: This is the #1 value driver. Look for vivid, multi-coloured flashes (especially red, which is the rarest) that are visible from all angles.
Buying an opal is like purchasing a piece of a rainbow. Unlike traditional faceted gems, opals are valued for their —a shimmering, multi-coloured fire caused by light diffracting off microscopic silica spheres. 1. Know the Primary Types buy opal stone
: Graded from N1 (black) to N9 (white). Generally, the darker the base, the more valuable the stone. : This is the #1 value driver
: Transparent or semi-transparent stones where the play-of-colour appears to dance within the body of the gem. multi-coloured flashes (especially red