Authenticity and the GSB certificate
Every stone gets its proof. What is written on it, and why we put it in the box.
Gemmological stone quality control, Berlin
With opal, you cannot trust your eyes
Every opal tells its own story, yet many pieces on the market are not what they promise. Some sellers stay vague. Others sell synthetic stones as the original.
A polished opal looks like a polished opal. Whether it is one piece or built from several layers, whether the play of color is real or made, you cannot see it.
That is why our team checks every single opal and issues its own GSB certificate: a Liberty Angels quality document that records authenticity, origin and how the stone is built. With us, you hold a checked original.
Structure of the opal
Three constructions, all with genuine play of colour
The difference is in the build, the price and the care. The GSB certificate states how your stone is built. We write it down, instead of hiding it.
Solid opal
100% natural, one single piece
Made of one piece of natural opal, no layers, no treatment. The play of color comes only from microscopic silica spheres that break light like a prism. The most valuable form, and the only one that can take contact with water.
Doublet
Two layers, bonded
A thin layer of real opal on a dark base of potch or obsidian. The dark base strengthens the play of color, the way a black background makes colors glow.
Triplet
Three layers, with a protective cap
On the doublet construction sits a clear quartz cap. It protects the opal layer and gives the surface its dome. The most accessible way into the world of opal.
The most important identifying feature
The glue line shows the build
Look closely and the golden line appears, the one that joins opal and base. That line separates doublet and triplet from solid opal, and it is one of the most important marks in an authenticity check.
We check it under the microscope and record the result on the certificate. If you want to see it yourself, the layers are shown in detail on our construction page.
Without a microscope
What you can see yourself
Verifiable for good
Also filed digitally
Every GSB certificate is tied to your order. In our database you can check, with your name and order number, that your opal was examined and documented by us. Authenticity stays verifiable, even years later.
A later sale or an appraisal is easier, because the certificate can be checked online. Your piece keeps its character and its value, because the proof of authenticity stays available.
If your certificate is ever lost, we issue a new one at any time, free of charge, with no shipping cost.
Declare withdrawal
Please fill out the following form to declare your withdrawal from the contract.
