Why do you need a professional jewellery valuation?
Jeremy Rothon
Your professional jewellery valuation may one day be examined in court. It doesn’t matter if you own a single treasured heirloom or run a jewellery business – a professional jewellery…
Consistent Grading Standards
Jeremy Rothon
The value of a gemstone lies in its quality which is why a consistent grading standards are important. As you know, there are many factors that can impact the value…
Gem Alert – Fake Rough
Jeremy Rothon
It can be all too easy to accidentally buy a fake stone or piece of jewellery that has been marketed as the ‘real thing’, yet with no credible certification. Finely…
Gem Alert – Lab Certificate Fraud
Jeremy Rothon
An authentic lab certificate is an essential part of buying, selling and owning any piece of jewellery or gemstone. I founded The Gem Lab because it’s important to me (and…
Gem Alert – Warning Gem Fraud
Jeremy Rothon
When there’s a gem con doing the rounds, we’re usually the first to know. We find out when you send us gems for certification – and they turn out not…
Gem Alert – All That Glitters
Jeremy Rothon
We value the truth in the trade and believe in sharing our findings with you. The gem alerts are designed to inform you so that you can make wise decisions…
What is the real colour of your gemstone?
Jeremy Rothon
We all know what colours gemstones should be… or at least, we think we do. But what colour is it really? It all depends on the light. The ambient lighting…
Gem Alert – Coated Topaz
Jeremy Rothon
I’ve written to you recently, warning about the trend of coating tanzanite. This beautiful stone is often coated with a substance that enhances its colour (and thus, its value). The…
Jewellery and Gem Valuations
Jeremy Rothon
I started The Gem Lab to provide a unique service to the gem and jewellery industry, which includes gem and jewellery valuations. This is important because we don’t want to…
Valuing Coloured Gemstones
Jeremy Rothon
Valuing Diamonds Diamonds are graded according to an international grading system. This system ties into an accepted pricing guide. And this is why traders prefer lab-graded stones: it’s possible to…
