Rhodonite in Quartz 'A' Grade Tumblestone  Rhodonite is a pink manganese silicate of variable composition that often contains significant amounts of iron, magnesium and calcium. This stunning tumblestone has Rhodonite as an inclusion within Quartz, although separately they are relatively common minerals, it is a rare and striking combination. Rhodonite is known for it's capacity to bring emotional healing and to release locked energy from within the heart chakra. This superb example measures approx. 3.1 cms x 2.3 cms x 1.8 cms and is densley included with Rhodonite.