Information....
Welcome to Cato Jewellery.
Information for natural stone:
Agate – No gemstone is more creatively striped by Nature than agate. Each individual
agate forms by filling a cavity in host rock. It is often found as a round nodule, with concentric bands like the rings of a tree trunk. The bands sometimes look like eyes, fanciful scallops, or even a landscape with trees.
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Amethyst – Its colour is as unique as it is seductive, though in fact this gemstone of all gemstones is said to protect its wearer against seduction. The amethyst is
extravagance in violet. It was also esteemed as a stone of friendship.
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Onyx – In fine Jewellery, the backdrop is often supplied by onyx, a black chalcedony
quartz with a fine texture. Some onyx also displays white bands or ribbons against a
black background. If the layers are even, this type of onyx can be carved into cameos. It was often used as the perfect foil for carved rock crystal or the ‘drop
dead red' of rubies in art deco designs.
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Quartz – Throughout history, quartz has been the common chameleon of gemstones,
standing in for more expensive gemstones ranging from diamond to jade. But the incredible variety of quartz is now beginning to be appreciated in its own right.
Despite the popularity of quartz gems like amethyst, citrine, ametrine, rose quartz, onyx, agates, chrysoprase, rutilated quartz and other varieties, many people in the
jewellery industry take quartz for granted because of its affordable price.
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Rose quartz – The pale pink color of quartz, which can range from transparent to
translucent, is known as rose quartz.
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Smoky quartz – Smoky quartz is a brown transparent quartz that is sometimes used for unusual faceted cuts.
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Tiger's eye – Tiger's eye quartz contains brown iron which produces its golden yellow color. Cabochon cut stones of this variety show the chatoyancy (small ray of
light on the surface) that resembles the feline eye of a tiger. The most important deposit is in South Africa, though tiger’s eye is also found in Western Australia,
Burma (Myanmar), India and California.
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Rock crystal – The transparent, colourless variety of quartz is still known as rock crystal. The best rock crystal has the clarity and shimmer of water. Many stunning art
deco jewellery designs featured the black and white quartz combination of rock crystal and onyx. Colourless quartz crystals have also become popular in jewellery due to the popularity of legends about their powers. Many people believe that
wearing quartz crystals benefits their health and spiritual well-being.
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Rutilated quartz – Rutilated quartz is transparent rock crystal with golden needles of rutile arrayed in patterns inside it. Each pattern is different and some are breathtakingly beautiful. The inclusions are sometimes called Venus hair.
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Tourmalinated quartz – Tourmalinated quartz is transparent rock crystal with black or dark green tourmaline crystals.
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Chalcedonies – Chalcedonies quartz that is formed not of one single crystal but a number of finely grained microcrystals is known as chalcedony.
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Pearls – Pearls are organic gems, created when an oyster covers a foreign object
with beautiful layers of nacre. Most cultured pearls are produced in Japan. In the
warmer waters of the South Pacific, larger oysters produce South Sea cultured pearls and Tahitian black cultured pearls, which are larger in size. Freshwater pearls are
cultured in mussels, mostly in China.
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Mother of pearl – Mother of pearl is the common name for iridescent narcre, a blend
of minerals that are secreted by oysters and other mollusks and deposited inside their
shells, coating and protecting their bodies from parasites and foreign objects.
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Abalone Shell – Abalone Shell have a low and open spiral structure, and are characterized by several respiratory holes in a row near the shell's outer edge. The innermost layer of the shell is composed of nacre or mother-of-pearl, which in many species is highly iridescent, giving rise to a range of strong and changeable colors which make them attractive to humans as a decorative object.
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Rhodium Plating - Precious Metals can be Rhodium Plated to provide protection for sterling silver and white gold jewelry by coating them to help prevent tarnish and surface scratches.
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