0.85 ct Red Sapphire - Trillion

At 0.85 carats, this sapphire from Tanzania carries its red color through a trillion cut, measuring 6.1 x 5.3 x 3.3 mm.

Sapphire is the gem form of corundum, second only to diamond in hardness among the classic gemstones, which is why it wears so well in jewelry worn daily. Tanzania's deposits at Songea and Tunduru produce sapphire in an unusually wide range of colors. It carries a beryllium diffusion treatment, a modern heat-and-diffusion process, disclosed plainly here as on every listing.

No two of these line up the same way on color, cut, and origin at once, which is what makes choosing this one feel deliberate. Hand-selected and filmed by Caveman Gems in good light, shown as honestly as a screen allows.