8mm Blue Lace Agate Bead Strand d2e543918906ecc7fd64e189d936f36c Crinoids began life some 530

Crinoids began life some 530 million years ago

This comes from small amounts of chromium replacing some of the aluminum

livestock and tools

This comes from the oxidized iron introduced to them during their formation

All Southwestern tribes make and use fetishes

8mm Blue Lace Agate Bead Strand d2e543918906ecc7fd64e189d936f36c Crinoids began life some 530Blue Lace Agate is a light blue, banded variety of Agate. Agate is a variety of silica composed of alternating layers of various colored chert or quartz. Agates were named after the Acate River in Greece where the stones were originally found. The most accepted theory as to how these Agates formed is that as lava cooled, gas and steam accumulated to form bubbles or cavities. For many eons, water that carried silica penetrated the copper and iron