Transparency, transparency

The Spark of Confidence

What is Transparency?

Transparency, also called pellucidity, is the material property of allowing light to pass through. In mineralogy, another term for this property is diaphaneity.

The DCLA Transparency Grade is the degree to which a diamond transmits light, directly relevant to its ‘cloudiness’ or ‘haziness.’

In other words, it is a comprehensive assessment of light performance based on the quality of the diamond crystal itself.

What affects Transparency?

Diamond transparency can be affected in many ways. Certain types of inclusions, such as clouds and twinning lines, structural phenomena such as graining, and even fluorescence can have an impact on a diamond’s ability to transmit light.

That being said, diamonds of any clarity, fluorescence and cut can in fact have Very Good or Excellent Transparency, making them attractive stones. For example, fluorescence can sometimes give a diamond a ‘milky’ appearance, especially when in sunlight…but this is not always the case. It is quite possible for a fluorescent diamond to have Very Good or even Excellent Transparency.

Diamonds of almost any clarity, fluorescence, and cut can also have Good or Medium Transparency – as said, multiple features contribute to a diamond’s transparency.

The unique DCLA Transparency Grading System now takes all of these features into account to provide an even more comprehensive assessment of your diamond.

  • ExcellentCompletely transparent, no light interruption, no haze or cloud
  • Very GoodTransparent, minimal light interruption, very light haze or cloud, difficult to detect
  • GoodTransparent, some light interruption, slight visible haze or cloud, detectable
  • MediumSemi-Transparent, marked light interruption, moderate haze or cloud, easy to detect
  • PoorSemi-Transparent, very little light passes through, heavy haze or cloud

latest news

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?

Thursday 4 May, 2017

GEM DIAMONDS RECOVERS 80 CARAT ROUGH DIAMOND

Another D colour Type II diamond weighing 80 carats has been recovered.

Wednesday 3 May, 2017

THIS BLUE DIAMOND IS NATURAL—AND ALSO SYNTHETIC

The good news is, from everything we know, all lab-grown diamonds are detectable, and the detection devices are getting better and (somewhat) cheaper.

Tuesday 25 April, 2017

CHRISTIE’S TO OFFER 92CT. PENDANT

A 92.15 carat diamond pendant worth up to $20 million will lead Christie’s Magnificent Jewels auction in Geneva next month.