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In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...
The aforementioned gem-quality occurrences of Pamir and Taymyr were discovered only recently: the former in the early 1980s, and the latter in 2000. These deposits are scarce and only sporadically mined, so clinohumite remains one of the rarest gemstones with only a few thousand carats known to exist in private collections.
The Natural History Museum of Los Angeles County's latest jewelry show is one of the most spectacular precious stone exhibitions you're likely to see.
Responsibility for it was transferred from the California Department of Conservation to the California Department of Parks & Recreation in 1999. It is the only California State Park without associated land. The international collection holds over 13,000 minerals, rocks, gems, fossils, and historic artifacts.
In February 2007, the world's rarest baseball card sold at auction for $2.3 million. If you think that's totally wild, consider the world's rarest bible, which could net you $25 to $35 million.
The analogy is a very close one, and this theory receives much support from the fact that in Canada (at various places in Ottawa and Ontario) there are numerous valuable apatite vein deposits. They lie in basic rocks such as gabbro and pyroxenite , and these in the neighborhood of the veins have been extensively scapolitized, like the spotted ...