search
  • Inicie Sesión
    Registrarse
  • Servicio al cliente sólo en inglés

    Número gratuito - EE. UU. & Canadá únicamente:
    1-800-464-1640

    Internacional:
    +66-39303404

  • Cambiar idioma
  • USD

About Peridot Gemstones

Burmese Peridot Gemstone

Peridot (pronounced pair-uh-doe) is the gem variety of olivine. Olivine, which is not itself an official mineral, is composed of two minerals; fayalite and forsterite. Fayalite is the iron rich member with a pure formula of Fe2SiO4. Forsterite is the magnesium rich member with a pure formula of Mg2SiO4. Olivine's formula is written as (Mg, Fe)2SiO4 to show the presence of magnesium and iron. Although iron is the coloring agent for peridot, it is usually closer to forsterite than fayalite in composition. The best-colored peridot has an iron percentage of less than 15% and includes nickel and chromium as trace elements that may also contribute to the color.

Most gemstones of mineral origin are formed in the earth's crust. But there are two exceptions; both peridot and diamond are formed much deeper in the earth, in the region referred to as the mantle. Peridot crystals form in magma from the upper mantle (20 to 55 miles deep) and are brought to the surface by tectonic or volcanic activity where they are found in extrusive igneous rock. Diamonds were formed much deeper in the mantle (around 100 - 150 miles below the surface), at extreme temperatures and pressures.

Fine Peridot from China

Peridot is one of the few gemstones that comes in only one color. The depth of green depends on how much iron is contained in the crystal structure and varies from yellow-green to olive or brownish-green. Peridot is sometimes referred to as "the poor man's emerald." Olivine is a very abundant mineral, but gem-quality peridot is actually rather rare.

Important peridot sources are Burma, Pakistan, China, Vietnam and the United States. The finest quality peridot has traditionally come from Mogok in Burma, though the Pakistani peridot is now highly regarded as well. For many years, the USA was the largest producer of peridot. Deposits in Arizona are the major source of American peridot. Peridot Mesa, located on the San Carlos Apache Indian Reservation east of Globe in Gila County, is the most productive area for peridot in the world. A second Arizona location, from which peridot is recovered, is Buell Park in Apache County, Arizona, about 16 kilometers north of Fort Defiance. However, it is estimated that 80% to 95% of the world's commercial quality peridot comes from the San Carlos Reservation. Peridot is the birthstone for the month of August.

Fine Peridot from Burma

The largest cut peridot weighs 310 carats and is housed at the Smithsonian in Washington, D.C.; a 192.75-carat stone that belonged to the czars is in the Diamond Treasury, Moscow; and a 146-carat peridot is kept in the Geological Museum in London, England. Peridot is a relatively inexpensive gemstone in small sizes, but the value goes up with stones weighing over 5 carats; 10-15 carat stones are very rare and expensive. There is no known treatment to improve the color or clarity of peridot, so peridot is always an untreated gem.

