5.12 Carat Natural Untreated Hessonite Cushion IGI Certified

SKU: JRO-G389200178
Hessonite
Cushion

17% OFF

Natural
Unheated / No Heat
IGI Certified

Carat Weight: 5.12 ct
Shape: Cushion
Dimensions: 10.87 x 10.86 x 5.12 mm
Treatment: Unheated / No Heat

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Why This Stone?

Natural Hessonite
No heat / untreated
5.12 carats
Cushion
Transparent
IGI certified
Ships Internationally

5.12 ct natural cushion-cut Hessonite, showing a warm honey-to-cinnamon tone with the soft, syrupy internal texture the variety is known for. Cut to 10.87 x 10.86 x 5.12 mm, the proportions were chosen to balance color and brilliance rather than maximize weight alone. This stone is untreated — no heat, no fillers, exactly as it was mined. With a hardness of 7 to 7.5 on the Mohs scale, comfortable for everyday wear. Certified by IGI.

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Product Details

Specifications for 5.12 Carat Natural Untreated Hessonite – Cushion
SKU	JRO-G389200178
Gemstone Type	Hessonite
Shape	Cushion
Variety	Hessonite
Carat Weight	5.12 ct
Dimensions	10.87 x 10.86 x 5.12 mm
Treatment	Unheated / No Heat
Transparency	Transparent
Certificate	IGI

About This Gemstone

Genuine 5.12 ct Unheated / No Heat Cushion Hessonite, IGI certified. Ethically sourced and ready to ship — Stone #1397.

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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