, transparency or durability
 
 
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[SG] TOURMALINE STONE -NATURAL 2.5CTS [S1354 ]

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  • yobeone
    yobeone
    Pozitivan

    Beautiful piece/

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    yobeone
    Pozitivan

    Nice piece of jade.

78.71 CTS RARE MAW SIT SIT JADE -MYANMAR 78.71 CTS RARE MAW SIT SIT JADE -MYANMAR
  • yobeone
    yobeone
    Pozitivan

    Will make a beautiful necklace.

126 CTS RARE MAW SIT SIT JADE -MYANMAR 126 CTS RARE MAW SIT SIT JADE -MYANMAR
  • yobeone
    yobeone
    Pozitivan

    Nice colors.

276.35 CTS LAPIS LAZULI POLISHED -HAND PICKED [STS2321] 276.35 CTS LAPIS LAZULI POLISHED -HAND PICKED [STS2321]
  • yobeone
    yobeone
    Pozitivan

    Great looking piece.

180.92 CTS LAPIS LAZULI POLISHED -HAND PICKED [STS2314] 180.92 CTS LAPIS LAZULI POLISHED -HAND PICKED [STS2314]
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Detalji dostave

Troškovi:
Tranzit:
21 days putem Registered Shipping
Brodovi iz:
Australija

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Vrsta unosa : Standard
Identifikacijski broj proizvoda : 44290
Počinje : 19th December 2025 05:00 pm PST
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