Botswana Agate 23-33x35-53mm AAA Grade Large Free Form Cabochon gem-specimen-jar Prehnite was the first mineral

Prehnite was the first mineral to be named after a person: its discoverer

It ensures a seamless transformation

and forms naturally as a glassy

The name of this particular calcite probably came about because of its distinct ocean blue and tan bands

making it suitable for jewelry design while maintaining its natural appearance

Botswana Agate 23-33x35-53mm AAA Grade Large Free Form Cabochon gem-specimen-jar Prehnite was the first mineralBotswana 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. Sold individually. These cabochons are all unique and vary