1.36 Carats | Natural Red Spinel - Tanzania AIG GemLab

A striking 1.36-carat natural red spinel from Tanzania, displaying a rich combination of deep crimson, saturated red and brighter raspberry-red flashes. Its elongated cushion cut creates broad reflections through the center while the surrounding facets produce concentrated flashes of brighter color as the stone moves through the light.

Accompanied by an American International GemLab (AIG) identification report, the gemstone is documented as natural spinel of Tanzanian origin, with the report stating “No Indication Of Heat.”

Red spinel has an extraordinary place in gemstone history. For centuries, important red spinels were confused with ruby because the two can possess remarkably similar colors. Modern gemology established spinel as its own mineral species, and fine red examples are now collected independently for their color, brilliance and relative rarity.

Tanzania has become an important source of modern spinel, producing material ranging from deep crimson and raspberry tones to exceptionally vivid reds. This specimen retains visible natural internal characteristics, providing an honest representation of the gemstone rather than presenting it as flawless.

Gemstone: Natural Spinel
Weight: 1.36 carats
Origin: Tanzania
Color: Red / Crimson
Shape: Cushion Cut
Measurements: 8.37 × 5.02 × 3.07 mm
Treatment: No Indication of Heat
Hardness: 8.0
Report: American International GemLab (AIG)
Report No.: GEM20260909180171
Report Date: September 9, 2026
Condition: Loose Gemstone
Price: $1,500

With its combination of natural Tanzanian origin, documented no-heat status, substantial 1.36-carat size and rich red coloration, this spinel offers an attractive opportunity for a collector or as the centerpiece of a custom fine-jewelry design.