Technical Opal Information

Australian Boulder Opal Rough Chart

Australian Boulder Opal Rough Chart

Australian Boulder Opal Rough Chart
  • 3rd Jan 2023
  • 9
  • 2
Conversion Chart for Ring Sizes

Conversion Chart for Ring Sizes

Conversion Chart for Ring Sizes
  • 3rd Jan 2023
  • 7
Ethiopian Opals Grading And Patterns

Ethiopian Opals Grading And Patterns

We created a guide to all of the Ethiopian opals patterns and grading factors to help buyers with selecting the best possible opal for the price. It outlines the key features of this type opal.
  • 10th Jan 2024
  • 43
  • 9
Glossary Of Opal Terms

Glossary Of Opal Terms

When it comes to talking about opals there are some terms that might seem a bit strange. Ratters, Nobbys, and Tailings are all part of the vocabulary of opal.
  • Steve Thomas
  • 29th Mar 2023
  • 6
How Does The Back Of An Opal And Its Cut Determine The Value Of An Opal?

How Does The Back Of An Opal And Its Cut Determine The Value Of An Opal?

One of the most important questions we get asked is how the backing of an Opal affects the value. We will take you through a step by step guide on what to look for.
  • Wayne Sedawie
  • 24th Jan 2024
  • 13
Is Opal a Mineral or Mineraloid? Learn How To Classify Opals!

Is Opal a Mineral or Mineraloid? Learn How To Classify Opals!

Opal is a striking gemstone featuring a beautiful play of color, but is opal a mineral or mineraloid? Learn the differences between the two and how gemologists classify opals!
  • Ross Sedawie
  • 3rd Jan 2023
  • 0
Monarch Opal - A New Man Made Synthetic Opal

Monarch Opal - A New Man Made Synthetic Opal

Monarch Opal or Sterling Opal is a new type of synthetic Opal created by the same person that created the Zachery process for Turquoise. Lean about this Opals unique appearance and detection
  • 4th Sep 2023
  • 12
Opal Brightness and Body Tone Guide

Opal Brightness and Body Tone Guide

The Opal Body Tone Guide was designed and created by the Opal Association of Australia and is meant to be a guide for Black Opal and Boulder Opals.
  • Paul Sedawie
  • 7th Jan 2024
  • 44
  • 6
Opal Patterns - The Ultimate Guide

Opal Patterns - The Ultimate Guide

The Opal has so many patterns that it is impossible to find two Opals that look the same. Check out our guide on all of the patterns that Opal can be found in
  • 3rd Jan 2023
  • 10
  • 1
What is a Black Crystal Opal?

What is a Black Crystal Opal?

A Black Crystal Opal is a unique and beautiful variation of a Black Opal. Black crystal opal is scarce and so unique.
  • 3rd Jan 2023
  • 3
What is a Harlequin Pattern Opal?

What is a Harlequin Pattern Opal?

A Harlequin Opal is the rarest opal in the world. We will explain what is needed in a stone in order for it to be classified as a true Harlequin Opal an we will show some of the examples we have for sale.
  • 3rd Jan 2023
  • 14
  • 1
What Is Play Of Color? The Fiery Flash Of Precious Opals

What Is Play Of Color? The Fiery Flash Of Precious Opals

What is play of color and do all opals display it? Learn about the fiery flash of color seen on precious opals, and the process behind this natural phenomenon!
  • 31st Dec 2023
  • 3
What is Synthetic Opal?

What is Synthetic Opal?

Synthetic Opal is a man made version of natural Opal. It has the exact same physical and chemical properties of natural Opal
  • Ross Sedawie
  • 3rd Jan 2023
  • 4
What is the Difference Between an Opal Solid, Doublet and Triplet?

What is the Difference Between an Opal Solid, Doublet and Triplet?

Have you ever wondered what is the difference between an opal solid, doublet and triplet? Read our guide to learn the key features of each one of these three types of opal.
  • 3rd Jan 2023
  • 1
  • 2