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Synthetic, Imitation and Treated Gemstones
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£44
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Today buyers cannot be sure whether or not a gemstone is man-made, if its colour has been produced artificially and if it will survive life in a piece of jewellery. This book enables gemstone and jewellery buyers to find out for themselves.A wide range of gem and ornamental materials is described, species by species, opening up the secrets they sometimes conceal, such as when they can be artificially manufactured, when they can be cleverly imitated by other materials, and when their colour has been...
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This well known, man-made, material is produced as a Diamond simulant. White C-Z is so close in appearance to a Diamond that it is very difficult, for an unpractised eye, to distinguish the difference: only its low cost betrays it! Cubic Zirconia is a hard, stable, material that does not deteriorate with age.
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£0.60
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Describes a range of gem and ornamental materials, species by species, opening up the secrets such as when they can be artificially manufactured, when they can be imitated by other materials, and when their colour has been enhanced.
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A silver and enamel birthstone bead set with a synthetic opal gemstone - the birthstone for October.
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Size: about 13mm wide, 18mm long, hole: 1mm; about 22 pcs/strand.
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Size: about 16mm wide, 30mm long, hole: 1mm; about 13 pcs/strand.
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Size: Bead: 6mm wide, 12mm long, hole: 0.8mm, about 76pcs/strand.
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Size: about 8mm in diameter, hole: 0.8mm; about 50pcs/strand, 15".
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Size: about 12mm in diameter, 6mm thick, hole: 0.8mm; about 32pcs/strand, 15".
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Size: about 12~13mm in diameter, 6mm thick, hole: 1mm; about 65pcs/strand, 15.8".
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(UK)
