3.78 ct Black OpalJewelry industry professionals, please contact us for a discounted rate Item Description: One loose, unmounted, solid opal gemstone Species: Natural opal Origin: Australia Mining Area: Lightning Ridge, NSW Weight: 3. 78 ct Measurements: 21. 8x6. 2x3. 2 mm Shape: Rectangular Treatment: None We guarantee this opal gemstone is a genuine, solid, natural, and untreated opal from the mining fields of Australia. The opal has been cut and polished from its

Shape: Free-form

The opals have been cut and polished from their natural state

Shape: Pear

Measurements: 12

Measurements: 30

Shape: Triangle

Shape: Free-form carving

Shape: Elongated oval

Weight: 16

Weight: 41

Weight: 14

Measurements: 29