Botswana Agate 10mm Round - 8-Inch Gift Cards known as sheet silicates because

known as sheet silicates because they form in distinct layers

a Venetian monk tipped molten copper into a vat of molten glass

4 Inches / 40x60mm / 4x6cm

Ruby is a precious gemstone known for its deep red color

sodalite and pyrite

Botswana Agate 10mm Round - 8-Inch Gift Cards known as sheet silicates becauseBotswana Agate displays highly defined parallel banding, usually in white on hues of brown, gray, pink, tan, apricot and purplish red. Botswana Agate was formed nearly 187 million years ago by lava flowing in waves from long faults in the earth. This lava rolled across the landscape, depositing layer upon layer of Quartz silicate to create the banding and patterns now prized in Botswana Agate.