Unlike diamonds, opals have no universal grading system, but their worth is driven by these core elements:
Expect a wide range based on quality. Current market data suggests: How to Buy Opals buy black opal
: Rare patterns like Harlequin (checkerboard) or Flagstone (large blocks) command massive premiums over common "pinfire" or "flash" patterns. 2. 2026 Price Guide Unlike diamonds, opals have no universal grading system,
Buying is widely considered the ultimate gemstone investment, as these "Rolls Royces" of the opal world are the rarest and most valuable variety . Primarily sourced from Lightning Ridge, Australia , they are prized for their dark body tone, which provides a dramatic canvas for vibrant "play-of-color". 💎 1. The Value Factors opals have no universal grading system