April 16, 2007

• 19 Smithsonian Collection

April 13, 2007

• 18 Royalty diamonds

April 10, 2007

• 16 Certified diamond

April 7, 2007

• 11 Fire

April 4, 2007

• Bonded Diamonds

April 1, 2007

• All About the Clarity of Diamonds

March 29, 2007

• 5 Why are most minerals not popular as gems?

March 26, 2007

• 37 Hindu lore rubies

March 23, 2007

• 35 Corundum

March 20, 2007

• 34 Heat conduction