âThe term natural flavor or natural flavoring means the essential oil, oleoresin, essence or extractive, protein hydrolysate, distillate, or any product of roasting, heating or enzymolysis, which contains the flavoring constituents derived from a spice, fruit or fruit juice, vegetable or vegetable juice, edible yeast, herb, bark, bud, root, leaf or ...
Sugilite is a somewhat obscure mineral named for the Japanese geologist who discovered the first specimens in 1944, Ken-ichi Sugi. It is becoming very popular in the jewelry trade. It does not form well shaped crystals but is usually massive. This is OK, as it is used mostly for ornamental and semiprecious stone purposes.
Pyrite is a polymorph of marcasite, which means that it has the same chemistry, FeS2, as marcasite; but a different structure and therefore different symmetry and crystal shapes. Pyrite is difficult to distinguish from marcasite when a lack of clear indicators exists. Pyrite's structure is analogous to galena's structure with a formula of PbS.