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Search Results - Gemstones

your search of 'Gemstones' has 109 results.

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Orange & Blue Sapphires

Gemstones
Colour Investigation: Sapphire

Throughout history, sapphire has always been associated with the colour blue. This still rings true today, with many consumers unaware of the other coloured varieties available. STACEY LIM reports. Read more »
Interpretation of colour is subjective

Gemstones
Colour Investigation: Ruby

Desire for ruby today is as great as ever. With fluctuating quality and supply, and a high demand for stones over one carat, this blazing beauty can demand the highest price per carat of any coloured gemstone. Read more »
Image courtesy Greg C Grace | Figure 1. Australian argyle pink diamond | Figure 2. Brilliant cut fancy vivid yelow diamond

Gemstones
Colour Investigation: Diamond

The diamond industry is built on a foundation of colourless gemstones but vivid-colour varieties are also highly valued and steadily increasing in popularity. STACEY LIM reports. Read more »
Images courtesy Greg C Grace

Gemstones
Colour Investigation: Peridot

Forming deep within the Earth’s mantle, peridot is no stranger to heat and pressure. This green mineral may also be of extra-terrestrial origin, transported within meteorites from the depths of the universe, impacting the Earth in rare, cataclysmic events. STACEY LIM reports. Read more »

Gemstones
High-quality gemstone faceting is the way of the future

The commercial realities of gem-cutting means there is little emphasis placed on high-quality gemstone faceting. VICTOR TUZLUKOV discusses why this is detrimental to the industry and its future. Read more »
Spectrolite (Left) Rainbow Moonstone (Right). Image courtesy: Greg C Grace

Gemstones
Colour Investigation: Labradorite

The unexpected flash of colour and light rolling along the surface of a gemstone can be awe-inspiring. STACEY LIM reports that labradorite captures this spectacular effect known, eponymously, as labradorescence. Read more »
Image Courtesy: Greg C Grace

Gemstones
Colour Investigation: Garnet

The spectacular phenomenon of colour change can only be seen in a small handful of gemstones. The garnet group, usually recognised for its rich reds, can supply fine examples of this playful effect. STACEY LIM reports. Read more »
Image courtesy: Greg C Grace

Gemstones
Colour Investigation: Beryl

The beryl family includes some of the world’s most loved gemstones. STACEY LIM reports that varieties of beryl are prized for their hardness, transparency and range of beautiful colours. Read more »
Image courtesy Hamid Bros Gem Merchants

Gemstones
Colour Investigation: Alexandrite

Emerald by day and ruby by night, alexandrite is perhaps the best example of the magical colour-changing variety of gemstones. STACEY LIM reports. Read more »
International Colored Gemstone Association

Gemstones
Packing a colourful gemstone punch

In a difficult climate, coloured gemstones are offering jewellers an opportunity to stand out. EMILY MOBBS investigates current market trends for this colourful sector. Read more »

Gemstones
Colour investigation: Opal

The quality of colour can be dissected into vibrancy, evenness, pattern and, in some cases, uniqueness; however, what on earth causes it? This series is dedicated to exploring the different causes of colour in gemstone minerals. STACEY LIM reports. Read more »
The GIA's new service traces a diamond's origin, and includes an app for consumers

News
New GIA service traces diamond’s origin

The Gemological Institute of America (GIA) has introduced a program that allows retailers to track the origin of select polished diamonds, potentially providing a unique selling opportunity and improved consumer confidence. Read more »


 


Sunday, 27 May, 2018 06:05pm
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