The Earth Gem- Peridot August Birthstone

Summer is at its peak and green is the Pantone colour of the year, which means Peridot is the perfect gemstone to be wearing, it is also birthstone for August and the official stone to celebrate 15th wedding anniversaries.

Rich green and yellow tones characterize this vivid gemstone along with its generally clear clarity and double refraction. The ancient Egyptians in particular favoured Peridot and referred to it as the ‘gem of the sun’. The intriguing stone can be found in lava, during shifts in the earths surface stones are brought to the surface from deep in the earths mantle; it has even been found in meteorites!

Peridot: Profile

Colour

A pure grass green is the most valuable colour, however most Peridot is a yellowish-green tone. Myanmar and Pakistan sourced Peridot are often the most intense green.

Cut

Many cuts are used for Peridot, including standard faceted cuts such as round and oval, it is also used in carvings, cabochons and beads. Peridot has a double refraction, which means the facets are accentuated and you see two of each pavillion when looking closely at the stone.

Clarity 

Most Peridot used to fine jewellery standard possess a very high level of clarity, tiny dots may be visable in 10X magnification. Other ‘lilly pad’ inclusions may also be present.

Carat

The gemstone can come in a wide range of sizes therefore smaller carat weights are generally not very expensive, however sizes above 10x8mm increase in value considerably.

Photographed from the GIA Collection for the CIBJO project from the Dr. Eduard J. Gubelin Collection. Collection # 30880, antique cushion cut peridot, 130.60 ct.

Care for your stone

Warm Soapy water is suitable for cleaning Peridot, any acidic cleaners or use of a ultrasonic cleaner should be avoided.

Peridot is stable enough for careful everyday wear, however can fracture or scratch if hit with a hard blow. It has fair to good toughness and is 6.5 to 7 on the MOHS scale.

MOHS Hardness scale, GIA

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