Black Opal Loose Gemstone, Multicolor Fire, Mix Shape, 10-20mm, October Birthstone 5+ Carats

Most opals are cut as smooth cabochons, so a faceted black opal is a rare and eye-catching choice. Each stone is precisely faceted to throw flashes of green, blue, red, orange, and purple against a deep, dark body. The facets add a sparkle you won’t find in a cabochon, and the color shifts with every tilt. S P E C I F I C A T I O N S Gemstone: Black opal Cut: Faceted Size range: 10-20 mm Shapes: Mix (Oval, round, and pear, marquise, heart etc.) Colors: Multicolor flash Origin: Australia Treatment: Natural Sold: Per lot 5 carats, 10 carats, 20 carats ADDITIONAL INFO 100% Natural Gemstones with no treatment. Photo are representative; purchases are filled by carat weight Natural stones always have minor defects and inclusions These are undrilled gemstones