Ametrin, 10.31ct, exceptional stone!! VVS

Item Information

Dimensions (mm) 16.5 x 12.6 x 8.9mm
Weight (carats) 10.31 carats
No Treatment

Please pay your stones in between five days or contact me. Otherwise i need to cancel the deal.

Ametrine, also known as trystine or by its trade name as bolivianite, is a naturally occurring variety of quartz. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Almost all commercially available ametrine is mined in Bolivia.

The colour of the zones visible within ametrine are due to differing oxidation states of iron within the crystal. The citrine segments have oxidized iron while the amethyst segments are unoxidized. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation. Artificial ametrine is created from natural citrine through beta irradiation (which creates an amethyst portion), or from an amethyst that is turned into citrine through differential heat treatment.

Ametrine in the low price segment may stem from synthetic material. Green-yellow or golden-blue ametrine does not exist naturally. This gem only exists in Bolivia, it comes from the Ricón del Tigre area, from the Anahí mine.

Ametrine is composed of silicon dioxide (SiO2) and it is a tectosilicate, which means has is a silicate framework linked together through shared oxygen atoms.

Legend has it that ametrine was first introduced to Europe by a conquistador's gifts to the Spanish Queen in the 1600s, after he received a mine in Bolivia as a dowry when he married a princess from the native Ayoreos tribe.

Shipping: For special requests such as express delivery please contact me. For lost stones the seller is not liable, therefore an additional Insurance is recommended. Right of return within two weeks after receiving the shipment. Payment via PayPal, Credit Card, or Bank transfer is possible. The shipping I usually use: Austrian Post, FedEx or DPD. Unfortunately from Austria only DHL "express" is possible.

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Pricing & Details

Bid Increment $1
Starting Bid $48
Auction ID 1299576
Watchers 1 watching
Viewed 10 times
Starts 30th Sep 2020 5:53am PDT
Ends 28th Oct 2020 5:53am PDT

Shipping & Insurance

Provider Shipping Transit
Express Shipping $70.00 5 days
FedEx $29.00 4 days
Registered Shipping $18.00 21 days
Standard Shipping - Tracked $16.00 21 days
Standard Shipping - Untracked $15.00 28 days
Shipping Insurance all providers $8.00 (optional)

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