16.41CT~BOLIVIAN AMETRINE~MASTER CUT~FLAWLESS GEM

Item Information

Dimensions (mm) 16.9 x 16 x 12mm
Weight (carats) 16.41 carats
Colors
No Treatment

Natural Ametrine

  • Grading: IF
  • Design:  Custom
  • Color: Purple, Yellow, Multicolored
  • Origin: Bolivia 
  • Treatment: None at all
  • Hardness: 7
  • Refractive Index: 1.54-1.55
  • Cut: Custom cut by Doug (Award winning/USFG Certified Master Faceter)

*Custom design and certified master- cut, this is a one of a kind and will never be found in a commercial cut gemstone due to the difficulty and precision of cut. This is “Red-Carpet” quality, the kind that is used in the best custom jewelry houses in the world, at a fraction of the price.



Ametrine is a variety of bi-color quartz that has zones of amethyst (purple) and citrine (golden yellow) in contact with one another in a single crystal. This material is known by other less-frequently used names including: “amethyst-citrine,” “trystine,” “bicolor amethyst,” “bi-color quartz,” and “bolivianite.” The bolivianite name is a response to the material being designated as the national gemstone of Bolivia. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Natural Ametrine is a rare gemstone with a finite supply that is produced in commercial quantities at only one mine in the world. The color of the zones visible within ametrine is due to differing oxidation states of iron within the crystal. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.

*CARE (Ametrine)*

Ultrasonic: Usually safe Steamer: Risky Heat: Fair; color change may occur with heat Chemicals that harm: Hydrofluoric acid, ammonium fluoride can damage. Best; Warm, soapy water and then gently clean with a soft brush. Dry with a soft cloth or air dry. *CLARITY CHART*

IF – Internally flawless; free of inclusions VVS – Very, very slight inclusions; microscopic inclusions barely       seen under a loupe with 10x magnification VS – Very Slight inclusions; visible inclusions that can be seen under magnification and sometimes also with the unaided eye. SI – Small inclusions; inclusions that are obvious under magnification and to the unaided eye. I – Heavy or large inclusions obvious to the naked eye I work exclusively with a precision machine when faceting gemstones. This allows extra brilliance and appeals only seen in precision cut gems. Gemstones are cut at their correct refractive index using digital precision, this facilitates making the correct facet angles allowing the maximum amount of light to enter and reflect back up through the table. This allows optimum brilliance according to each gemstone’s individual refractive index. Special care in polishing ensures that the faceted gem is showcased in all its brilliance. The introduction of precision faceting machines has revolutionized the art of gem cutting allowing the gem cutter to unveil the inner beauty of every single gemstone like it has never been done before. The cut of a gem is one of the main values of a gemstone and each gemstone requires special attention in order to unveil its potential beauty. If you’re looking for that extra special stone, I hope you find it here. Sincerely, Doug

“Light reflects off of Jewels, But, “It” comes from above.”

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$656 amelio
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Pricing & Details

Bid Increment $1
Starting Bid $656
Auction ID 905713
Watchers 10 watching
Viewed 1,611 times
Starts 15th Oct 2019 2:20am PDT
Ends 21st Oct 2019 4:02am PDT

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