Variscite is a relatively rare aluminum phosphate mineral closely related to turquoise in its chemical composition.  This material from Utah is noted for its glowing green color, varying in intensity from a light, mint green to a vibrant Kelly green often "webbed" in a gray matrix.  Although softer than agate or jasper (somewhere around 5 on the Moh's scale) it takes a great polish and makes wonderful finished pieces.

Origin:  Utah

Dimensions:  3.75" x 3.25" and is approximately 8.2 mm thick on the bottom with a slight taper of 6.6 mm on the top.  Weight = 133 grams. 

Shown wet.  Not polished.  Known flaws are shown as white line in the final picture frame.