Small (S): ?1.5 oz; Diameter, ?50 mm; Thickness, ?5.0 mm. Medium (M): ?3.0 oz; Diameter, ?70 mm; Thickness,?7.5 mm. Large (L): ?4.0 oz; Diameter, ?80 mm; Thickness, ?7.5 mm. Large Plus (LL) : ?5.5 oz; Diameter, ?90 mm; Thickness, ?10.0 mm. Petrified Wood Stone Decorative Crystal Slices. These fossilized specimens are Nature's true miracle with structural features still preserved after millions of years. The sliced specimens are professionally polished on one side to expose woods venation, ring pattern, and other internal structures. Please ask if you're specifically looking for both sided polished). The shape, size, coloration , natural design, ring patterns, thickness etc., are unique and varies piece to piece. Great for Office, Home Decor, or as a Healing Gifts. Ideal decoration for bedrooms, living rooms, bathrooms, entryways, offices. Available in three sizes by Weight, Diameter and thickness