2.86ct Cushion Cut Fire Opal 11.7x8.3mm

Fire Opal is an unusual variety of opal gemstone from Mexico, with colours ranging from yellow to orange and orange-red. Depending on the origin of the stone it might be very fragile which makes it more suitable for jewellery such as necklaces, brooches and earrings that are less likely to be knocked. Opal is the birthstone for October. Mohs Scale of Hardness: 5.5 - 6.5 Sources: The most famous source of fire opals is the state of Querétaro in Mexico.;Stone Size (mm): 11.7x8.3x5.8mm;Carat Weight (ct): 2.86