Jewel__A_Celebration_of_Earth_s_Treasures
TIMUR RUBY 079 O f the Royal Crown Jewels of Britain, there is one exceptional gem that is not what it seems, an impostor that p ...
080 OXIDES Spinel G emstone spinel is a magnesium aluminium oxide, although the name is also given to a group of metal oxides, a ...
SPINEL 081 Purple spinel ring | The vivid colour of the brilliant-cut oval purple spinel in this gold ring is emphasized by the ...
Catherine the Great's spinel Catherine II of Russia’s “ruby” | c.14th century | Weight: 398.72 carats | Uniform colour and excel ...
083 1900 Peter Carl Fabergé makes a miniature replica of the Imperial Crown and Regalia CATHERINE THE GREAT’S SPINEL C atherine ...
Chrysoberyl A lthough crystals of chrysoberyl are not uncommon, the gemstone variety alexandrite is one of the rarest and most e ...
Honey-yellow cat’s eyes | The 11 stones set in this cross pendant are honey-yellow; along with greenish yellow, honey-yellow is ...
H ematite is an iron oxide and a relatively abundant mineral. Its name comes from the Greek word for “blood” and although it can ...
W hen a mineralogist or gemologist hears of the discovery of a new and previously unknown gemstone, his or her thoughts go to a ...
088 OXIDES C assiterite, a major source of tin, takes its name from kassiteros, the Greek word for the element. The vast majorit ...
CASSITERITE–CUPRITE 089 T he mineral cuprite is named from the Latin cuprum, meaning “copper”, and it is sometimes known as ruby ...
090 MAHARAJA’S PATIALA NECKLACE Patiala necklace | 962.25 carats total (diamonds) | Diamonds, rubies, platinum 090-091_STO_Mahar ...
MAHARAJA’S PATIALA NECKLACE 091 T he Patiala necklace was a spectacular, five-tiered Art-Deco diamond necklace, which incorporat ...
092 INDIAN JEWELS Turban ornament Called a jigha, this 18th- century gold, elephant-shaped ornament is set with rubies, diamonds ...
INDIAN JEWELS 093 Peacock brooch This gold brooch from c.1905 is set with diamonds and enamelled for colour. Turban jewel Made o ...
A rguably, rutile is more important as a mineral that imparts desirable characteristics to other stones than it is as a gem in i ...
W hile its scientific name comes from the Greek word diaspora, meaning “scattering”, and refers to the way diaspore crackles und ...
Fluorite R epresenting one of the widest colour ranges of any mineral, fluorite’s hues tend to be vibrant, with violet, green, a ...
Cut Settings Interpenetrating crystals | These three striking orange fluorite crystals show a cubic structure, and demonstrate a ...
Calcite alabaster | Carved | Ancient Egyptians used calcite for items such as this canopic stopper from Tutankhamun’s tomb. Calc ...
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