: Thin slices of opal glued to a dark backing (and sometimes capped with quartz). These offer the look of expensive black opal at a fraction of the cost—often around 1/30th the price of a solid black opal. Check Play-of-Color & Pattern :
: Red is the rarest and most expensive, followed by orange, green, and blue. buy opal earrings online
: Look for distinct patterns like "Harlequin" (broad patches) or "Pinfire" (small flecks). Large, well-defined patterns that shift evenly from all angles are highly prized. Verify Authenticity & Seller Policy : : Thin slices of opal glued to a