Opal is a gem-quality form of hydrated amorphous silicon dioxide. Its name is derived from the Sanskrit word for ‘stone’. It is gemologically classed as a mineraloid rather than a mineral, owing to its amorphous form. Opal is considered to be the national gemstone for Australia, owing to the fact that Australia produces roughly 97% of the world’s entire supply of opal gemstones. Opals can be divided into three main subgroups: precious opal, fire opal and common opal (potch).
Round cabs are available from 1mm to 5mm and in any quantity. 
Oval cabs are available from 4X3mm to 6X4mm and in any quantity.Note: custom made sizes, shapes and cuttings are available on request.
Round shapes are available from 4mm to 15mm and in any quantity. Oval shapes are available from 6X4mm to 20X15mm and in any quantity.
Heart shapes are available from 3mm to 15mm and in any quantity. 
Trillion shapes are available from 3mm to 15mm and in any quantity.
Pear shapes are available from 4X3mm to 20X15mm and in any quantity.
Square shapes are available from 2mm to 15mm and in any quantity. 
Octagon shapes are available from 5X3mm to 20X15mm and in any quantity. 
Marquise shapes are available from 4X2mm to 20X10mm and in any quantity.
Baguatte shapes are available from 4X2mm to 14X10mm and in any quantity. Note: custom made sizes, shapes and cuttings are available on request.
