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6.470 ct Natural Bolivian Ametrine
- SKU
- Dimensions (mm)
- 11.800 x 11.300 x 5.800mm
- Weight (cts)
- 6.470
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Ametrine is a bi-color quartz variety that, as its name suggests, is a unique combination of amethyst and citrine within a single crystal. How the gem forms is still a bit of a mystery, but the differences in color are believed to be the result of the presence of iron in different states of oxidation from natural heating. Combining the golden sunburst of citrine with the violet sunset of amethyst, this naturally colored gem is commercially mined at a single source: the remote Anah mine in Bolivia and is shrouded in fascinating local legends and lore.
- Origin Bolivia
- Treatment None
Feel free to to “make an offer” on our other items :)
We Accept Payments through
- Paypal
- Direct Deposit
- Credit Cards
AMETRINE CLASSIFICATION
- Common Name Ametrine
- Species Quartz
- Variety Ametrine
- Colors Bicolored Combination Of Purple, Yellow
- Alternate Names Trystine, Bolivianite, Amethyst-Citrine, Citrine-Amethyst, Golden Amethyst
- Gemstone Groups
Key Separations Ametrine’s appearance is distinctive and otherwise the key quartz indicators will be present (refractive index, birefringence, optic character and optic figure). A bull’s-eye optic figure is determinative for quartz. Might also show Airy’s spiral.
- Comments Stones might be piezoelectric: able to generate electricity produced by mechanical pressure,Pyroelectricity: development of opposite charges at the ends of the axis due to change in temperature and triboluminescent: luminescence produced by friction.
AMETRINE CHARACTERISTIC PHYSICAL PROPERTIES
- Hardness 7
- Streak White
- Specific Gravity 2.64-2.69 Range:0.03/-0.02 Typical:2.66
- Toughness Good
- Inclusions Ametrine is a type II clarity stone. Color zoning in stones is often present in the form of “soap scum”, “tiger stripes” or “zebra stripes”, crystals, negative crystals, liquid inclusions, two-phase inclusions, partially-healed fractures, hematite needles.
- Luster Vitreous
- Stability Good
- Fracture Conchoidal
- Cleavage None
- SKU
- Dimensions (mm)
- 11.800 x 11.300 x 5.800 mm
- Weight (cts)
- 6.470
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Ametrine is a bi-color quartz variety that, as its name suggests, is a unique combination of amethyst and citrine within a single crystal. How the gem forms is still a bit of a mystery, but the differences in color are believed to be the result of the presence of iron in different states of oxidation from natural heating. Combining the golden sunburst of citrine with the violet sunset of amethyst, this naturally colored gem is commercially mined at a single source: the remote Anah mine in Bolivia and is shrouded in fascinating local legends and lore.
- Origin Bolivia
- Treatment None
Feel free to to “make an offer” on our other items :)
We Accept Payments through
- Paypal
- Direct Deposit
- Credit Cards
AMETRINE CLASSIFICATION
- Common Name Ametrine
- Species Quartz
- Variety Ametrine
- Colors Bicolored Combination Of Purple, Yellow
- Alternate Names Trystine, Bolivianite, Amethyst-Citrine, Citrine-Amethyst, Golden Amethyst
- Gemstone Groups
Key Separations Ametrine’s appearance is distinctive and otherwise the key quartz indicators will be present (refractive index, birefringence, optic character and optic figure). A bull’s-eye optic figure is determinative for quartz. Might also show Airy’s spiral.
- Comments Stones might be piezoelectric: able to generate electricity produced by mechanical pressure,Pyroelectricity: development of opposite charges at the ends of the axis due to change in temperature and triboluminescent: luminescence produced by friction.
AMETRINE CHARACTERISTIC PHYSICAL PROPERTIES
- Hardness 7
- Streak White
- Specific Gravity 2.64-2.69 Range:0.03/-0.02 Typical:2.66
- Toughness Good
- Inclusions Ametrine is a type II clarity stone. Color zoning in stones is often present in the form of “soap scum”, “tiger stripes” or “zebra stripes”, crystals, negative crystals, liquid inclusions, two-phase inclusions, partially-healed fractures, hematite needles.
- Luster Vitreous
- Stability Good
- Fracture Conchoidal
- Cleavage None
| Shipping provider | Shipping to Thailand | Shipping to rest of world |
|---|---|---|
| FedEx | $35.00 / 2 days | $35.00 / 4 days |
|
Thailand
FedEx is discounted to $35.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $35.00 on orders with 2 or more items
|
||
| Express Shipping | $55.00 / 2 days | $55.00 / 7 days |
|
Thailand
Express Shipping is discounted to $55.00 on orders with 2 or more items
Rest of the world
Express Shipping is discounted to $55.00 on orders with 2 or more items
|
||
| Registered Shipping | $10.00 / 7 days | $10.00 / 21 days |
|
Thailand
Registered Shipping is discounted to $10.00 on orders with 2 or more items
Rest of the world
Registered Shipping is discounted to $10.00 on orders with 2 or more items
|
||
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NeutralIf my feedback was based only on the quality of the gemstone, then it would definitely be positive. However, since it took 7 weeks to arrive, and there was a bit of difficulty getting responses from Natural Spectra Gems a couple times, I have to go with
-
Positive
THANK YOU. VERY LOVELY. A+++++++++++++++++++SELLER.
-
Positive
Very beautiful stone.
-
Positive
Quick shipment, good quality
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