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16/03/2020
• Susan Hartwig
Chrysoprase is the green variant, and most valuable form, of chalcedony. Its name comes to us from the Greek language, with chrysos being the word for gold and prasinon for green.
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25/11/2015
• Megan Austin
The GAA’s Australian gemstone series continues with chrysoprase, a gemstone that is said to bring good fortune and prosperity to those who wear it. MEGAN AUSTIN reports.
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19/09/2014
• Megan Austin
The French-named “oeil de chat” or “eye of the cat” is a powerful protective talisman said to ward off evil spirits and even improve night vision. Megan Austin explores this popular and unusual gemstone.
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10/12/2012
The minerals and rocks known collectively as the ornamental gemstones
are grouped together because they normally lack transparency. They owe
their attraction to the colour, texture or pattern they possess. Often,
it can even be a mix of these qualities.
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28/09/2011
New from Made in Earth is this unusual pendant from the Australian Chrysoprase range.
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29/04/2011
• Lorna Goodyer
CIBJO provides definitive guidelines on gem nomenclature, yet misnomers are still rife. Lorna Goodyer talks to gemmology expert Ronnie Bauer to find the top offenders.
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07/10/2010
• Katherine Kovacs
With an array of gemstone treatments in
use, retailers need to realise that treatment disclosure is more important than
ever. KATHERINE KOVACS reports.
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07/10/2010
• Katherine Kovacs
Rubies and sapphires should be cut to retain as much weight as possible,
while still aiming to retain brilliance and a pleasant shape. KATHERINE
KOVACS reports.
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12/09/2009
So well-reputed is the sapphire’s radiant blue colour that a giant sapphire upon which the Earth reputedly rested was believed to have given its reflection to the sky.
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12/09/2009
For thousands of years, ruby has been considered one of the most valuable gemstones. According to Judaeo-Christians, the ruby was the most precious of all 12 stones created by God.
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12/09/2009
Peridot is a gem-quality form of the mineral olivine, a name given to a mineral series with the two end members being iron-rich fayalite and magnesium-rich forsterite.
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12/09/2009
Pearls are the most romantic of gemstones, perhaps because of the ancient legend surrounding their first appearance. Myth has it that the first pearls were made when Venus, the Goddess of Love, came out of the sea shaking herself dry. The water droplets that propelled off her body reputedly hardened into pearls and fell back into the sea.
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12/09/2009
• Staff Journalist
Australia is the world leader in opal production and produces 95 per cent of the precious gemstone. As such, opal is regarded Australia’s national gemstone.
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12/09/2009
Natural citrine is the most valuable form of quartz, and extremely rare. It occurs when amethyst formations are close to natural heat sources in the Earth's crust.
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