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in 1981 by the International Commission of Colored Gemstones (CIBJO) (http://members.home.net/jaybee7/ammon/index.html) 6. HOW IS AMMOLITE GRADED?

April 26, 2017ammon colored Commission gemstones http International

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in 1981 by the International Commission of Colored Gemstones (CIBJO) (http://members.home.net/jaybee7/ammon/index.html) 6. HOW IS AMMOLITE GRADED?

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* AA – highest grade displaying three or more brilliant sharp colours; also considered to be a collection grade – found most often in one of a kind designer pieces * A – One or more distinct colours or play of colours * B – colours are less distinct and may show directional colour (http://www.ammolite.com/faq.htm)