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The Spark of Confidence

Glossary

Ideal Cut

Term often used for a round brilliant cut diamond that is believed to be excellent across the board for proportions and overall make.  There are many different 'ideal cuts', the most famous being the Tolkowsky Ideal Cut. The range for ideal cut diamond parameters can often be very broad, so care must be excercised in labeling a diamond as 'ideal cut'.

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Inclusions

Internal imperfections of a diamond affecting the clarity grade. Diamonds grow deep in the earth under extreme pressure and temperature; under these conditions, it is rare to find a diamond that is internally flawless.

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Indented Natural

The original skin of the rough diamond that remains after polishing and is indented into the body of a diamond, not confined to its surface. An indented natural can affect both the polish grade and the clarity grade of a diamond.

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Independent Laboratory

Diamond grading laboratory that has no financial interest in the actual trade (buying and selling) of diamonds.

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Industrial Grade Diamond

Diamond usually not polished as a gemstone, as it does not meet the minimum quality criteria for grading. Industrial diamonds are very heavily included, lacking the transparencybrilliance and life that a gem quality diamond must exhibit. Industrial diamonds are somtimes used in their rough diamond form in jewellery.  Industrial diamonds are very useful for tools, drills, lasers, abrasives, and other such uses. Only approximately 20% of mined diamonds are of gem quality.

Industrial Grade Diamond, Very Poor Quality

  

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Internal Laser Drilling

Treatment to enhance the apparent clarity of a diamond by reducing the visibility of dark inclusions.  A precise laser beam is focused on a small dark inclusion - the black in the inclusion dissipates from the laser beam itself.  Click here to learn more about laser drilling and clarity enhancement.

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International Diamond Council

International organisation founded by the World Federation of Diamond Bourses (WFDB)and the International Diamond Manufacturers Association (IDMA) to establish standard rules for diamond grading and nomenclature.

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International Diamond Manufacturers Association

International diamond trade association committed to fostering and promoting the highest ideals of honesty and best practice principles throughout the diamond industry worldwide.

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Internationally Recognised Standards

Diamond grading rules and processes that are regulated and recognised by internationally accredited bodies. Examples of these bodies are CIBJO, LMHC, World Federation of Diamond Bourses, and the International Diamond Council.

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Irradiated Diamonds

Treatment to change or artificially enhance the colour of a diamond. Irradiated diamonds are bombarded with a variety of high-energy particles that physically alter their atomic structure, thus changing their colour. Most irradiated diamonds are annealed to further modify their colour. Click here to learn more about irradiated diamonds.

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latest news

Monday 12 June, 2017

GEM DIAMONDS FINDS TWO LARGE ROCKS AT FLAGSHIP MINE IN LESOTHO

Africa focused Gem Diamonds has discovered two diamonds bigger than 100 carats at its Letšeng mine in Lesotho, which should help the company boost revenue and investors confidence.

Tuesday 6 June, 2017

KIMBERLEY DIAMONDS CLOSES ITS LAST MINE

Controversial Australia-based miner Kimberley Diamonds has put its last remaining diamond mine into administration after it failed to secure fresh funding.

Monday 5 June, 2017

DE BEERS GOES TO COURT OVER SOUTH AFRICA EXPORT LEVY

De Beers Consolidated Mines (DBCM) is reportedly appealing to the Pretoria High Court in South Africa to set aside a decision by the South African Minister of Minerals Mosebenzi Zwane requiring DBCM to pay a levy on diamonds exported from South Africa to Botswana for the purpose of aggregation.

Thursday 18 May, 2017

DE BEERS TAPS INTO POLISHED DIAMONDS MARKET WITH FIRST-TIME AUCTION

Anglo American’s De Beers, the world’s largest rough diamond producer by value, has decided to begin selling its own polished diamonds in auctions for the first time in its history.

Wednesday 17 May, 2017

SOTHEBY'S SELLS THE APOLLO AND ARTEMIS DIAMONDS FOR £44.9 MILLION

Wednesday 10 May, 2017

US WOBBLE TAKES SHINE OFF PANDORA SALES

Pandora reported strong growth in the first quarter, but US store closures and sluggish mall traffic dented its performance stateside.

Sunday 7 May, 2017

IMPORTANT ADVICE ON HOW TO SELL YOUR DIAMONDS

If you are you considering selling your diamond, but feel as though you have no idea how or where to begin with the process?