However, when it comes to the modern or secondary birthstone of agave, there's some variation of color. According to the National Museum of Natural History, "Agates are typically white ...

The "Blue Agate with White and Sky Blue" colorway follows a calm sea and sky theme with blue color details. These are unisex shoes and will be coming in men's and women's sizes. Disclaimer ...

On the outside, the sphere-shaped thunderegg appears to be a roughly noduled rock, typically grayish brown in color. Its size ranges ... formations consisting of agate, jasper, opal and quartz ...