3.11ct Black Crystal Opal

This 3.11ct black crystal opal is an impressive specimen. It features an exquisite dark hue with flashes of brilliant colour and patterns, making it a unique and captivating gem. Its one-of-a-kind beauty is sure to set your jewellery apart.

12.31mm x 9.37mm x 4.4mm

Brightness: 4/5

Colours: Blue, Green