Peridot — Properties, Meaning, and Uses

Peridot is the gemological variety of olivine, a magnesium and iron nesosilicate with the formula (Mg,Fe)₂SiO₄. Ranging in color from intense green to yellowish-green, with a hardness of 6.5–7 Mohs and an orthorhombic crystal system, it is one of the few gemstones that occurs in only one color: its characteristic green cannot be altered by heat or irradiation treatments. Property Data Mineralogical Name Olivine (peridot variety) Trade Name Peridot Chemical Formula (Mg,Fe)₂SiO₄ Mineral Group Nesosilicates → Olivine group Crystal System Orthorhombic, bipyramidal class Hardness (Mohs) 6.5–7 Density 3.2–3.4 g/cm³ Luster Vitreous to subresinous Fracture Conchoidal Color Yellowish-green to olive green (determined by Fe) Streak White Diaphaneity Transparent to translucent Refractive Index 1.654–1.690 Birefringence 0.035–0.038 (noticeable) Dispersion 0.020 UV Fluorescence Generally inert Main Deposits Pakistan, Burma, Egypt, China, Arizona (USA), Norway What is Peridot? Peridot is the gemological name for the transparent, gem-quality variety of olivine, the most abundant silicate mineral in the Earth's mantle. Olivine forms a continuous isomorphic series between forsterite (Mg₂SiO₄, white or colorless) and fayalite (Fe₂SiO₄, dark green to black); peridot corresponds to the intermediate terms with magnesium dominance. The etymology of the term "peridot" is uncertain: it is postulated to come from the Arabic faridat ("precious gem") or the Greek peridona ("abundant"). In Old English, it was also known as "chrysolite" (from Greek chrysos, "gold", and lithos, "stone"), a name that still appears in some historical and biblical texts. Today "chrysolite" is occasionally used as a synonym, although in modern mineralogy, "olivine" and "peridot" are the preferred terms. It is one of the few minerals that forms in the Earth's mantle and reaches the surface in basaltic lavas, kimberlites, and—spectacularly—in pallasite meteorites, where olivine crystals are embedded in an iron-nickel matrix. Physical and Chemical Properties Composition and Crystal Structure The olivine structure consists of isolated SiO₄ tetrahedra (hence it is a nesosilicate) linked by divalent cations (Mg²⁺ and Fe²⁺) in octahedral sites. The Fe/Mg ratio determines the color: higher iron content results in darker, more saturated hues. High-quality gem peridot has between 10% and 15% iron substitution. Well-formed crystals are short and prismatic, with frequent twinning. Peridot exhibits imperfect cleavage in two directions, which, along with its conchoidal fracture, makes it relatively fragile to impacts compared to its surface hardness. Hardness, Toughness, and Durability With 6.5–7 Mohs, peridot is suitable for jewelry, though not as resistant as quartz or topaz. Its main vulnerability is conchoidal fracture and a tendency to chip if struck on facet edges. For rings for daily wear, closed bezel settings or high prongs that protect the edges are recommended. In pendants and earrings, where the risk of impact is lower, any setting works well. Optical Properties Peridot has high birefringence (0.035–0.038), which produces the characteristic "doubling" effect of back facets visible to the naked eye in gems larger than 3 carats: looking through the table of a faceted gem, the edges of the lower facets appear doubled. This phenomenon is one of the most useful diagnostic features for identifying peridot without instruments. The refractive index (1.654–1.690) is moderate. Dispersion (0.020) is low, so peridot does not produce the fiery flashes of color of diamond or tanzanite: its optical appeal lies in the depth and uniformity of its green, not in spectral brilliance. Peridot Varieties Within the olivine group, peridot does not have distinct varieties with established names in the gemological market. However, value and quality vary considerably depending on the origin: Pakistan Peridot (Supat Valley, Kaghan Valley): the largest and best-colored specimens on the current market. Deep green tones with high saturation. Burmese Peridot (Myanmar, Mogok): historically of high quality, with intense grass-green tones. Lower availability today. Zabargad Peridot (Egypt): the oldest historical source, used since ancient Egypt. Today, production is minimal but historically significant. Arizona Peridot (San Carlos Reservation, USA): lighter, yellowish-green material. The largest volume of small gem market material comes from here. Extraterrestrial Peridot: olivine crystals in pallasite meteorites (such as the Argentine Esquel), of extreme collector interest but without application in commercial jewelry. Emerald is the green gem with which peridot is most often compared, although they are completely different minerals (beryl vs. olivine). Peridot has a more yellowish color and lower hardness. Where is Peridot Found? The most important current gemological deposits are in Pakistan, especially in the Supat Valley (Khyber Pakhtunkhwa) and the Kaghan Valley, where crystals up to several centimeters long are extracted. Burma (Mogok) has historically produced some of the most prized peridots. Egypt has the oldest documented deposit: the island of Zabargad (also called St. John's Island or Snake Island, in the Red Sea) was mined for at least 3,500 years. The United States (San Carlos Apache Reservation, Arizona) is the world's largest producer by volume. China (Hebei) and Norway (Snarum) complete the map of significant sources. Olivine is also abundant in basaltic volcanic rocks worldwide—including Spain, where it appears in lavas from Lanzarote and other Canary Island volcanic areas—but rarely of gem quality. Uses of Peridot In Jewelry and Lapidary Peridot is primarily faceted into oval, round, and cushion cuts that take advantage of its transparency. It is also worked into cabochons with less clean material. In our faceted gem section, you can find peridot in various formats for jewelry. It is a very versatile gem for pendants and earrings, where the intense green stands out especially with gold metals or polished 925 silver. Characteristic inclusions in peridot are "lily pads" or "horsetail" (stress fractures around included chromite crystals), which in medium quality pieces are visible with a loupe but rarely bothersome to the naked eye. Clean specimens from Pakistan are the most prized for faceting. For wire wrap or artisanal setting, peridot cabochons in 925 silver offer a classic combination in natural stone jewelry. In Collecting Well-formed prismatic crystals on volcanic rock matrices are highly valued pieces. Pallasite meteorites with olivine are collection objects of great scientific and aesthetic value: transparent thin sections show mosaics of green olivine against golden metallic iron. Peridot in Cultural and Spiritual Tradition The properties described in this section belong to the cultural tradition of crystal therapy and do not constitute medical advice. History and Ancestral Uses Peridot is one of the oldest gemstones in human history. The Egyptians called it "topaz" (a terminological confusion that lingered for centuries in Europe) and extracted it from Zabargad Island as early as 1500 BC. In Ancient Egypt, it was associated with the sun and Ra: Zabargad Island could not be visited at night, and those who tried were executed, as recounted by Pliny the Elder in his Natural History. In the Bible, the "chrysolite" mentioned in the book of Revelation (Rev 21:20) as one of the foundation stones of the New Jerusalem likely corresponds to peridot. The "topaz" of the Hebrew high priest's breastplate (Exodus 28:17) is also attributed to peridot. In the European Middle Ages, it was known as "Oriental topaz" or "Crusaders' stone," brought to Europe from their expeditions to the Eastern Mediterranean. Meaning in Different Cultures Hawaii has a particular relationship with olivine: the beaches of Papakolea (Big Island) are formed by intense green olivine sand from the erosion of recent volcanic lavas. In Hawaiian tradition, olivine represents the tears of the volcanic goddess Pele. This narrative, although relatively modern in its popularized form, connects peridot with volcanic creation and transformation. In classical Islam, peridot was one of the most prized stones for setting in protective amulets, especially mentioned in medieval texts about precious stones from the Arab world. Attributed Properties in Crystal Therapy The tradition of crystal therapy associates peridot with renewal, mental clarity, and the release of repetitive emotional patterns. It is used as a stone of the heart and solar plexus, at the intersection of self-love and will. It is also linked to the solar cycle and to themes of abundance and recognition of one's own worth. Its connection to the Earth's mantle and meteorites gives it a symbolism in some systems as a bridge between the terrestrial and the cosmic, between deep geological cycles and everyday human experience. Chakras and Associations Correspondence Value Main Chakra Anahata (heart, fourth chakra) Secondary Chakra Manipura (solar plexus, third chakra) Element Earth, Fire Planet Venus, Sun Zodiac Signs Leo, Virgo, Libra (August birthstone) Birthstone August (according to modern classification by the American Gem Trade Association) How to Identify Authentic Peridot Basic Tests The most accessible diagnostic feature of peridot is the doubling of edges visible with a loupe: in a faceted gem larger than 2-3 carats, the edges of the back facets appear doubled when viewed through the table. This effect, caused by high birefringence (0.035–0.038), is difficult to imitate in glass or synthetic crystal. The color of natural peridot is always green with a yellow component, never bluish or grayish. Imitations in green glass usually have cooler or more uniform tones than natural peridot. Common Confusions Green glass: absence of birefringence, bubbles visible with a loupe, lower weight. Without the characteristic doubling of edges. Green tourmaline: greater variation in tones (from almost colorless to very dark green), harder, without the diagnostic birefringence of olivine. Demantoid (green garnet): brighter due to higher dispersion, rarer and more expensive. Different density (3.8 g/cm³). Chrysoberyl: harder (8.5 Mohs), more yellowish or golden colors, without the grass-green hue of peridot. Synthetic peridot: exists on the market and is difficult to distinguish without a refractometer. Reputable sellers declare it. Care and Maintenance Cleaning Peridot can be cleaned with lukewarm water, mild soap, and a soft brush. It should not be subjected to ultrasonic cleaning: its characteristic inclusions (internal fractures, chromite crystals) can spread with vibrations. Sudden temperature changes are also dangerous for the same reason. Avoid acids and harsh cleaning products. Storage and Precautions Store separately from harder gems. Peridot can scratch glass and many metals, but is vulnerable to minerals with hardness 7 or higher. Store in a cloth bag or padded compartment. Avoid prolonged exposure to intense sunlight: although the color is generally stable, some pieces from specific origins may fade with prolonged UV exposure. Do not immerse in salt water. Peridot at Anima Mundi Crystals At Anima Mundi Crystals, we work with peridot mainly from Pakistan and Arizona, selecting pieces for their green saturation and material clarity. You will find peridot in our faceted gems section and in cabochons for artisan jewelry. If you are looking for material for setting in 925 silver, peridot cabochons offer a strong chromatic presence with a stone of great history. Also check out our collections of pendants and earrings where we incorporate peridot in combination with other gems in warm and neutral tones. For the care of your peridot jewelry, visit our maintenance guide. Frequently Asked Questions about Peridot What is the difference between peridot and olivine? Olivine is the mineralogical name for magnesium and iron silicate (Mg,Fe)₂SiO₄, one of the most abundant minerals in the Earth's mantle. Peridot is the gemological name for the transparent, gem-quality variety of olivine. All peridot is olivine, but not all olivine is peridot (most olivine is not gem quality). Why does peridot only come in green? Peridot's green color is intrinsic to its chemical composition: traces of ferrous iron (Fe²⁺) in the olivine structure absorb red and blue wavelengths of the visible spectrum, allowing green to pass through. There are no blue, red, or yellow versions of peridot; the variation in hue (from grass green to olive green) depends on the iron content, but always within the green range. Can peridot be used in rings? Yes, with precautions. Its hardness of 6.5–7 Mohs makes it sufficiently resistant, but its conchoidal fracture makes it vulnerable to impacts on the facet edges. For rings for frequent wear, closed bezel settings or designs that protect the edges are recommended. For special occasions, any setting is appropriate. How is peridot cleaned? Lukewarm water with mild soap and a soft-bristled brush. Do not use ultrasonics (they can propagate internal fractures). Avoid sudden temperature changes. Do not immerse in acids, strong detergents, or salt water. Dry with a soft cloth after each cleaning. Can peridot come from meteorites? Yes. Pallasite meteorites contain olivine (peridot) crystals embedded in an iron-nickel matrix. Thin sections of these meteorites show mosaics of translucent green peridot against golden metal, and are highly valued collector's items. Meteoritic peridot is not used in conventional jewelry due to its rarity and collector value. What does peridot mean according to spiritual tradition? In crystal therapy, it is associated with renewal, clarity, and the release of repetitive emotional patterns. It works with the heart chakra and the solar plexus. Its history in ancient cultures (Egypt, biblical texts, medieval Islam) makes it a gem with one of the longest historical trajectories among jewelry stones. As with all spiritual properties, these belong to cultural tradition and not to mineralogy. Recommended bibliography Gienger, M. (1998). Crystal Power, Crystal Healing. Cassell. Simmons, R. & Ahsian, N. (2005). The Book of Stones. Heaven and Earth Publishing. GIA — Gemological Institute of America. Peridot description. Mindat.org — Olivine/Peridot Pliny the Elder. Naturalis Historia, Book XXXVII (On precious stones).

Peridot — Properties, Meaning, and Uses

Anima Mundi CrystalsJun 18, 2026

Information

Property	Data
Mineralogical Name	Olivine (peridot variety)
Trade Name	Peridot
Chemical Formula	(Mg,Fe)₂SiO₄
Mineral Group	Nesosilicates → Olivine group
Crystal System	Orthorhombic, bipyramidal class
Hardness (Mohs)	6.5–7
Density	3.2–3.4 g/cm³
Luster	Vitreous to subresinous
Fracture	Conchoidal
Color	Yellowish-green to olive green (determined by Fe)
Streak	White
Diaphaneity	Transparent to translucent
Refractive Index	1.654–1.690
Birefringence	0.035–0.038 (noticeable)
Dispersion	0.020
UV Fluorescence	Generally inert
Main Deposits	Pakistan, Burma, Egypt, China, Arizona (USA), Norway