Our Services

DCLA offers an unparalleled level of service and many of your questions may be answered below. For more information about any of our services, we invite you to have a conversation with one of our gemmologists at info@dcladiamondexchange.com.au or call us on 1300 413 425.


We advise and determine your preferences, we give you access to thousands of diamonds, we will help find, verify the quality, negotiate and secure the best diamond at the lowest price.


If you have found the diamond you love, we will verify the quality, negotiate and secure at the best price.

DCLA Diamond Hotline

The DCLA Trustline is a free telephone hotline service that provides direct access to one of our DCLA laboratory team members for answers to your diamond questions.

Our diamond experts are happy to help with any and all inquiries, whether your questions are about a specific diamond, diamonds in general, the diamond certification process, or any other diamond-based issues you need assistance with.

If you are a consumer needing help with a diamond purchase, or perhaps have questions about a diamond you already have, calling the Trustline may help you assemble the diamond knowledge you need to feel confident with your precious purchase.

The Trustline is also open to members of the diamond and jewellery trade, acting as a support center for your queries. Feel confident, feel secure – phone the Trustline on 1300 413 425.

  • Monday to Friday
  • Hours: 9.30am to 4.30pm

Diamond Certification

The DCLA Diamond Certificate is a comprehensive diamond grading report, providing all the information necessary to make an educated diamond purchase.

The DCLA Diamond Certificate guarantees the authenticity of diamonds, and rules out the possibility of a diamond being synthetic or an imitation.

The Diamond Certificate also contains a complete description of the diamond including: a unique ID number, carat weightcolour gradeclarity gradeshape, measurements, proportionsproportion gradetransparency gradepolish gradesymmetry gradefluorescencehue and other remarks or characteristics which determine the quality of the diamond.

DCLA also provides an Online Diamond Grading Report Check, which is your way to verify the authenticity of information for your diamond, should it be required for an insurance appraisal, or to replace a lost or damaged Diamond Certificate.

Cold Laser Inscription

Laser inscription is the use of a very fine, precise laser beam to write a grading report number or customised personal message on the girdle (outside perimeter) of a diamond. The laser inscription is totally invisible to the naked eye and can only be seen with a magnifying loupe. It does not change the colour or clarity grade of a diamond and is considered permanent as it can only be removed by a professional diamond cutter. The DCLA uses the latest cold laser technology that allows excellent control during inscription without damaging the diamond (unlike a hot laser). Laser inscription will ensure that the diamond set in the ring is the same as the one described in the grading report. At a later stage if you decide to remake or polish your ring the inscription will ensure that your diamond has not been swapped.

Diamond Verification

DCLA can verify your diamond against the diamond grading certificate you purchase it with. We will confirm that the diamond matches the grading certificate, whether it is a DCLA Diamond Certificate, or a certificate issued by another internationally recognised laboratory*. We will also check that the diamond is unaltered or damaged in any way.

DCLA can verify both loose diamonds and most diamonds mounted in jewellery. Please note, in some cases we may need to request a diamond be removed from its setting in order to perform a conclusive verification.

Colour Authentication

The origin of colour in fancy coloured diamonds is of paramount importance to its value. A diamond will either be of natural colour origin as created by nature, or else it has been treated and enhanced by man.

DCLA authenticates all fancy coloured diamonds as natural prior to certification.

DCLA will not issue Diamond Grading Reports for colour treated diamonds.

A preliminary colour authentication service is available upon request.

Certain “white” diamonds may be enhanced to improve their colour as well. All diamonds that come into the DCLA laboratory are screened for enhancements, and referred for further testing if they do not pass the initial screening. DCLA will only issue a Diamond Grading Certificate for diamonds of natural colour origin.

All diamonds that come into the DCLA laboratory are screened to ensure that they are natural and not man-made. Diamonds that do not pass the initial screening are referred for further testing.

DCLA will not issue Diamond Grading Reports for synthetic diamonds.

A preliminary synthetic diamond identification service is available upon request.