Black Botswana Agate pendantDramatic Botswana Agate pendant in free form pear shape with sterling silver bail. Botswana Agate meaning: Botswana Agate is volcanic in origin from 187 million years ago. Unlike other igneous stones which form in flat layers, these stones formed in waves along rolling in and out of existing fault lines. Botswana Agate does come from Botswana, Africa. There it is known as Sunset Stone. It is believed to hold the sun's light and it is believed to