Mexican Cantera Fire Opal
Mexican Fire Opal Loose - Cabochon Cut Cantera Opal
Cantera opal is a type of fire opal that show play of colour are sometimes referred to as jelly opals. Cantera means “quarry,” and such stones come from quarries at Magdalena, Queretaro and possibly other Mexican locations.
Mexican opals are sometimes cut in their host material making it easier for cutting and polishing. This type of Mexican opal is referred to as a Cantera opal. Making to perfect to have made into rings, pendants and other jewellery.
Mohs scale: 5.5 to 6.5 (Hardness) The top of the scale is a 10, which are the hardest gems like diamonds.
20 mm x 15 mm