Learn

The Criterion – Connoisseurship in Ruby & Sapphire

What the cognoscenti look for when evaluating ruby and sapphire.

Ruby Evaluation & Buyer’s Guide – A Primer

Sapphire Buyer’s Guide

Gemstone Forensics

A Connoisseurs Guide To Rainbow Sapphires

Mozambique Ruby

 

 

Unheated Ruby Prices

Discover Value Interactively

The Unheated Ruby Price Calculator, part of our interactive price discovery Gem Market Calculator Series™

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.

 

Unheated Blue Sapphire Prices

Discover Value Interactively

The Unheated Blue Sapphire Price Calculator, part of our interactive price discovery Gem Market Calculator Series™

The History Of Fine Jewelry

And Its Significant Eras & Biographies Of Revered Fine Jewelry Houses

Art Deco Era Jewelry

Art Nouveau

Jewelry in the 1940’s & 50’s

Jewelry in the 1960’s & 70’s

Jewelry in the 1980’s & 90’s

Carl Fabergé – Jeweler To The Tsars

Van Cleef & Arpels

A Brief History Of Tiffany & Co.

Lalique – The First Master Jeweler?

Boucheron

Buccellati

Cartier

Musings & Reflections on other Gemstones

Tanzanite Dreams