Garnet shades of green, beige, brown, gray, and blue, but in incandescent light, they appear a reddish or purplish/pink color. This is the rarest type of garnet. Because of its color-changing quality, this kind of garnet resembles Alexandrite. Andradite is a calcium-iron garnet, CaFe(SiO), is of variable composition and may be red, yellow, brown, green or black. The recognized varieties are topazolite (yellow or green), demantoid (green) and melanite (black). Andradite is found both in deep-seated igneous rocks like syenite as well as serpentines, schists, and crystalline limestone. Demantoid has been called the "emerald of the Urals" from its occurrence there,
Gemstone (database) web application server platform. (VisualWave and VisualWorks are now owned by Cincom.) GemStone played an important sponsorship role in the Smalltalk Industry Council at the time when IBM was backing VisualAge Smalltalk, now owned by Instantiations, Inc. After a major transition, GemStone for Smalltalk continued as "GemStone/S" and various C++ and Java products for scalable, multitier architecture distributed computing systems evolved into the "GemStone/J" product. This in turn gave rise to "GemFire", an early example of a Data Fabric for complex event processing (CEP), event stream processing (ESP), data virtualization, and distributed caching. On May 6, 2010, SpringSource, a division