The Criterion – Connoisseurship in Ruby & Sapphire
What the cognoscenti look for when evaluating ruby and sapphire.
Ruby Evaluation & Buyer’s Guide – A Primer
A Connoisseurs Guide To Rainbow Sapphires
Clarities, Enhancements & More
A Brief Introduction To Colored Gemstone Clarity Grading
Enhancements in Ruby & Sapphire ( Part 1)
Beryllium Treatment in Sapphire
How do I Grade and Value the Different Colors And Sizes Of Blue Sapphire?
Valuing Ruby & Sapphire
In this part of the Learn Section we look at the value ranges for ruby and sapphire. Please make sure you are familiar with all the concepts covered within The Criterion, and Clarities, Enhancements & More sections before using this section¹.
Ruby & Sapphire FAQ’s
How easily can I tell the difference between red spinel and ruby?
What is moissanite and how can I tell the difference between it and diamond?
How Does The Color Change Effect In Gemstones Really Happen?
Can Cheap Opal Be Treated To Look Like Top Quality Opal?
What’s All This Stuff About Tanzanite “Blocks”?
Whats the difference between Ruby and Pink Sapphire?
What Is Diffusion In Sapphires?
Will Somebody Please Explain The Pricing Laws Within The Ruby-Sapphire Family?
How do I Grade and Value the Different Colors And Sizes Of Blue Sapphire?
The History Of Fine Jewelry
And Its Significant Eras & Biographies Of Revered Fine Jewelry Houses
Carl Fabergé – Jeweler To The Tsars
A Brief History Of Tiffany & Co.
Lalique – The First Master Jeweler?