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
The diamond trading floor that gives all diamond buyers direct access to DCLA guaranteed diamonds from Australian diamond dealers.
Tuesday 21 March, 2017
59.6 CARAT VIVID PINK DIAMOND
Sotheby's plans to auction the famous "Pink Star" diamond an internally flawless, fancy vivid pink stone at its sale in Hong Kong on April 4.
Wednesday 8 March, 2017
GIA FINDS SIGNIFICANT UNDISCLOSED SYNTHETICS
The Gemological Institute of America (GIA) recently uncovered an unusually large number of undisclosed synthetic diamonds mixed in with natural melee diamonds, the lab confirmed with Rapaport News on Monday.
Tuesday 21 February, 2017
DE BEERS PROFIT JUMPS AS DIAMOND MARKET STABILISES
Profit more than doubled for De Beers last year as trading conditions in the diamond-manufacturing sector improved and inventory levels stabilized.
Wednesday 14 December, 2016
DCLA DIAMONDS HAS LAUNCHED
Buying a diamond can be a difficult process.
Thursday 17 November, 2016
PINK DIAMOND SELLS FOR $18M AT CHRISTIEâ€™S GENEVA
Christie’s a pink diamond at its Magnificent Jewels auction in Geneva on Tuesday at $2 million per carat.
Wednesday 9 November, 2016
BAIN CAPITAL AND BOW STREET TO ACQUIRED BLUE NILE
In a surprise announcement, online jeweller Blue Nile has entered into an agreement to be acquired by an investor group managed by Bain Capital Private Equity and Bow Street LLC.
Thursday 3 November, 2016
GRAFF SHOWCASES THE GRAFF VENUS
The 118.78 carat type IIa diamond with no fluorescence and an excellent polish and symmetry. Is a record for a heart shape.