Proportion or Cut is considered the most important
characteristic of a diamond as it has the biggest effect on the light
performance and brilliance. But this is not the only important
characteristic.
At the DCLA Laboratory, Proportion is graded along side Symmetry,
polish and importantly the Transparency. This is why DCLA Diamond
Exchange Four Ex Diamonds are the most sought after for those who want
the finest diamonds available.
To ensure the highest quality, DCLA works with the finest rough diamond producers from South Africa, Antwerp,Israel and India.
Each diamond is then meticulously analysed by our Laboratory diamond
gemologists, who along with sophisticated laboratory equipment analyse
every aspect of the individual stone, including the all important
proportions that will produce the most brilliance.
Proportions
Proportions affect how light travels within the diamond. Diamonds
that are cut too shallow and wide, or too deep and narrow lose light out
the sides or bottom, causing the diamond to lose brilliance. DCLA
selected Diamonds are cut to perfect proportions, allowing the diamond
to reflect the maximum amount of light a diamond can produce.
Symmetry
The alignment of a diamond's facets in relation to each other or
opposing facets affects the diamonds light performance. Facets which are
symmetrical and aligned, reflect light directly back to your eye.
Symmetry grading to DCLA standards ensure its brilliance and fire is
emitted evenly.
Certification
All DCLA Diamond Exchange diamonds are certified by DCLA or GIA
This provides you an authoritative analysis of your diamond. DCLA also
verifies that your diamond meets all the specific quality requirements
and checks the diamond is cold laser inscribed.
Transparency
Transparency, also called pellucidity, is the material property of
allowing light to pass through. In mineralogy, another term for this
property is diaphaneity.
The DCLA Transparency Grade is the degree to which a diamond
transmits light, directly relevant to its ‘cloudiness’ or ‘haziness.’
In other words, it is a comprehensive assessment of light performance based on the quality of the diamond crystal itself.
Laser inscription
Every DCLA Diamond Exchange stone can be registered to the owner