Garnet pegmatite and allied rock types and in certain low grade metamorphic phyllites. Spessartine of an orange-yellow is found in Madagascar. Violet-red spessartines are found in rhyolites in Colorado and Maine. Blue pyrope–spessartine garnets were discovered in the late 1990s in Bekily, Madagascar. This type has also been found in parts of the United States, Russia, Kenya, Tanzania, and Turkey. It changes color from blue-green to purple depending on the color temperature of viewing light, as a result of the relatively high amounts of vanadium (about 1 wt.% VO). Other varieties of color-changing garnets exist. In daylight, their color ranges from
Type set Type set A type set is a coin collection based on coin design or type. Traditional collections consist of all dates within a series such as state quarters or Lincoln cent. Type sets are more popular for practicality and therefore are more common among younger or less wealthy coin collectors. Date sets are more common with more experienced and wealthy collectors, who focus on getting every year and mint for a series of coins. A Type Set may contain the designs of only one denomination. For example, the dime has had 12 - 14 distinct designs. The definition of what