Famous and Influential English Jeweler Edwin Streeter on Sapphires. He led a consortium against Baron Rodthschild for the rights of the Burma Ruby mines.
More on Sapphire. We will add some more themes pertaining to sapphires here. Please bear with us as this is a labour of love, and very very time consuming.
Modern Jeweler has an excellent 4-page review article on Padparadscha Sapphire.
Pala Gems has an amazing article written by Dick Hughes on what constitutes a Sapphire what a Ruby and how colors can confuse you.
A review article of the life of gemologist Robert Crowningshield , the one who wrote the famous 1983 Gem and Gemology Article about Padparadscha Sapphire, and later the 1989 article on the Hope Diamond.