the.com/benitoite

California's official gem, bluer than sapphire and rarer than your patience in traffic.

means A rare, deep-blue barium titanium silicate mineral, prized as a gemstone and found in fine quality essentially only in California, where it is the official state gem.

from Named for the place it was first found around 1907: San Benito County, California, near the headwaters of the San Benito River — itself named for Saint Benedict (Spanish 'San Benito'). The mineral suffix '-ite,' from the Greek '-ites' meaning 'belonging to,' is the standard tag geologists hang on rocks and minerals. So the name simply means 'the stuff from San Benito' — a saint's name, routed through a river and a county, ending up on one of Earth's bluest gems.

only source
Gem-quality found almost solely in San Benito County
glows wild
Fluoresces electric blue under shortwave ultraviolet light
discovered late
First identified in 1907, mistaken for sapphire
state gem
California adopted it officially in 1985
barium clue
A rare barium titanium silicate, chemically peculiar
for instance

benitoite state gem california — official state gem of california since 1985, found in san benito county

the benitoite mine — historic mining location in san benito county, california where the mineral was first discovered in 1907

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