13.75 ct Brown Opal - Freeform

This 13.75-carat opal is shaped as a freeform measuring 22.5 x 20.2 x 7.8 mm, with a brown body color, sourced from Ethiopia.

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.