Large bloodstone rough (also known as heliotrope) from India is available in sizes from one to four pounds, plus. (Stock 225) This superb chalcedony has shades of dark green, spotted with assorted sizes of red spots or small inclusions of iron oxide. The bloodstone is high quality material and very dense, so keep your saw blade sharp. (See tips on Common Problems When Using Your Rock Saw listed under "Lapidary Tips".) How to slab bloodstone for cabochons and specimen slabs: To get maximum color and pattern out of India bloodstone, it must be properly oriented. Almost all bloodstone we've handled has very subtle banding and we suggest slabbing the rough as close to parallel to those bands as possible. This will yield the largest and most prolific "blood" spots. Bloodstone is ideal for jewelry such as crosses, cabochons, beads and more and is one of the birthstones for the month of March. India Bloodstone slabs are also available. Also check out Bloodstone, premium slabs.