This week Justin will take you through some obvious and not so obvious differences between natural Australian black opal and treated black opal.
Key factors on how to spot a fake —
Polish — treated opal doesn’t have a high polish, ripples are usually present on the outside of the gem.
Double-Sided — natural black opals can be double-sided but most treated opals are double-sided and are cut with an obvious sharp edge from the dome to the back.
Red on Black — when you see a lot of black in the gem it’s a red flag — most treated opals sit around an N1 or N2 with flecks of color.
Green — the green in treated opals are a really distinctive type of green color and you’ll be able to tell the difference once you see a few treated opals.
Honeycomb Potch — This is a dead giveaway — nothing Australian has a honeycomb potch.
Transparent — When you hold treated opal up to the light it compares to looking through glass, it is very see-through, unlike most natural black opal.
In summary —
All opals are special and have their place in the world — as long as you know exactly what you are purchasing.
Be sure to do your research and make sure you are dealing with a reputable seller of opal or gems.
We hope you got a lot of information from the video and we will strive to continue our education to about all things opal.
Find here a similar video we made almost 10 years ago — https://youtu.be/Wttz0T60wFU
You can find some of our past blog posts on the subject here —
1. How to spot a fake black opal
2. Ebay and fake Lightning Ridge opal