Scapolite owns its name from the greek meaning ?shaft? as it is usually found as
long prismatic rod like crystals. Gem quality scapolite was originally discovered
in 1913 in the Mogok Stone Tract in upper Burma (Myanmar). There, white, pink, yellowish
or violet stones of high quality are found. Many of these stones can be cut into
cabochons with fine cat?s eyes. Since the discovery in Burma, other gem quality
stones have been found in Madagascar, Mozambique, Brazil, and Kenya. Scapolite is
commonly not seen as a cut gemstone in fine jewelry with the exception of the exquisite
cat?s eyes gemstones it can produce. Such fine gemstones are still very rare gemstones
as the material is not abundant. It can be quite transparent with fine color. Faceted
stones are searched to make a nice addition to any gemologist?s compilation.
The hardness of the mineral makes it best suited for pendants or earrings. Otherwise,
it is an interesting mineral to add to a collection. Because scapolite is a mixture
of minerals, the specific gravity and refractive index will vary. However, most
stones have a hardness near 6 on the Mohs scale. Some yellow scapolite may be confused
with citrine or yellow beryl. One method to differentiate scapolite from these other
stones is by the use of a long-wave ultra-violet light. Scapolite can fluoresce
with a yellowish to orange color. Quartz and beryl do not display such fluorescence.
The mineral scapolite, also known as wernerite, is actually a series of minerals
run from marialite (Na4Cl(Al3Si9O24)) to meionite (Ca4(SO4CO3)(Al6Si6O24)). This
means that the scapolite series of minerals are silicates of aluminum with calcium
and sodium.
This mineral crystallizes in the tetragonal system and individual crystals may have
a short prismatic habit with terminated with low pyramid faces. Scapolite is typically
found in metamorphic or less commonly igneous rocks. Pink, purple and yellow scapolites
make nice gemstones for jewelry. Cat's eye scapolite display strong chatoyancy or
cat's eye effect due to the fibrous tube like inclusions often found. The eye can
be absolutely stunning and ranks among the most beautiful variety in the cat's eye
gem kingdom.