Ethiopian Opal 1.5x2.5-4x6mm Graduated Irregular Rondelle - 18 Inch Origin_Argentina a form of silica with

a form of silica with a cryptocrystalline structure that incorporates Moganite along with the Quartz

Opals are hydrated amorphous forms of silica

Rocky Butte Jasper strands are predominantly shades of gray

brown to golden-yellow hydrous potassium iron titanium silicate mineral

Ethiopian Opal 1.5x2.5-4x6mm Graduated Irregular Rondelle - 18 Inch Origin_Argentina a form of silica withEthiopian Opal was first discovered in Ethiopia in 1994, with additional major finds in 2008 and 2013. Beautiful specimens of Precious Opal, Fire Opal and Black Opal with spectacular play of color are now being found in these areas. Ethiopian Opal typically occurs in brown, red or orange body color, yet yellow, white and clear stones are also seen.