21.12 Carat Natural Untreated Amethyst Cushion IGI Certified

SKU: JRO-G953207118
Amethyst
Cushion

17% OFF

Natural
Unheated / No Heat
IGI Certified

Carat Weight: 21.12 ct
Shape: Cushion
Dimensions: 17.18 x 17.39 x 10.78 mm
Treatment: Unheated / No Heat

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Why This Stone?

Natural Amethyst
No heat / untreated
21.12 carats
Cushion
Transparent
IGI certified
Ships Internationally

A genuine 21.12 ct cushion-cut Amethyst showing an even, rich purple that stays vivid under most lighting conditions. This stone is untreated — no heat, no fillers, exactly as it was mined. Cut to 17.18 x 17.39 x 10.78 mm, the stone measures out at a size well suited to a range of jewelry styles. Independently graded by IGI. Every stone here is sold loose and unmounted.

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Product Details

Specifications for 21.12 Carat Natural Untreated Amethyst – Cushion
SKU	JRO-G953207118
Gemstone Type	Amethyst
Shape	Cushion
Variety	Amethyst
Carat Weight	21.12 ct
Dimensions	17.18 x 17.39 x 10.78 mm
Treatment	Unheated / No Heat
Transparency	Transparent
Certificate	IGI

About This Gemstone

Genuine 21.12 ct Unheated / No Heat Cushion Amethyst, IGI certified. Ethically sourced and ready to ship — Stone #2143.

Certification

IGI Certified Independently graded before dispatch
Ships With Its Certificate The physical report travels with the stone

Shipping Information

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Understanding Carat Weight

See The Size On Your Hand

Approximate gemstone size on a U.S. size 6 finger

0.07 ct 33.10 ct

Carat (ct.) is the standard unit used to weigh natural gemstones, including the certified sapphires, rubies, emeralds, and other loose gemstones in our collection, and one gram equals 5 carats. Every gemstone listed on Jamsora shows its exact carat weight alongside its independent lab certificate, so you always know precisely what you're buying.

Matched pairs: when a listing is sold as two stones together, the carat weight shown is their combined total, not the weight of each individual stone.

Carat weight alone doesn't fully describe how large a gemstone will look once set, since two stones of equal weight can appear different sizes depending on their cut and proportions. For a more reliable sense of a stone's visual size, check its millimeter dimensions (length × width × depth), listed on every product page alongside its carat weight and certificate details.

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