Septarian Stone - Egg Nebraska fossil Unlike the common red garnets

Unlike the common red garnets

Shank Width: 3mmApproximate weight of 1 piece: 3g

000 year old crater near Aktyubinsk

Approximate size for 1 piece: 7cm x 6cm x 3cm

It is comparable to a 301 Blade

Septarian Stone - Egg Nebraska fossil Unlike the common red garnetsMined from: Madagascar Description: Septarian stones are unique and beautiful limestone nodules with intricately spiderwebbed cracks of calcite running through them. They form when the cracks within sedimentary calcite nodules are filled with calcium carbonate rich water, which slowly crystallizes into black calcite. The calcite is highly UV reactive, glowing a bright yellow color under UV. The color inversion from black to yellow is quite striking!