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The quality of gem ammolite is communicated via a letter grade system, from most desirable to least desirable: AA; A+; A; and A−. However, this system is not yet standardized and some vendors may use their own systems. The grade and therefore the value of an ammolite gemstone is determined by the following criteria: [7] The number of primary ...
Korite is the largest commercial producer of ammolite. The company produces natural ammolite gemstones and jewelry. Korite is based in Calgary, Alberta, Canada. The firm's sister company, Canada Fossils Ltd., provides it with ammonites and other fossils. It is a member of the American Gem Trade Association.
Actinolite. Nephrite (var.); Adamite; Aegirine; Afghanite; Agrellite; Algodonite; Alunite; Amblygonite; Analcime; Anatase; Andalusite. Chiastolite; Andesine ...
Gemstone pricing and value are governed by factors and characteristics in the quality of the stone. These characteristics include clarity, rarity, freedom from defects, the beauty of the stone, as well as the demand for such stones. There are different pricing influencers for both colored gemstones, and for diamonds.
Ammolite (organic; also a gemstone) Amosite (asbestiform grunerite) Antozonite (variety of fluorite) Anyolite (metamorphic rock - zoisite, ruby, and hornblende) Aquamarine (light blue variety of beryl) Argentite (high temperature form of acanthite) Asbestos (fibrous serpentine- or amphibole minerals) Auerlite (variety of thorite)
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A snake-stone, also known as a viper's stone, snake's pearl, black stone, serpent-stone, [1] or nagamani is an animal bone or stone [2] used as folk medicine for snake bite in Africa, South America, India and Asia.
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