I am searching through a jeweler's eyeglass for a little diamond that has the BBC logo engraved within it.
Utilizing cutting-edge technology created by Oxford-based Opsydia, the inscription was created.
Only its devices on the market are able to access a diamond's surface and change its atoms.
Less than half a millimetre broad is the size of the logo I'm looking for. I can't see it despite Lewis Fish, Opsydia's head of product, telling me to.
It is quite challenging, he admits. They are purposefully made to be incredibly exquisite, and trained jewellers are who they are intended for.
But why would anyone want to scribble something on a diamond's interior?
He thinks that Opsydia's technology can make diamond identification more accurate than it already is.
A diamond can already be tracked from the time it leaves the mine as a raw stone, through the cutting and polishing process, and on to the retailer.
However, the procedure is far from ideal. Human Rights Watch (HRW) criticised jewellers last year, claiming that many of them were unable to pinpoint the mines from where their diamonds were mined.
This is significant since, in the words of HRW, "violence, abuses, and breaches of labour rights have continued to be substantial problems in the gold and diamond mining industry."
The ability to discern between diamonds that have originated from mines, also known as natural diamonds, and the rising number of diamonds created by machines, also known as lab-grown diamonds, is also becoming increasingly important for diamond dealers.
Lab-grown diamond production technology is constantly developing, and this sector of the industry is expanding quickly.
However, because genuine diamonds are far more valuable than lab-grown stones, it is crucial to have a solid method of differentiating between the two.
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