Maligano jasper
Commercial name for a white-yellow-brown-gray-black mottled rock. Most likely a silicified conglomerate, with “landscape structures” and dendrites. Named after the locality of Maligano, Sulawesi, Indonesia.…
Category: Gem or Scam? Library
Mary Magdalene quartz
Commercial name used for various forms of quartz with inclusions. Mainly for quartz with red hematite inclusions, sometimes making the quartz entirely pink to red…
Master Shamanite™
Unregistered commercial name for black limestone with fossils, introduced by Robert Simmons of Heaven & Earth. This material is claimed to be a very special…
Maraba amethyst
Commercial name for amethyst from the site of “Copia de Maraba Mine” in the Amazon in Brazil, probably referring to Marabá in the Pará region…
Mariam / Miriam jasper/stone
Commercial name for a yellowish-brown to brownish-red sedimentary rock from the Indian Himalayas with light brown lines and arches. The curved lines are transverse sections…
(Rainbow) Mayanite™
Commercial name for quartz with a natural iridescent layer of an iron oxide, probably goethite or limonite. Sole right to use the name Mayanite™ and…
Medusa quartz
A commercial name for quartz with inclusions of the mineral gilalite. Under magnification, the blue and green inclusions resemble Medusa quartz. Medusa quartz from Brazil…
Melody Stone™
Unregistered commercial name used for material said to contain the following combination of minerals: quartz, smoky quartz, rutile in quartz (rutile quartz), amethyst, goethite, lepidocrocite…
Merkabite / Merkaba Calcite™
Unregistered commercial name for white calcite reportedly found only in Kansas, United States. This is doubtful. The name is derived from the merkaba, a star…
Merlinite
Commercial name for a combination of psilomelane (an obsolete term for manganese oxides) and quartz, best known from a site in New Mexico, United States.…
