facts that why you love green emerald gemstone
facts that why you love green emerald gemstone BASIC CRYSTALLOGRAPHY All gemstones can be classified as either: AMORPHOUS No orderly internal atomic structure. No naturally-occurring characteristic shape. Products of rapid cooling. Physical properties are constant in all directions. CRYSTALLINE Definite & regular internal atomic structure. Geometrical external forms. Directional properties. Products of slow cooling. Identical in all crystals of a given species. Gemstones can also be: MASSIVE A term used to describe a crystalline substance that does not have a naturally-occurring characteristic shape. (i.e. Rose Quartz) CRYPTO-CRYSTALLINE This type of material has not grown as a single crystal but as an aggregate of small or microscopic crystals randomly orientated within the body of the gem. These gems are usually semi-translucent or opaque and slightly porous. Although all crypto-crystalline gems are massive, it should be noted that not all massive materials...