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Natural 5.40 Ct Bi Color Tourmaline Top quality
- UGS
- Whosama
- Dimensions (mm)
- 9.4 x 8.5 x 7.5mm
- Poids (cts)
- 5.4
- Treatment
- No Treatment
- Shape
- Emerald, Square
- Type
- Faceted
- Clarity
- VVS
- Couleurs
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Key Features of a Top-Quality Bi-Color Tourmaline (5.40 ct)
1. Carat Weight
5.40 ct is considered a large size for tourmaline, especially if it’s high quality.
Larger bi-color tourmalines are much rarer and more valuable.
2. Bi-Color
“Bi-color” tourmaline typically features two distinct colors within a single crystal—common combinations include:
Pink and green (e.g., watermelon tourmaline)
Blue and green
Red and yellow
The value increases if the color transition is sharp and natural (not blended or muddy).
3. Quality Grading
Top-quality tourmaline would exhibit:
Excellent clarity (eye-clean or near flawless)
Vivid, saturated colors
Natural origin (not treated or enhanced)
Expert cut that maximizes brilliance and shows off both colors distinctly
4. Shape and Cut
Common cuts: Emerald, shapes that highlight the bi-color zoning.
Precision cutting enhances the contrast between the two colors.
5. Origin
Premium bi-color tourmalines often come from:
Afghanistan
| Fournisseur d'expédition | Expédition vers Thaïlande | Expédition dans le reste du monde | Expédition combinée ( Thaïlande ) | Expédition combinée (reste du monde) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
Pas disponible |
|
| FedEx |
|
|
Pas disponible |
|
| Standard Shipping - Untracked |
|
|
Pas disponible |
|
| UPS |
|
|
Pas disponible |
|
- UGS
- Whosama
- Dimensions (mm)
- 9.4 x 8.5 x 7.5 mm
- Poids (cts)
- 5.4
- Treatment
- No Treatment
- Shape
- Emerald, Square
- Type
- Faceted
- Clarity
- VVS
- Couleurs
-
Key Features of a Top-Quality Bi-Color Tourmaline (5.40 ct)
1. Carat Weight
5.40 ct is considered a large size for tourmaline, especially if it’s high quality.
Larger bi-color tourmalines are much rarer and more valuable.
2. Bi-Color
“Bi-color” tourmaline typically features two distinct colors within a single crystal—common combinations include:
Pink and green (e.g., watermelon tourmaline)
Blue and green
Red and yellow
The value increases if the color transition is sharp and natural (not blended or muddy).
3. Quality Grading
Top-quality tourmaline would exhibit:
Excellent clarity (eye-clean or near flawless)
Vivid, saturated colors
Natural origin (not treated or enhanced)
Expert cut that maximizes brilliance and shows off both colors distinctly
4. Shape and Cut
Common cuts: Emerald, shapes that highlight the bi-color zoning.
Precision cutting enhances the contrast between the two colors.
5. Origin
Premium bi-color tourmalines often come from:
Afghanistan
| Fournisseur d'expédition | Expédition vers Thaïlande | Expédition dans le reste du monde | Expédition combinée ( Thaïlande ) | Expédition combinée (reste du monde) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
Pas disponible |
|
| FedEx |
|
|
Pas disponible |
|
| Standard Shipping - Untracked |
|
|
Pas disponible |
|
| UPS |
|
|
Pas disponible |
|
The Best Place to Shape Your Jewllery.
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PositifThe shipping was extremely fast and the Ruby is beautiful-
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Positif
Beautiful gemstone.
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Négatif
The colors in the photo have been heavily edited; the seller tried to hide the crack/flaw in the picture. This is a dishonest seller. I do not recommend anyone buy from this seller.
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Positif
Delivered timely and as described. Very pleased with my order. Thank you very much, I look forward to doing business with you in the future. Thanks Again
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Positif
Very nice stone
Pourquoi les utilisateurs se surenchérissent-ils ?
Lorsqu'une enchère est placée, il s'agit du montant maximum qu'une personne est prête à enchérir pour le produit. Notre système enchérira alors automatiquement au nom de l'enchérisseur, augmentant progressivement l'enchère jusqu'au maximum pour maintenir sa position de meilleur enchérisseur.
Lorsqu'une icône indiquant « Enchère automatique » apparaît, cela signifie que notre système place activement des enchères pour l'enchérisseur en fonction de son enchère maximale. Cela peut donner l'impression que les enchérisseurs se surenchérissent, mais c'est simplement le résultat de la mise à jour de l'enchère par le système pour refléter la limite maximale des enchérisseurs.
Audit
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Description Précis
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Images précises
Comments
After thorough evaluation of the Verified seller's information provided, Gem Rock Auctions has found accurate and honest pictures and details for this listing. Gem Rock Auctions is committed to holding our sellers to the highest standards of integrity and transparency. As part of this policy, we only permit the sale of natural, earth mined, gemstones. Manmade, synthetic, and imitation gemstones are not permitted on Gem Rock auctions. Many Gemstones have received treatments to enhance their color and/or clarity to further emphasize their beauty and we insist treatments are disclosed. Unless accompanied by a report from an approved laboratory, all origins or treatments declared in the listing are the sellers' opinion. There are limitations to what can be determined without physically handling the listed item.
