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How do I know that the diamond has been certified by an independent,
recognised laboratory?
Go to www.independentlycertifieddiamonds.com to see if a laboratory is independent and recognised.
Why would
I want my diamond certified by the DCLA?
The DCLA is the only laboratory in Australia endorsed by CIBJO and the IDC (International Diamond Council.)
Anybody with a DCLA certificate can contact the
laboratory to ensure their diamond matches the certificate as a complete
database is kept of all diamonds certified.
I want to get a diamond certified
before I buy it, what should I do?
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.
I have a "valuation" is this not the same
as a certificate?
No. A valuation is only done once the stone
has been set in the ring. Impurities are hidden, colour is obscured
and weight has to be estimated. This makes it impossible to determine
the exact characteristics ("4
C's") of the diamond. Another worrying development is the introduction
of new and more sophisticated synthetic diamonds that can only
be detected in a sophisticated laboratory. A valuation should
only be prepared AFTER the diamond has been certified
If I buy a certified
diamond, how do I know that the diamond in my ring is the one
described in the certificate?
A sure fire method of ensuring this
is to laser inscribe the certificate number or a personalised
message on the girdle (outside perimeter) of the diamond. Alternatively
you can bring your ring into the laboratory and we can verify
it for you.
Can laser inscription damage my diamond?
The DCLA uses cold laser technology,
which is guaranteed not to damage the diamond. Beware of stones
that have been lasered using a hot laser as this could damage
the diamond.
What are “synthetic” diamonds?
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. The
DCLA has acquired the only DTC DiamondView machine in Australia. This
machine was specifically developed by De Beers’s research laboratories
to detect synthetic diamond.
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