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Peridot Gemstones:
peridot is found in a wide range of blue
shades, from light sky blue to deep ocean blue and for the obvious, the
peridot is associated with the oceans of the world. Appropriately named
peridot, it is derived from the Latin words "aqua” meaning water, and
"mare” meaning sea. According to legend, peridot stones were the prized
possession of mermaids; which lead to sailor’s beliefs of ancient times that
peridot brought good luck and held the powers to protect them from the
dangers of the seas. It was common for sailors to wear peridot while at
sea. Other ancient traditions advocate gifting peridot to newly weds, as
insurance of a happy marriage, while others believed peridot gave its
owner joy and wealth.
Typically transparent, Peridot is found in an attractive
range of colors, from brownish and yellowish green to greenish yellow.
Peridot is one of the birthstone for August and is the astrological
birthstone for the sun sign Libra. It is no surprise that this vibrant,
sparkling green gemstone with shimmering rays og gold, is the perfect
complement to a light summertime outfit.
Peridot is also known as, Chrysolith (derived from the Greek word
“goldstone”) and Olivin, because Peridot is the gemstone variety of the
Olivin mineral, it is generally called Peridot, a name derived from the
Greek “peridona”, meaning something like “giving plenty”. Most Peridot
formed well below the earth and was forced up through the crust of the earth
by volcanoes. Significant deposits of Peridot are found in Myanmar (Burma),
Pakistan, and the United States. There are rare incidences of
extraterrestrial Peridot delivered by meteorites. The Peridot found in
meteorites contain iron, nickel traces which adds to the depth of green.
Some of the most beautiful stones come from Myanmar and China. Peridot is
also mined in the state of Arizona, where it has always been popular in
Native Indian jewelry.
Peridot is rich in inclusions and is cut according to its crystal structure,
regularly in classic table and facetted cuts, round, octagonal an oval
shapes. Smaller crystals are cut as calibrated stones, larger ones are
shaped by gemstone designers to fancy unique specimen stones.
Egyptians called this favorite gemstone of Cleopatra the gem of the sun.
Because of its golden glow many cultures associated Peridot with the powers
of the sun. The Peridot that was brought as gifts to Cleopatra were
excavated from a little volcanic island in the Red Sea, about 70 km off the
Egyptian coast, which was rediscovered only around 1900 and has been
completely exploited since. The Romans named Peridot as the evening Emerald.
Many believed that it protected its owner from terrors of the night.
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Peridot Properties |
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Composition |
(Mg,Fe)2SiO4 |
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Refractive Index |
1.654 - 1.690 (+/- .020) |
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Hardness: |
61/2 -
7 Mohs |
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Specific Gravity: |
3.34 (+ 0.14, - 0.07) |
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Typical Cutting Style: |
faceted |
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Optic Character: |
DR, biaxial positive or negative |
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Polish Luster: |
Vitreous |
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Cause of Color: |
Iron |
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Cleavage: |
Rarely seen, imperfect to indistinct in one
direction |
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Typical Size Range: |
1 to 5 ct; faceted stones over 300 ct are
known |
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Public Recognition: |
Well Known |
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Birefringence: |
0.035 to 0.038 |
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Dispersion: . |
.020 |
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Pleochroism: |
Weak yellow-green and green; noticeable only in
dark gemstones |
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Fracture: |
Conchoidal |
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Reaction to Heat |
Uneven or rapid heat may cause fracturing and
breakage |
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Stability to Light: |
Stable |
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Birthstone: |
August |
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Anniversary: |
Year 16th |
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Astrological Stone: |
Leo |
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Cleaning: |
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Ultrasonic |
Risky |
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Steamer |
Never |
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Soapy Warm Water |
Safe |
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