  • Primera publicación: Diciembre-06-2007
  • Última actualización: Enero-23-2019
  • © 2005-2021 Reproducción (texto o gráficos), sin el consentimiento expreso por escrito de GemSelect.com (SETT Compañía Ltda.) es estrictamente prohibida.
Más formas
Piedras Preciosas Populares
  • Zafiro
  • Esmeralda
  • Rubí
  • Aguamarina
  • Circón
  • Ópalo
  • Topacio
  • Turmalina
  • Granate
  • Amatista
  • Citrina
  • Tanzanita
Todas las gemas (139)
A B C D E F G H I J K L M N O P R S T V Z
  • Aguamarina
  • Aguamarina Ojo de Gato
  • Amatista
  • Amatista druzy
  • Amazonita
  • Ametrina
  • Amolita
  • Andalucita
  • Andesina Labradorita
  • Apatita
  • Apatita Ojo de Gato
  • Azurita Druzy
  • Berilo
  • Berilo Dorado
  • Calcedonia
  • Charoita
  • Chrysocolla
  • Cianita
  • Circón
  • Citrina
  • Coral
  • Coral Fósil
  • Cornalina
  • Crisoberilo
  • Crisoprasa
  • Cromodiópsido
  • Cuarzo
  • Cuarzo Fresa
  • Cuarzo Limón Estrella
  • Cuarzo Ojo de Gato
  • Cuarzo Rosa
  • Cuarzo Rosa Estrella
  • Cuarzo Rutilado
  • Cuarzo con marcasita
  • Diamante
  • Diásporo con Cambio de Color
  • Diópsido Estrella
  • Doblete de Ópalo
  • Enstatita
  • Escapolita
  • Escapolita Ojo de Gato
  • Escolecita
  • Esfalerita
  • Esfena
  • Esmeralda
  • Esmitsonita
  • Espectrolita
  • Espinela
  • Fluorita
  • Fluorita con Cambio de Color
  • Fucsita con Rubí
  • Gemas de estrella
  • Gemas de jade
  • Geoda ágata
  • Granate
  • Granate Alamandino
  • Granate Demantoide
  • Granate Espesartina
  • Granate Estrella
  • Granate Grossularita
  • Granate Hesonita
  • Granate Malaya
  • Granate Piropo
  • Granate Rodolita
  • Granate Tsavorita
  • Granate con Cambio de Color
  • Grandidierita
  • Hematita
  • Hemimorfita Druzy
  • Howlita
  • Idocrasa
  • Iolita
  • Jadeíta
  • Jaspe
  • Kornerupina
  • Kunzita
  • Labradorita
  • Lapislázuli
  • Larimar
  • Las Piedras Preciosas con Cambio de Color
  • Madreperla
  • Malaquita
  • Mali Granate
  • Matriz Ojo de Tigre
  • Maw-Sit-Sit
  • Morganita
  • Nuummite
  • Obsidiana
  • Obsidiana Copo de Nieve
  • Ojo de Gato Actinolita
  • Ojo de Halcón
  • Ojo de Tigre
  • Ojo de gato opal
  • Ojos de gato
  • Peridoto
  • Perla
  • Piedra de Luna
  • Piedra de Luna Arco Iris
  • Piedra de Luna Estrella
  • Piedra de Luna Ojo de Gato
  • Piedra de Sangre
  • Piedra del Sol
  • Piedra del Sol Estrella
  • Pietersita
  • Pirita
  • Pirita Arco Iris
  • Prehnite
  • Rodocrosita
  • Rubellita Turmalina
  • Rubí
  • Rubí Estrella
  • Rubí-Zoisita
  • Serafinita
  • Serpentina
  • Silimanita
  • Silimanita Ojo de Gato
  • Sodalita
  • Tanzanita
  • Topacio
  • Topacio Imperial
  • Topacio Místico
  • Turmalina
  • Turquesa
  • Variscita
  • Venturina
  • Zafiro
  • Zafiro Estrella
  • Zafiro con Cambio de Color
  • Ágata
  • Ágata Dendrítica
  • Ágata de Fuego
  • Ónix
  • Ópalo
  • Ópalo Boulder
  • Ópalo Chocolate
  • Ópalo Negro
  • Ópalo de Fuego
  • Ópalo en matriz
  • Ópalo hialita
Principales categorías
  • Nuevas llegadas
  • Lotes de gemas
  • Las Piedras Preciosas Calibradas
  • Piedras preciosas por pieza
  • Gemas de grado superior
  • Pares Emparejados
  • Gemas Corte Cabujón
  • Gemas perforadas, briolettes y cuentas
  • Piedras zodiacales
  • Las Tallas de Piedras Preciosas
  • Gemas elegantes
  • Gemas de estrella
  • Zafiro sin Calefacción
Servicio al cliente sólo en inglés

Número gratuito - EE. UU. & Canadá únicamente:
1-800-464-1640

Internacional:
+66-39303404

Ahorra Dinero
No hay gastos de envío para artículos adicionales
$8.90 envío en todo el mundo

Update Translation
 
Current Value
New Value
GemSelect Gemstones
X Cerrar ventana
Colored Gemstones
X Cerrar ventana
Colored Gemstones
X Cerrar ventana
Colored Gemstones
Tamaño y peso

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart