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Peridot is a green gem stone, that is actually gem quality Olivine - a magnesium iron silicate mineral with the general chemical formula - (Mg, Fe)2SiO4.

Olivine is actually a solid solution series with varying iron and magnesium content where:

100% magnesium, 0% iron = forsterite

0% magnesium, 100% iron = fayalite

Peridot contains more magnesium than iron and so is closer in composition to forsterite

The meaning and origin of the word peridot seems to be somewhat confused. Some references state that it is derived from the Arabic word faridat which means precious stone. It is also said that it may be derived from the French word peritot which is used to describe olivine and apparently means unclear. This is thought to relate to the presence of inclusions within the mineral which normally make it appear cloudy

It Is The Birthstone For August

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Related Questions

What about the peridot makes it special?

The Peridot is special for its rarity, and its important symbolic meaning to help the poor and sick, and bring luck and prosperity to those who need it.


Is peridot an intrusive or extrusive igneous rock?

Peridot is olivine, which is a mineral, not a rock. It is found in both intrusive and extrusive rocks.


What is the cleavage or fracture of peridot?

Peridot typically exhibits a conchoidal fracture, meaning it breaks in a smooth, curved manner like glass. It does not have a distinctive cleavage pattern due to its crystalline structure.


Is peridot a type of opal?

No. Peridot is olivine.


What is the August birth stone?

Peridot, the birthstone of August, carries a lime green color and is one of only a few gemstones that exists in only one color.Modern Birthstones: Peridot (kind of yellow green) Traditional Birthstones: Sardonyx, Carnelian.Other than Peridot, Aventurine and Sapphire are also classified as modern birthstones.


What is the difference between peridot and peridot quartz?

Peridot quartz is just the color possibly. Peridot is actually a semi precious stone. Cabochon is a type of cut. As for the Peridot Quartz.....I am not sure if it is actual peridot or a another name game to sell lab-created crap.


Does peridot have cleavage or fracture?

Peridot exhibits a conchoidal fracture, meaning it breaks smoothly like glass rather than along defined planes. It does not possess cleavage, which is the tendency of some minerals to break along specific, flat surfaces. This characteristic contributes to peridot's unique appearance and durability in jewelry.


What is the peridot's luster?

Peridot's luster is vitreous to oily. (:


What is peridot's luster?

Peridot's luster is vitreous to oily. (:


How do you pronounce peridot?

Peridot is pronounced as "PAIR-uh-dot."


What number is peridot hardness?

hardness of peridot 7.0 mohs.


What is August birth stone?

PERIDOT