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CARAT: 3.60




All gems from The Vault are shipped in an exclusive, lab specimen gem box and luxury Miško packaging as a keepsake.  

Opal Info

Mineral: Hydrated Silica

Colour: All Colours

Mohs Hardness: 5 to 6.5

Birthstone: October

Metaphysical; Positivity, Purification

Opal is the product of seasonal rains that drenched dry ground in regions such as Australia’s semi-desert “outback.” The showers soaked deep into ancient underground rock, carrying dissolved silica (a compound of silicon and oxygen) downward.

During dry periods, much of the water evaporated, leaving solid deposits of silica in the cracks and between the layers of underground sedimentary rock. The silica deposits formed opal.  

Opal is known for its unique display of flashing rainbow colours called play-of-colour. There are two broad classes of opal: precious and common. Precious opal displays play-of-colour, common opal does not.

Information Source: www.gia.edu

All stones are sourced by Ele who is GIA certified in Diamond, Coloured Gem and Pearl Grading. She sources from reputable Australian suppliers. 

If you cannot find the exact gem you are looking for, please send us an enquiry so we can source to your specifications



Once you purchase your gem you can choose to have it sent to you, sent to someone else as a gift, book in for a custom design jewellery appointment or keep it safe in The Vault for future projects. Please indicate this in the notes at check out.