March 17, 2007

• 19 Smithsonian Collection

March 14, 2007

• 18 Royalty diamonds

March 11, 2007

• 16 Certified diamond

March 8, 2007

• 11 Fire

March 5, 2007

• Bonded Diamonds

March 2, 2007

• All About the Clarity of Diamonds

February 27, 2007

• 5 Why are most minerals not popular as gems?

February 24, 2007

• 37 Hindu lore rubies

February 21, 2007

• 35 Corundum

February 18, 2007

• 34 Heat conduction