Guide to Emeralds

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Kinds of Emeralds include the following:

Natural emerald

• Natural emerald has a chemical formula of Be3Al2.SiO6.
• It is mined in Egypt, Austria, and northern Pakistan.
• Some of the famous Natural Emeralds are Chalk Emerald, Duke of Devonshire Emerald, Mackay Emerald, and Gachala Emerald.

• Hydrothermal is a process used to manufacture synthetic emeralds.
• The first known hydrothermal emerald was sold under the name of “Emerita” and “Symeralds.”
• It is usually grown as a thin layer of emerald on top of natural colorless beryl stones.
• The process involves working in acidic conditions to prevent the chromium from precipitating.
• The growth occurs by diffusion-reaction process supported by convection.
• The produced emerald contains water molecules just like beryl minerals.

• Flux-growth is a process used to manufacture synthetic emeralds.
• The synthetic emerald is usually grown on natural colorless beryl seeds.
• The growth occurs at a rate of 1 mm per month.
• A typical seven-month growth produces emerald crystals with a thickness of 7 mm.
• Some flux-growth methods involve the lithium vanadate flux process.
• The produced emerald usually has wispy, vein-like inclusions.

Standard:  Look for synthetic emeralds that meet the strict requirements of the FTC (Federal Trade Commission).  They must have the same optical, physical, and chemical properties as Natural Emeralds.

Inclusions: If you want to get synthetic emeralds that look exactly like natural ones, choose those that were made using the hydrothermal process. This process produces emeralds with water inclusions, which are evident in all Natural Emeralds.

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