Australian opal Ring / Cabochon / new- 1.72 g - (1)

Australian Opal Ring / Cabochon / new

Set in 925 sterling silver

Weight: 1.72 g

7.5 mm x 4.6 mm

New and unworn

Ring size:

U 54
UK N
US 6.8
France 14
Inner diameter: 17.2 mm

The opal is a mineral in the mineral class of 'Oxides and Hydroxides'. As an amorphous solid, opal (like glass) has no crystal structure and usually appears as a massive vein filling or nodular formation.

Opals are processed exclusively into gemstones.

The word Opal was borrowed from Latin opalus or Greek ὀπάλλιος opallios for 'precious stone' and presumably goes back to upala from Sanskrit. According to Allan W. Eckert in his work The World of Opals, this term was used to denote various rocks, while the early Hungarians called opal mines opálbánya.

Opals were already regarded as particularly valuable gemstones in antiquity, sometimes even valued higher than diamonds. Pliny the Elder wrote about it: “... it has a fire of its own, finer than the fire in a carbunculus, it possesses the purplish spark of amethyst and the sea-green of emerald and an altogether incredible mixture of light.”

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