Crystal Opal (Test Stone D)

Available

Weight 5.1 ct
Dimensions 13 × 11 × 4 mm
Origin Lightning Ridge, NSW, Australia
Body tone N7–N8
Brightness B2–B3
Pattern Patchwork / faint broad flash
Shape Oval cabochon
Colours Green, blue, yellow

A soft-toned crystal opal displaying gentle flashes of green, blue, and occasional yellow across a translucent body. The colour appears in scattered patches across the surface and becomes more apparent as the stone is moved under light. The stone has a rounded oval cabochon cut with a smooth dome that enhances the subtle colour movement within the crystal body.