DCLA prides itself on maintaining a truly state-of-the-art diamond laboratory. Technology is a crucial part of DCLA’s diamond grading and certification capabilities.
DCLA is a full-service diamond grading and testing laboratory, with the most innovative and up-to-date equipment available to accurately identify and assess each diamond.
Each and every diamond is screened for all known treatments, tested to ensure that it is a natural and not man-made diamond, and graded in accordance with International Diamond Council (IDC) rules.
Independence & Quality Control
To ensure a fully objective, independent assessment of your diamond, our diamond graders are protected from potential outside influences. How?
Immediately after a diamond is received, it is placed into a DCLA parcel paper (a “briefca”) and assigned a unique identification number - all reference to the submitting customer is removed. This way, grades cannot be inadvertently influenced by associating a diamond with a particular customer.
In addition, multiple diamond graders work independently on every diamond - no grader can be influenced by the grades of another. Thus, they cannot be influenced by anyone else’s opinion. A minimum of three professionals must independently agree for a diamond’s grades to be finalised by the control grader and forwarded to certificate printing.
In this way, we maintain the integrity of our diamond grading process and are confident in offering our Diamond Grading Guarantee.
DCLA Diamond Grading Process
DCLA has a fully standardised grading process, ensuring that each and every diamond that comes through the laboratory is thoroughly tested for authenticity and graded consistently and accurately according to International Diamond Council (IDC) rules.
Every diamond is:
- Weighed on a high-precision certified weight scale for exact, accurate weight
- Measured with specialised computer technology that calculates precise dimensions and proportions
- Screened for all known treatments and tested to ensure that it is natural and not man-made
- Colour and fluorescence graded against a set of registered master diamonds, under carefully controlled lighting conditions
- Clarity-graded under appropriate magnification
- Plotted for identification purposes under binocular microscopic magnification – a drawing of inclusions is present on every Diamond Certificate
- Cut-graded for proportions, polish, and symmetry
- Transparency graded to assess crystal quality
The diamond trading floor that gives all diamond buyers direct access to DCLA guaranteed diamonds from Australian diamond dealers.
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.
Thursday 20 April, 2017
GRAFF UNVEILS 105-CARAT D-FLAWLESS DIAMOND
Graff Diamonds has unveiled the 105.07 carat D flawless pear shaped diamond, it has named the Graff Vendôme after its new retail outlet at Place Vendôme in Paris.
Monday 10 April, 2017
LETSENG MINE YIELDS 114CT. DIAMOND
Gem Diamonds has found a 114-carat rough diamond at its Letšeng mine in Lesotho, the miner reported Friday.
Tuesday 4 April, 2017
SOTHEBY'S SELLS 59.6 CARAT PINK FOR $94.2 MILLION AUD
Steinmetz Diamonds owned by Israeli billionaire Benny Steinmetz, spent two years cutting and polishing the Rough diamond. Which was mined by De Beers in Botswana, Southern Africa.
Thursday 30 March, 2017
DE BEERS, LUK FOOK TO CO-BRAND GRADING REPORTS
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.