There are a number of ways to verify that your diamond matches the diamond certificate it is purchased with. If you purchased a diamond that is laser inscribed, ask your jeweller to show you the laser inscription under magnification. This way, you will always be able to identify the diamond as your own.
DCLA also performs a verification service, for both DCLA certified diamonds and for diamonds certified by other internationally recognised laboratories. Bring or send your diamond, together with the diamond grading certificate, to the DCLA laboratory and the diamond will be conclusively matched against the certificate. DCLA can then cold laser inscribe the diamond with either the diamond grading certificate number, or with a personalised message.
A complete database is kept of all diamonds certified by the DCLA laboratory. Each diamond that is submitted to the laboratory for grading is issued with a unique, individual DCLA number; this number is used both to track the diamond as it progresses through the laboratory, and also as a reference number for identification once it leaves the laboratory.
A diamond valuation is only done once the diamond has been set in the ring. Inclusions are hidden, colour is obscured, carat weight and measurements have to be estimated. This makes it impossible to determine the exact characteristics (4 C’s) of the diamond and consequently the “valuation” can be significantly different to the actual value. In fact most valuations have the following disclaimer: “Gemstones have not been removed from settings for accurate assessment, all grades and weights are approximate.” Often these insurance valuations are used as selling tools by jewellers; for example, when selling a diamond ring for $10 000 a jeweller may present a valuation for $15 000. The customer will think he is getting a very good deal, however the diamond ring had never ever been sold at that value.
It is strongly advised that you purchase a diamond that has already been certified. Most reputable jewellers will sell diamonds that have already been certified by an independent, recognised laboratory. If you want the DCLA to certify a diamond we will gladly assist you, please give us a call for more information.
Synthetic diamonds or “man-made” diamonds are created in a laboratory using either HPHT (High Pressure High Temperature) or CVD (Chemical Vapour Deposition). The DCLA will only certify natural, untreated diamonds and therefore will not certify synthetic stones.
You can have your certified diamond sealed in a DCLA Certicard ® Seal which will provide a further safeguard against your stone being substituted. The seal has a number of security features including electrostatic security bars, pressure-sensitive transparent adhesive and Cryptoprint® text which becomes visible after opening the seal. It is therefore very difficult to tamper with the seal. This sealing will also protect your diamond against damage and dirt.
Always use a jeweller this is willing to provide you with an independent diamond grading report or diamond certificate; without a diamond grading certificate from an independent diamond grading laboratory, you will not know the true quality of the diamond you purchase.
The DCLA uses the latest equipment and technology to detect and conclusively identify treated diamonds, synthetic diamonds, and fake diamond simulants. All diamonds that are submitted for grading to the DCLA laboratory are screened for treatment and authenticity. Diamonds that require further testing are then examined and tested on advanced equipment to conclusively determine their authenticity.
No, the value is not even close. A single 1.5 carat diamond with the same shape, cut, clarity and colour will be worth many times more then the 1.5 carats of small diamonds. This is mainly because large diamonds are rarer, and much more valuable.
The DCLA uses the latest Photoscribe cold laser technology that allows excellent control during diamond laser inscription without damaging the diamond. The PhotoScribe cold laser is the only laser guaranteed not to damage or alter your diamond by penetrating beyond the surface.