In PBC, AMA preferentially react with the E2 component of one of the multienzymes that is called the pyruvate dehydrogenase complex (PDC). Accordingly, the antigen is designated as PDC-E2. The practical importance of all of this is that the PDC-E2 antigen is now used, as discussed below, in a diagnostic test for PBC.
Moonstone is said in crystal healing to help calm responses and stress, and avoid overreaction. It brings hope, enhances feminine energies, sensitivity, intuition, and psychic abilities. It is also said to bring strong energies of abundance to one's life. Moonstone is a stone of protection, especially during childbirth, pregnancy, and travel at sea. It is a stone of calm and relief from emotional stress. It is also associated with love of all kinds. Physically moonstone is used in crystal healing to aid the pituitary gland and digestive system, obesity, water retention, hormonal problems, menstrual problems.
Even some of the black gemstones above â hematite, jet and obsidian in particular â are not categorically precious or semi-precious stones; but these black stones are used as ornaments. Other black rocks made into jewelry include amphibolites, lodestone, tektite and lava.ike white moonstones, the black gemstones hail from the group of minerals called feldspars, along with sunstone, oligoclase and andesine. The black semi-precious stones are not necessarily black entirely, but may be grey, interspersed in many cases with the beige and white of the more well-known moonstone.