amethyst

A diamond, peridot, tourmaline, garnet, heliodor, aquamarine, cultured pearl and multi-gem necklace, including the Tsar Alexander III amethyst, by Prince Dimitri. Photo: Christie's Images Ltd 2010 The front suspending the cushion-cut Tsar Alexander III amethyst, weighing approximately 42.44 carats, within a circular-cut diamond surround, set at the four corners and cardinal points with old European-cut diamonds and cabochon moonstones, from a sculpted 22k gold Knot of Savoy link, to the graduated series of oval-cut peridot,... [Lire la suite]

14 karat gold and onyx botanical sketch easel, Verdura. photo Sotheby's The sketch with various botanical drawings on ivory with the scientific classification for each plant on the reverse, signed Fulco Pinxit, the gold easel set with an onyx cabochon, signed Verdura; together with an 18 karat gold and lapis lazuli frame, set with lapis lazuli cabochons, containing a sketch of lilacs on paper, the frame signed Schlumberger, Paris. Est. 5,000—7,000 USD. Lot Sold 26,250 USD 18 karat gold, amethyst, emerald and diamond... [Lire la suite]

Paraíba Tourmaline and pink sapphire ring, Michele della Valle. photo Sotheby's The mixed-cut paraíba tourmaline weighing 9.04 carats, framed by round pink sapphires and round paraíba tourmalines, mounted in 18 karat white gold, size 6¾, maker's mark, numbered 10835. Est. 55,000—65,000 USD - Hammer Price with Buyer's Premium:  128,500 USD NOTE: Accompanied by AGL report no. CS 41201 stating Natural Paraíba Tourmaline, origin Brazil, clarity enhancement: none. 'Homage à Dürer', a Tsavorite garnet, amethyst... [Lire la suite]

A coral, amethyst and diamond sautoir, by Van Cleef & Arpels, circa 1970  © 2002-2009 Bonhams 1793 Ltd The chain composed of alternating hammered circular, quatrefoil and fancy links, set with cabochon amethysts and coral, suspending a large detachable brooch/pendant, designed as an alisee patèe cross, similarly set with pear-shaped cabochon amethysts, cabochon coral and brilliant-cut diamonds, signed VCA, numbered, maker's marks, French assay marks, chain length 69.4cm., brooch/pendant length 9.0cm., maker's pouch -... [Lire la suite]

A rare art deco black lacquer bangle, by Cartier, circa 1935 © 2002-2009 Bonhams 1793 Ltd The sprung black lacquer cuff, applied to the front with three detachable diamond floral clips, set throughout with old brilliant, brilliant and single-cut diamonds, diamonds approximately 10.80 carats total, signed Cartier Paris, numbered, French assay marks, inner diameter 5.6cm. Sold for £96,000 Notes: In 1934, Cartier launched its black lacquer cuff bangle with detachable diamond clips. It was striking, sculptural, bold and modern;... [Lire la suite]

"Webb" Carved Amethyst & Enamel Ring & Bracelet Set Webb" Carved Amethyst & Enamel Ring & Bracelet Set 18K (7.5"x26mm, 34x28mm)  - Price : $100,000 "Webb" Pave Diamond Earrings "Webb" Pave Diamond Earrings D=6.50cts app 18K & Plat (28 x 25mm)  - Price: $46,000 "Webb" White Enamel Necklace Set "Webb" White Enamel Necklace Set (2 piece set) 18K YG (36" x 22mm)  - Price: $36,000 "Webb" Coral,... [Lire la suite]

Rare jadeite, agate, amethyst, enamel and diamond bracelet, Mauboussin, 1920s Designed as four carved jadeite plaques, each within a border decorated with blue enamel imitating lapis lazuli, alternating with octagonal carved agate links, between links set with buff-topped amethysts, highlighted with single- and circular-cut diamonds, mounted in platinum and gold, signed Mauboussin and numbered, French assay marks; length approximately 190mm. Accompanied by a certificate of authentication from Mauboussin in Paris. Est.... [Lire la suite]