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The Spark of Confidence

Glossary

Gem Quality

Diamonds of a beauty and calibre suitable to be used in jewellery. Only approximately 20% of mined diamonds are of gem quality  - 80% are in fact industrial grade diamonds.

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Gemmology

The science, art, and profession of identifying and evaluating of all gemstones, including diamonds.

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Girdle

The outermost edge or rim of a diamond that outlines its shape. It is the circumference or perimeter that appears to divide the crown from the pavilion. A girdle may be faceted, polished, or bruted. The purpose of the girdle is to protect the diamond from damage such as chips.

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Girdle Thickness

The height of the girdle, expressed both in millimetres and as a percentage of the total depth.

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Grading Report

A complete, accurate report describing the specific characteristics of a diamond, issued by a recognised and independent diamond grading laboratory. A diamond grading report lists all the characteristics of a diamond that allows you to determine its current appraisal and fair market value. Also called a Diamond Certificate. A diamond grading report is not an appraisal and does not contain a monetary value. Click here for a guide to the information that a diamond grading report must have.

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Grainer

Term used to describe a diamond weighing approximately 0.25 of a carat. In ancient times, 1.00 carat was equal to about four grains of rice. A “four grainer” would thus be referring to a diamond weighing approximately 1.00 carat (4 x 0.25=1.00).

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Graining

Faint wavy, hazy, oily, or distorted transparent and sometimes shadowlike lines, either inside the diamond or on the surface of a diamond. Graining is caused by irregular growth and crystallization that takes place when the diamond is formed. Also known as “growth lines.”

  

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Green Diamond

A diamond with a natural green body colour. Green must be the predominant colour, but it may be modified by shades of yellow or blue. The colour in natural green diamonds is created by exposure to natural irradiation in the earth that produces structural defects; natural green diamonds are extremely rare. Some green coloured diamonds with sufficient saturation fall into the valuable fancy green colour category of 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?