Emerald is the green to greenish blue variety of beryl, a mineral species that also includes aquamarine as well as beryls in other colours.
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Go onsite to Zambia’s emerald mines with GIA’s field gemmology team.
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Visit gem mining areas in Madagascar, Kenya, Tanzania, Zambia and Mozambique with GIA’s field gemmologists.
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Ruby and sapphire (usually blue, but also in every other colour) have been the most important coloured gemstones for several thousand years. Originating historically in south-east and central Asia, and more recently in eastern Africa, these coloured varieties of the mineral corundum have been much sought as gems because of their rarity, colour and durability. Gem corundum can display asterism and chatoyancy due to the presence of oriented mineral inclusions, and in some cases, a change of colour when viewed under different light sources.
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Chemically pure beryl is colourless, but trace elements give rise to green, blue and pink/red colours.
Read MoreEmerald is the green to greenish blue variety of beryl, a mineral species that also includes aquamarine as well as beryls in other colours.
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Purplish Pink Spinel from Tajikistan: Before and After Cutting
Read MoreA compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewellery manufacturing techniques and industry trends.
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A phenomenon usually seen in Colombian emeralds is found in a specimen from Zambia.
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Colombia’s unique trapiche emeralds exert a fascination for many gemmologists.
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