Peridot, the volcanic gem, is the best known gem variety of
the mineral olivine, a species of magnesium-iron rich silicate minerals. This
bright yellow-green to green gemstone has caught the fancy of humans for
thousands of years.
Some historians even suspect that at least some of the "emeralds" worn by
Cleopatra were actually peridot.
The Romans called peridot "evening emerald," since its green color did not
darken at night but was still visible by lamplight.
Peridot later was also often used to decorate medieval churches. Large
peridots, close to 200 carats in size, decorate the shrine of the three magi at
the Cologne Cathedral.
Peridot was mined in ancient Egypt on an island called Zeberget. Mining was
done at night because legend said that peridot could not be easily seen during
the day. The island was infested with serpents who made peridot mining a very
dangerous occupation until one Pharaoh finally had them all driven into the
sea.
Much of its recent popularity can be explained by its currently being
recognized as the birthstone for the month of August, and people wear the stone
because it is supposed to bring the wearer success, peace, and good luck. The United States was for many years the largest producer of
peridot. The value of production in 1999 was estimated to be about $1.5
million, according to the USBM. The United States is getting major Competition
from China and Pakistan for the title of world's largest producer.
The earliest recorded production of peridot was in about 70 A.D. from St. Johns
Island in the Red Sea, about 24 miles off the coast of Egypt. Most of the
earliest known peridot gems came from this location and small amounts of
material are still being produced from there today. Later, very large,
fine-quality peridot was produced from deposits in Myanmar (formerly Burma).
These deposits were well known for their 20- to 40-carat cut stones of superb
color and clarity. |
Peridot - Main Characteristics
| Classification |
Mineral |
| Hardness (Mohs Scale) |
Six (6) |
| Molecular formula |
MgFe2SiO4 |
| Composition |
Prizmatic crystals. |
| Crystal Shape |
Cubical. |
| Color/Spectrum |
Pale-Green gamma. |
| Atomic (Crystal )Structure
|
Symmetrical. |
| Index of Refraction |
1.56 - 1.59 |
| Density (Relative) |
2.58 - 2.63 |
| Light interaction |
Vitreous |
| Uses |
Jewelry, ornamental. |
Peridot Jewelry Collection
| BlueStarJewelry is pleased to present
Peridot Jewelry in classic and modern styles: emerald rings, earrings,
necklaces and pendants. |
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