6.70 ct White Opal - Pear

At 6.7 carats, this opal from Ethiopia carries its white color through a pear cut, measuring 18.8 x 12.9 x 7.7 mm.

Opal is hydrated silica that can break white light into a play of living color, a fire no two stones repeat; it holds up to a fifth of its weight in water, which is why it glows in a way nothing crystalline does. It is wholly untreated, its color finished by geology rather than by any furnace or enhancement.

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.