Cacholong, also known as Kalmuck agate, is a form of common opal, although it is often mistaken for agate or chalcedony. A milky white colour with a Mohs...

enveloped in a large towel or rug. Materials: Beloretsk quartz, agate, cacholong, red jasper, petrified wood, gold-plated silver, silver, sapphire and...

example of an opal with an insect inclusion Minerals portal Biogenic silica Cacholong – variety of opalPages displaying wikidata descriptions as a fallback...

are sometimes also referred to as 'foil opals' by jewelry collectors. Cacholong Synthetic gemstones Colored Gemstones: The Antoinette Matlins Buying Guide...