Peridon (Peridol) [Peridot gemstone, also called green-yellowish olivine. ‘A gem called peridon enclosed in gold.’ xx sols t, (invoice of the Duke of Berry, year 1416.)- viii ‘gemstones of which there were a grenas (garnet), a lopue, an ametiste (amethyst) and a peridol (peridot).’ [invoice of the Duke of Anjou year 1360.] ”
As mentioned before, the Norman French occupied England during this period, and the aristocracy imposed their language upon their English subjects. This greatly influenced the development of the English language: causing Old French words to be assimilated into the Middle English language. However,
Peridot wasn’t the only alias to be appropriated to the green
gemstone from these sources.
Up until the 19th Century A.D., another Greek word was also used to denote
Peridot and gemstones similar in aspect:
Chrysolite. This originally came from the Greek ‘
Khrysolithos’,
‘Khryso’ meaning golden and ‘
Lithos’ meaning stone. It transformed into ‘
Chrysolithus’ in Latin, and ‘
Crisolite’ in Old French, eventually becoming ‘
Chrysolite’ in Middle English.

The French poet Philippe de Thaon wrote the following excerpt in 1112 A.D.: ‘Crisolite ure celeste, qui ourent out vie terrestre.’ Translated the passage reads: ‘
Chrysolite the celestial happiness, which they had with the terrestrial life.’ However, there is no conclusive proof to indicate that he was talking of our
Peridot, as
Chrysolite was also used to describe the majority of all yellow to yellow-green transparent
gemstones including:
Topaz, prehnite, apatite, sapphire, chrysoberyl, beryl, tourmaline, and andradite garnet. By today’s standards such an inaccurate, generic term is disused.

A similar term of equally broad connotations was also appropriated to
Peridot: Olivine. This originated from the Greek ‘
Elaiw’ or ‘
Elai’, transforming to the Latin ‘
Olva’ and eventually to the French ‘Olivine’. In 17th Century France
Olivine was a jeweler’s term for a variety of
Chrysolite, today it is a term used to denote one of the most common mineral types on the Earth’s surface, a magnesium/iron silicate in which the ratio of magnesium and iron vary between the two mineral extremities:
Forsterite (Mg2SiO4) and Fayalite (Fe2SiO4).
Peridot is actually a rare sub-species of the
Olivine group:
Forsterite-Olivine. Forsterite, the mineralogical term used to denote the Olivine species of
Peridot, was named in honor of the German mineralogist J. R. Forster.
It is important to state that the etymological theories on these pages are speculative, and should not be taken as gospel.
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