[Jewelry making - Article 00628] - [Orchid] Gem Bits - Peridot

[Gemcal]

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    A couple of thousands years BCE, on a full moon night down at the
    red sea, sailors landed on a small Island of the Serpents. Under the
    bright moonlight they saw glowing crystals in the volcanic earth. At
    first light those crystals turn green glitters in the sand. This is
    how humanity discovered Zabargad. 

    The Egyptian royalty in the capital city of Thebes fell quickly for
    the mysterious gem. In Naturalis Historia, Pliny tells of the first
    specimen presented to queen Berenice. (Theban queen of Lower Egypt,
    about 300 BCE.). She was not the only one. Historians even suspect
    that at least some of the "emeralds" worn by Cleopatra were actually
    Peridot. According to Agatharchides in his De Mare Erthraeo,
    Egyptian kings ordered the discoverers to collect gems and deliver
    them to the royal gem cutters for polishing. Apart from fashion,
    Peridot was considered a symbol of the sun. Soon enough the ancient
    Jews picked on this trend as well, named it =93Pitdah=94 and used it i=
n
    the fabled Breastplates of Aaron described in the Bible (Exodus 28,
    15-30). The breastplate was a ceremonial religious garment set with
    twelve gemstones that represented the twelve tribes of Israel and
    corresponded with the twelve signs of the zodiac and the twelve
    months of the year. Aaron, Berenice and  Cleopatra are all but gone,
    but The largest cut peridot ,weighs 310 carats is on display in the
    Smithsonian, was found on  Serpent Isle, later known as St. John
    Island. 

    During the Ottoman Empire (1300-1918) Turkish sultans amassed the
    world=92s largest collection. They were competing with the Crusaders,
    returning home from their holy journeys with large Peridots as part
    of the loot. Fine gems from this era remain today in a number of
    european sanctuaries including the Treasury of the Three Magi in
    Cologne and the Vatican. The precious stones and jewelry collection
    in the Tower of London also contains large Peridot gems. 

    The source of the name Peridot is not very clear. It could be
    derived from the Greek "peridona", meaning "giving plenty", or from
    the Arabic word Faridat, although the current name in Arabic is
    Zabargad. To add up to confusion the old Farsi name Zamroot means
    emerald which is Izmargad in ancient Hebrew. Later the stone was
    known as Topazion. Probably around the 18th century, the French were
    the first to call this yellowish-green stone Peridote, although the
    English have similar claim, It was probably, regarding their history,
    more of French name. 

    Peridot belongs to the forsterite-fayalite (most of the gem variety
    is predominantly foresterite, named after the German naturalist,
    Johnn Forester.) mineral series which is part of the Olivine group.
    It is one of the "idiochromatic" gems, meaning its color comes from
    the basic chemical composition of the mineral itself, not from minor
    impurities, and therefore will only be found in shades of green. Its
    chemical formula is given by: (Mg,Fe)2SiO4. 

    Peridot is found in many corners of the world and beyond, that is
    from meteorites. In Russia, there are some cut Peridots that came
    out of a meteorite which fell in 1749 in east Siberia. The most
    unusual olive green gem that comes from meteorites called
    Pallasites. Moldavite is found in the Czech Republic and believed to
    have arrived from space in a meteor about 14.8 million years ago.
    Because this stone contains crystals of Olivine and has a similar
    color it is often confused with Peridot. Some of these
    extraterrestrial gems are very beautiful though and have been
    faceted and set into jewelry. 

    Because Peridot is the created during volcanic action, occasionally,
    those green crystals are found on the black sands of Hawaii. The
    United States was for many years the largest producer of this green
    material, and the value of production in 1993 was estimated to be
    about $1.5 million. Peridot Mesa, located on the San Carlos Apache
    Indian Reservation east of Globe in Gila County, is the most
    productive locality for Peridot in the world. Gem-quality Peridot
    can be found in deposits at three different locations in New Mexico.
    The deposits are in the Buell Park area in McKinley County in the
    northwestern part of the state and in Kilbourne Hole and Potrillo
    Mar depression. 

    Very large, super fine-quality Peridot is produced from deposits in
    Mogok area in Burma. These deposits were well known for their 20- to
    40-carat cut stones of superb color and clarity, but since the
    "socialist" government came to power, supply dwindled and Burmese
    Peridot became all but rare collectors=92 item. 

    In the early 1990s, the rough mountainsides of Nanga Parbat,
    stretching far west of the Himalayas, start producing fine crystals
    in a deep and breathtakingly beautiful green. Unique stones of over
    100 carats were found. Soon enough these stones have been termed
    "Cashmere-Peridot". 

    Since the late 90=92s and early 2000, the bread and butter Peridot is
    being mined, cut and sold out of China. Although on the yellowish
    side and mostly in the 1 to 3 carats size range, with china=92s
    untapped labor reserves and aggressive business tactics, Chinese
    Peridot  has an excellent price point. It is clearly taking over the
    commercial slice in the global Peridot pie. 

    The ancient Romans were quite fond of the gemstone and coveted the
    brilliant green sparkle, which does not change either in artificial
    light. They already named the stone "Evening Emerald". Today, the
    airy, slightly golden bright green of Peridot could not escape the
    attention of contemporary designers in the jewelry and fashion
    industries. Its fine pistachio green or olive green goes perfectly
    with many summer collections. No wonder that Peridot is assigned to
    the summer month of August. 

    If you are still in doubt you should consider the reputation Peridot
    has at the New Age circles: Peridot protects against nervousness;
    helps alleviate spiritual fear; aids in healing hurt feelings &
    bruised egos; incurs strength & physical vitality; aligns subtle
    bodies; amplifies other vibrational energies & positive emotional
    outlook; helps liver & adrenal function. If you are married do not
    forget that Peridot is the anniversary gemstone for the 16th year of
    marriage. And above all it is supposed to bring the wearer success,
    peace, good luck, and most importantly, helps dreams become a
    reality. 


Hemi Englisher
http://www.gemcal.com
The Source for Natural Spinels

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