Reference: PRU18F
Product name: Natural Peridot, Shape: Oval, Color: Green, Stone dimensions mm: 7.90x5.90 - 8.00x6.00, Stone carat weight: 1.05 - 1.40, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Pakistan
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Peridot is a common mineral in mafic and ultramafic rocks, often found in lava and in peridotite xenoliths of the mantle, which lava carries to the surface; however, gem-quality peridot occurs in only a fraction of these settings. Peridots can also be found in meteorites.
Peridots can be differentiated by size and composition. A peridot formed as a result of volcanic activity tends to contain higher concentrations of lithium, nickel and zinc than those found in meteorites.
Olivine is an abundant mineral, but gem-quality peridot is rather rare due to its chemical instability on Earth's surface. Olivine is usually found as small grains and tends to exist in a heavily weathered state, unsuitable for decorative use. Large crystals of forsterite, the variety most often used to cut peridot gems, are rare; as a result peridot is considered to be precious.
In the ancient world, mining of peridot, called topazios then, on St. John's Island in the Red Sea began about 300 B.C.
The principal source of peridot olivine today is the San Carlos Apache Indian Reservation in Arizona. It is also mined at another location in Arizona, and in Arkansas, Hawaii, Nevada, and New Mexico at Kilbourne Hole, in the US; and in Australia, Brazil, China, Egypt, Kenya, Mexico, Myanmar (Burma), Norway, Pakistan, Saudi Arabia, South Africa, Sri Lanka, and Tanzania.
Data sheet
Product name: Natural Peridot, Shape: Oval, Color: Green, Stone dimensions mm: 7.90x5.90 - 8.00x6.00, Stone carat weight: 1.05 - 1.40, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Pakistan
Product name: Natural Spinel, Shape: Oval, Color: Dark Purple, Size: 8.60x7.20 mm, Weight: 2.15 carats, Treatment: Untreated, Clarity: No visible inclusions, Origin: Sri Lanka
Stone type: Lapis Lazuli, Shape: Round, Colour: Blue, Stone size mm: 2.40, Weight carat: 0.04, Stone Clarity: Opaque appearance
Product name: Natural Topaz, Shape: Round cabochon, Colour: Swiss Blue, Size: 7.20 mm, Weight: 2.25 carats, Clarity: No visible inclusions, Treatment: Treated, Origin: Brazil
Product name: Natural Peridot, Shape: Round, Color: Light green, Stone size mm: 5.90 - 6.10, Stone Carat Weight: 0.70, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Pakistan
Product name: Natural Zircon, Shape: Oval, Color: Dark Brown, Size: 6.40x5.00 mm, Weight: 1.05 carat, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Sri Lanka
Product name: Natural Topaz, Shape: Cushion, Colour: Light Brown, Stone size mm: 13.70x11.60x9.40, Stone weight carat: 12.30, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Pakistan
Product name: Natural Spinel, Shape: Oval, Color: Light Blue, Size: 7.90x5.70 mm, Weight: 1.10 carats, Clarity: No visible inclusions, Treatment: Untreated, Origin: Sri Lanka
Stone type: Natural Topaz, Shape: Cushion, Colour: Light Brown, Stone size mm: 13.50x10.90x8.60, Weight carat: 10.40, Stone Clarity: Eye clean
Product name: Natural Tourmaline, Shape: Wand, Color: Green, Stone dimensions mm: 15.00x3.90x3.00, Stone Carat Weight: 1.80, Stone clarity: No visible inclusions, Origin: Pakistan
