Botswana Agate 6x8mm Tri Cut Faceted Rondelle - 15-16 Inch Hubei Turquoise all sapphires are considered stones

all sapphires are considered stones of wisdom

According to Norse legend

Unlike other forms of opal

light gray or black

It was popular with the Greeks and Romans

Botswana Agate 6x8mm Tri Cut Faceted Rondelle - 15-16 Inch Hubei Turquoise all sapphires are considered stonesBotswana 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.