American Firoza (Turquoise) 11.10 Carat (12.20 Ratti) — Stone Details
This is a loose American Firoza (natural turquoise) of 11.10 carat (12.20 ratti), oval cabochon, sky-blue and opaque—a large loose stone with a bold face-up spread near 15.8 × 12.8 mm, suited to statement rings or pendants with a secure setting. If you are comparing American firoza stone with Irani (Persian) firoza, choose this listing for American turquoise; Irani stones are listed separately. What we say about USA / American origin matches the paperwork supplied with this stone—your certificate is final if wording differs.
Turquoise is a natural blue-green mineral (copper aluminium phosphate). See Mindat — Turquoise for mineral facts. Our paperwork shows Unheated and Untreated and Natural Turquoise; if your report says something else, follow the report. Hardness about 5–6 on Mohs; refractive index (R.I.) 1.61–1.65 as on the report.
In India it is sold as firoza or firoza stone. The printed lab report ships with your order—keep it for records or resale.
| Specification | Details |
|---|---|
| Weight | 11.10 Carat (12.20 Ratti) |
| Dimensions (L × W × H) | 15.8 × 12.8 × 7 mm |
| Colour | Sky blue |
| Cut / shape | Oval cabochon |
| Transparency | Opaque |
| Chemical composition | Hydrated copper aluminium phosphate (turquoise) |
| Hardness | 5–6 (Mohs) |
| Refractive index (R.I.) | 1.61–1.65 |
| Treatment | Unheated and Untreated (per report) |
| Indian name | Firoza |
| Gem type | Natural turquoise |
| Origin | USA — American firoza / American turquoise, as on lab report or supplier records |
| Report | Gem identification laboratory report included |
Care
Turquoise is soft and can soak up liquids. Avoid long soaking, ultrasonic cleaners, steam, and strong chemicals (cleaners, some cosmetics). Keep it away from harder gems to limit scratches. For Indian-market buying tips—matrix, treatment, price—see our Turquoise (Firoza) buying guide.
Jewellery use
At this size, a sturdy bezel or well-engineered ring or pendant mount is important so the cabochon is fully supported. Sky-blue turquoise pairs well with silver, white gold, and yellow gold.
Each order includes the physical report. Shop more American firoza and Irani firoza on our Turquoise stone (Firoza) page at Ratna Gems.
Traditional use (belief-based)
Some buyers choose firoza for cultural or personal reasons. We do not claim health or astrology results. For birth-chart advice, ask a qualified astrologer.
