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Peridot may not have the instant brand recognition of diamonds or rubies, but don't let that fool you. Peridot not only has a fascinating history, but its gorgeous green hue can also compete with any gem under the sun! Peridot is perhaps the only gemstone in the world that only occurs in one color - Olive Green.
- What Is Peridot?
- How Does Peridot Get Its color?
- Does Peridot Make A Good Jewelry Stone?
- Are There Cat's Eye and Star Peridots?
- What Is Chrysolite?
- What Is Peridotite?
- Identifying Characteristics of Peridots
- Is There Synthetic Peridot?
- Peridot Lookalikes
- Do Peridots Receive Enhancements?
Peridots belong to the forsterite-fayalite solid-solution series, which forms part of the olivine group of minerals. Forsterite is the magnesium (Mg)-dominant end, while fayalite is the iron (Fe)-dominant end. The term peridotrefers to green, gem-quality olivines of this series.
As idiochromatic gems, peridots get their characteristic green color from iron, an essential element of their chemical structure. In peridot, ferrous iron (Fe2+) creates green, while ferric iron (Fe3+) creates yellow. Traces of chromium (Cr) in peridots don't cause huebut may make the green color brighter. An iron content of just 12 to 15% in olivi...
Olivines can range in hardness from 6.5 (fayalite) to 7 (forsterite). Thus, peridots can approach quartzgems in hardness. However, they are still sensitive to scratching from household dust (which has a hardness like quartz). Furthermore, they have some susceptibility to stress fractures. Use protective settingsfor any peridot rings. Avoid settings...
Cat's eye and star stone peridots are known but very rare. In cabbed gems, inclusions can create a star with a weak cross or a distinct 4-ray effect.
The modern August birthstone has a long history. The celebrated Isle of St. John (or Zabargad, Egypt) in the Red Sea has produced peridots since the time of Ancient Egypt. This site has also produced one of the most confusing name mixups in gemology. The Ancient Greeks called this island Topazios, which was said to produce a yellow-green gem. This ...
Olivines (those from Earth, not from outer space) form in the Earth's mantle. Peridotite, an igneous rock made primarily of olivine and pyroxene, makes up most of the upper mantle.
Properties of Gem Olivines
Greenish peridots generally have a specific gravity(SG) of 3.3 to 3.4; brownish stones about 3.5.
Birefringence
Peridots have very strong double refraction, which can produce doubling and fuzziness effects. This can help identify them.
Absorption Spectrum
Peridot shows a strong iron spectrumwith three main bands: 1. Strong at 4930 2. Narrow at 4730 3. Broad at 4530 While peridot also shows some vague bands at 6530 and 5290, the set of three evenly spaced bands is distinctive.
Scientists have synthesized both forsterite and peridot olivines using melt techniques. Dr. Kurt Nassau notes that chromium-doped synthetic forsterites have commercial applications for laser research and have also surfaced in jewelry. This material can be distinguished from natural forsterites and peridots due to lower SG and refractive index (RI) ...
While actual lab-created peridots may still have no general commercial availability or economically viable jewelry use, you can find many peridot lookalikes or simulants on the market. In green colors, synthetic corundum and spinel gems, as well as cubic zirconia, may be passed off as peridots. Some natural green gems can be confused with peridots,...
Most peridots don't normally receive treatments. However, some cut peridots may be metal-foiled to improve their stability and color, like faceted glass. The lozenge-shaped peridot in this beautiful early 20th-century pendant has a foil back. Photo courtesy of liveauctioneers.com and Fellows.
Some of the popular peridot jewelry available on Etsy include: peridot jewelry set, peridot jewelry for women, peridot jewelry ring, and even peridot jewelry 14k gold. Do Etsy sellers include shipping on peridot jewelry?
Check out our peridot and gold jewelry selection for the very best in unique or custom, handmade pieces from our dangle & drop earrings shops.
Shimmer and shine in peridot jewelry styles. Shop our selection of peridot rings, necklaces, earrings, and more at Zales.
Genuine Green Peridot Gemstone Ring, 925 Sterling Silver Ring, Peridot Silver Minimalist Ring, Promise Ring Peridot Jewelry, Gift for her. (767) $18.99. FREE shipping.
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