30 Nov 2022
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Opsydia technology advances to secure identity of melee diamonds
The UK-based diamond innovator has collaborated with the Natural Diamond Council on the latest phase of its ASSURE Program for Diamond Verification Instruments
By: Diamond World News Service
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Sep 30 2021 11:07AM
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Reference: 25898  

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Melee stone from the ASSURE Sample,  secured with an identifier using Opsydia technology, photographed using a  phone camera through a 10x eye loupe.
Melee stone from the ASSURE Sample, secured with an identifier using Opsydia technology, photographed using a phone camera through a 10x eye loupe.

Leading diamond security specialist, Opsydia, has honed its sub-surface laser technology to such an extent that it can now place permanent identifiers in melee diamonds without affecting their surface polish.

Diamonds that are just 0.5 millimetres in diameter can have an alphanumeric sequence, coded shape or logo placed beneath their surface to create a physical link to a supply chain record or branded jewellery origin.

This is viewed as an important advancement for volume manufacturers, who may be searching for a unique and forward-thinking methodology to secure their supply chain and protect against undisclosed synthetics.

Opsydia Chief Executive Officer, Andrew Rimmer, says: “With this technology, the natural diamond trade has more opportunities to secure the identity of its products and use sub-surface features to create ‘fail safes’ within its supply chain. Similarly, luxury jewellery brands wishing to fight back against counterfeiting may wish to include an identifier in a specific pavé diamond and assure their customers that only pieces with this nano-scale identity feature are legitimate.”

The precise capabilities of the Opsydia System allow for high-resolution lines, approximately ~1um (0.001mm) in width, meaning legible characters can be achieved at much smaller sizes in comparison to industry-standard surface marking systems.

Opsydia has directed this technological advancement towards supporting the trade by collaborating with the Natural Diamond Council (NDC) on the latest phase of its ASSURE Diamond Verification initiative.

The ASSURE Program 2.0, which assesses the relative performance of Diamond Verification Instruments available on the market, utilises an ‘ASSURE Sample’ of melee stones (including individual stones of less than 1mm in size) to test each device on its effectiveness at identifying and/or recognising natural diamonds, laboratory-grown diamonds and diamond simulants.

The same melee stone as above photographed at 50x magnification using a grading microscope. Note the three-character identifier in the centre of the table.

The Opsydia System uses a high-precision, ultrafast laser to place logos, alphanumeric sequences or coded shapes (known as identifiers) beneath the surface of a diamond. This laser is tightly focused only once it passes the surface of a diamond, therefore only creating the identifier at a selected depth without affecting the surface condition or polish. It can be applied beneath the surface of a diamond in a range of locations, such as the table or a specific facet.

By adapting its techniques to suit melee and larger diamonds, Opsydia is introducing the natural diamond sector to a unique methodology for addressing its core challenges, such as enhancing stone security, establishing bold traceability initiatives and protecting against fraud, non-disclosure and other counterfeiting concerns.

The Opsydia System (approx. one metre wide and standard doorway accessible) is based on cutting edge laser technology developed at the University of Oxford. It can place unique identity features in diamonds and is capable of processing 50,000 to 100,000 stones per year in an industrial environment. Encryption techniques ensure that each Opsydia system can only write authorised logos or identifiers preventing counterfeiting and protecting brand integrity.

Opsydia technology is deployable across the globe and can be utilised by natural diamond and laboratory grown diamond specialists.

 

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