Welcome to theDiamond Certification Laboratoryof Australia

The Spark of Confidence

The DCLA Difference

The Diamond Certification Laboratory of Australia (DCLA) is one of the world’s foremost independent diamond grading and certification laboratories, providing independent and guaranteed diamond grading certificates, or diamond grading reports, for natural diamonds. 

DCLA is Australia's premier diamond grading laboratory, and the only laboratory grading diamonds to the IDC rules. The IDC rules are the internationally recognised and accepted rules for diamond grading and diamond certification as set out by the WFDB, IDMA and Cibjo.

The DCLA Diamond Grading Laboratory Certificate sets the standard for technical ability in certification of diamonds. The DCLA remains the only internationally recognised diamond certification laboratory in Australia, grading diamonds in accordance with International Diamond Council (IDC) and World Jewellery Confederation (CIBJO) rules for grading polished diamonds.

Protecting Diamond Buyers

The principle mission of the DCLA is to protect diamond consumers, and consumer confidence, when buying diamonds. A fundamental element of this confidence is providing accuracy, consistency and transparency in diamond grading.

In a relentless pursuit of consumer protection, DCLA is the only diamond grading and certification laboratory, both in Australia and worldwide, to provide a 100% consumer guarantee that a diamond certified by the DCLA laboratory is an accurately graded natural diamond.

The Diamond Certification laboratory of Australia is equipped with the most advanced diamond technology and equipment in Australia. All diamonds submitted to the DCLA laboratory are individually identified and tested to International Diamond Council standards, ensuring that the diamond has not been treated or enhanced in any way, and are of natural origin. 

The DCLA Diamond Grading Certificate assures the owner that the diamond is free of all known diamond treatments and diamond enhancements. The DCLA Certificate confirms that the diamond is a natural diamond and not a man-made synthetic diamond when they sell diamonds to consumers. DCLA state of the art cold laser inscription system permanently links the diamond to the DCLA Diamond Grading Certificate, providing added confidence without altering or damaging the diamond in any way.

Independent & Accurate Diamond Assessment

DCLA Independence means that the DCLA Diamond Grading and Certification Laboratory receives no grants or funding from the diamond or jewellery trade, it is completely self funded and independent.

DCLA & The International Diamond Council

The International Diamond Council (IDC) is the governing diamond body established by the World Federation of Diamond Bourses (WFDB) and the International Diamond Manufacturers Association (IDMA). Together, these two organisations are the world’s highest authorities in diamonds.

DCLA is the only International Diamond Council (IDC) laboratory and the only CIBJO Diamond Grading laboratory for Australia, and holds the only official registered National Diamond Masterset for Australia, the diamond C2Au set.

In 1975, the WFDB and the IDMA, appointed a Joint Committee to create an international standard for grading diamonds, covering rules for diamond grading, working methods and nomenclature. A comprehensive system of rules and methods was built up, combining a wealth of practical diamond knowledge and experience of professional diamond people with scientific facts and figures.

The Committee later changed its name to the International Diamond Council (IDC). In May 1978 the "International Rules For Grading Polished Diamonds" were unanimously approved at the 19th Congress of the World Federation of Diamond Bourses and International Diamond Manufacturers Association. All the major diamonds laboratories have since adopted the system. DCLA is proud to offer a Diamond Certificate with such pedigree. 

Trusted and Respected

DCLA is the most respected and trusted name in diamonds protecting the diamond buyer in Australia. Most importantly DCLA protects you the diamond jewellery or investment diamond consumer.

Before you buy loose unset diamonds, consult the laboratory for independently certified diamond advice. If you are in the process of selling diamonds, be sure to contact DCLA for their advice on how to sell a diamond.

latest news

Monday 24 November, 2014

OPEN LETTER REGARDING OVER GRADING CERTIFICATION FROM THE WFDB

Colleagues and friends,

Monday 24 November, 2014

BLUE DIAMOND RECORD PRICE

A blue diamond has set a new record price of $US32.6 million at Sotheby’s auction in New York.

The magnificent blue diamond broke the world record for any diamond of its colour, and set the new record for the price per carat for diamond of any colour.

Tuesday 11 November, 2014

RAPAPORT CALLS FOR END TO OVER GRADING DIAMONDS

Martin Rapaport has released a comprehensive editorial entitled “Honest Grading” that discloses the systematic over grading of over one hundred thousand diamonds, valued at more than a billion dollars.

Friday 7 November, 2014

ZIMBABWE REMOVAL OF TAX ON LOCALLY POLISHED DIAMONDS TO BE CONSIDERED

Minister of Mines Walter Chidhakwa said that Zimbabwe is considering repealing 15 percent tax royalties on locally polished diamonds. This is likely be announced in the 2015 budget set for later this month.

The change is in order to attract investment in the diamond production sector.

Thursday 6 November, 2014

SYNTHETIC OR LAB GROWN DIAMONDS

The question is how many synthetic or Laboratory grown Diamonds are there in the market.

The Gem and Jewellery Export Promotion Council estimated current laboratory created or synthetic diamond production at 350,000 carats per year.

Tuesday 4 November, 2014

GIA SUSPENDS DIAMOND DUPLICATE REPORTS AND SEALING SERVICES

The Gemmological Institute of America (GIA) has suspended duplicate reports diamond and diamond sealing services at all locations.

The action is being taking this action after receiving a sealed diamond for verification that did not match the data label in the sealing packet.

Thursday 30 October, 2014

1.21 CT ARGYLE CARDINAL

Rio Tinto mine in Western Australia sold a 1.21 ct red diamond for a record price, the miner won't disclose the price of the radiant cut rare red diamond, but said the total price for Argyle pink diamonds has tripled over the past decade.

Named the Argyle Cardinal, the diamond is one of 13 red diamonds larger than one carat, and one of 54 pink and red diamonds sold at the latest international tender.