43.02 ct Square Ametrine, 100% Natural Very Rare Single Source Gem from Bolivia
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Ametrine is a geological curiosity that exists in only one significant deposit in the world: the Anahi mine in Bolivia.
This 43.02 cts Ametrine of Yellow / Purple hue from Bolivia was selected for the Skyjems Archive not as an afterthought, but as a deliberate acquisition. It is entirely unheated and untreated — a distinction that places it in the top fraction of the global Ametrine supply and is the single most important value driver in the collector market. Bolivia's Anahi mine is the world's only significant source of ametrine — a geographical monopoly that makes every fine specimen a uniquely traceable artifact.
- Species: Natural Ametrine
- Weight: 43.02 cts
- Dimensions: 21.30x20.80x11.80 mm
- Shape & Cut: Square, Step Cut Crown / Mixed Cut Pavilion
- Color & Saturation: Yellow / Purple
- Clarity & Transparency: Eye Clean
- Treatment: None / Unheated & Untreated
- Origin: Bolivia
- Archive Reference: AT0227
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Commission a Bespoke Heirloom
Built around this gemstone. Explore our Gem First Design process.
Our Commitment
30-Day Private Inspection
Your piece arrives insured and fully authenticated. Live with it for 30 days. If it does not meet your exact expectations, we arrange a seamless full-value return — no questions, no restocking fees.
Fully Insured Worldwide Delivery
Every shipment is fully insured at declared value, packed in tamper-evident security packaging, and tracked door-to-door. US clients receive duty-free delivery with all customs documentation handled by our team.
GIA-Verified Authentication
Every piece is personally authenticated by David Saad, our third-generation GIA-alumni gemologist, before it leaves our care. Certified stones ship with their original laboratory documentation — GIA, AGL, Gübelin, or SSEF.
Lifetime Relationship
Our relationship extends well beyond the transaction. We offer complimentary cleaning and inspection appointments, trade-up considerations on future acquisitions, and direct access to David for gemological questions — for the life of your piece.
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30-Day Private Inspection
Acquiring fine gemstones requires absolute confidence. We invite you to view your piece in your own home for 30 days. If it does not perfectly align with your vision, we will arrange a seamless, full-value return.
A Legacy of Trust
Our reputation is our most valuable asset. We invite you to read our independent Google Reviews to hear directly from the collectors, couples, and families who have commissioned their heirloom pieces from our bench.