Page 90 - 18 KARATI GOLD&FASHION 222

Gem of the sun
majority of which are formed in the earth’s crust. The two exceptions are peridot and diamond, which form much deeper into the Earth, in the mantle. Peridot is formed in the magma of the upper part of the mantle, at a depth of about 20-55 miles. It is brought to the surface by tectonic or volcanic activity. The diamond, on the other hand, is formed much deeper in the mantle, from 100 to 150 miles below the surface, under extreme pressure and at hot temperatures. Peridot rarely has an extra-terrestrial origin, as it comes from meteorites fallen to the earth. In the past, peridot has often been confused with the more famous emerald, due to the remarkably similar chromatic range and the shortage of effective gemmological identification techniques. Scholars do not even exclude the hypothesis that many of the green stones set in Cleopatra’s numerous gems, described as emeralds, are peridot. Peridot is a gem variety of the olivine mineral. It belongs to the forsterite-fayalite mineral series. Some also refer to peridot as “olivine”, but when it is the gemstone, “peridot” is the correct name. It belongs to the idiochromatic or
In alto: collana formata da una serie di maglie incise in foglia d’oro bianco e giallo 18 Kt, alternate a peridoti taglio a pera incastonati, firmata Buccellati. All’interno della collana e in basso: una serie di gioielli con peridoti cabochon e taglio cuscino sfaccettati, diamanti tondi, oro giallo 18 Kt, firmati Seaman Schepps.
Top: necklace formed by a series of links engraved in 18 Kt white and yellow gold leaf, alternated with pear cut peridots set, signed Buccellati. Inside the necklace and below: a series of faceted cushion cut and cabochon peridot jewels,18 Kt yellow gold, signed Seaman Schepps.
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