Jewel__A_Celebration_of_Earth_s_Treasures
GARNET 259 Garnet △ Round, brilliant-cut almandine garnet G arnets are generally thought of as red, but they can also be orange, ...
260 SILICATES Grossular garnet | Grossular garnets are found in a variety of colours. This example, cut in a mixed-cut cushion, ...
GARNET 261 Hessonite garnet | Faceted in a round, mixed cut, this hessonite variety of grossular is characterised by an unusuall ...
262 SILICATES Settings Antique earrings | Made c.1890, these feature pendaloque-cut hessonite garnets suspended below cushion-cu ...
GARNET 263 Belle-Epoque pendant brooch | This brooch, dating from around 1910, features a yellow sapphire surrounded by green de ...
264 STAFFORDSHIRE HOARD Staffordshire hoard | c.6th century CE | More than 5kg (11lb) of gold, 1.4kg (3lb) of silver, and 3,500 ...
STAFFORDSHIRE HOARD 265 O ne summer’s day in July 2009, metal detectorist Terry Herbert set out across the Staffordshire country ...
266 FIRE AND BRILLIANCE Fire and brilliance T he term “fire” is used to describe the flashes of light that make a gemstone spark ...
267 Ruby RI 1.76–1.78 The best ruby material has excellent brilliance, as well as its striking red colouring. Jadeite RI 1.65–1. ...
268 SILICATES Zircon S ome zircon material is 4.4 billion years old, making it the oldest-known mineral on Earth. It is a colour ...
Natural state | Some zircons do not go through heat treatment. This beautiful emerald-cut stone has been kept in its natural red ...
270 BLACK ORLOV DIAMOND Portrait of Princess Leonilla Bariatinskaia, 1843 | Owner of the Black Orlov diamond in the early 20th c ...
BLACK ORLOV DIAMOND 271 T he Black Orlov diamond, also known as the Eye of Brahma, is famous for its distinctive colour and noto ...
272 SILICATES Topaz O nce, it was believed that all yellow gems were topaz, and that all topaz was yellow – however, neither sta ...
Cut Settings Intricate facets Enhanced colour Shallow crown with deep pavillion Pavillion facets reflect through table Necklace ...
274 SILICATES C rystals of andalusite are pleochroic, meaning they appear to be different colours when viewed from different ang ...
ANDALUSITE–TITANITE 275 F ormerly known as sphene, (the Greek for “wedge”), titanite is a common mineral in many igneous rocks a ...
276 SILICATES Cat’s-eye cabochon | Cut | Sillimanite’s own fibrous nature sometimes yields a cat’s-eye effect when cut en caboch ...
SILLIMANITE–DUMORTIERITE 277 Tumbled gem | Colour variety | Even when tumble-polished, this dumortierite stone is valuable for i ...
278 FABERGÉ EASTER EGGS Rose Trellis Egg | 1907 | 77 x 59cm (3 x 2¼ in) | Gold, enamel, diamonds Rose-cut diamonds form a trelli ...
«
9
10
11
12
13
14
15
16
17
18
»
Free download pdf