About: Today's featured article/June 30, 2012   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Yogo sapphires are a variety of corundum found only in Yogo Gulch, Montana, part of the Little Belt Mountains in Judith Basin County, on land once inhabited by the Piegan Blackfeet people. Yogos are typically cornflower blue in color, a result of trace amounts of iron and titanium. Many gemologists consider them among the finest sapphires in the world. They have high uniform clarity and maintain their brilliance under artificial light. Because Yogo sapphires occur within a vertically dipping resistive igneous dike, mining efforts have been sporadic and rarely profitable. It is estimated that at least carats (kg)

AttributesValues
rdfs:label
  • Today's featured article/June 30, 2012
rdfs:comment
  • Yogo sapphires are a variety of corundum found only in Yogo Gulch, Montana, part of the Little Belt Mountains in Judith Basin County, on land once inhabited by the Piegan Blackfeet people. Yogos are typically cornflower blue in color, a result of trace amounts of iron and titanium. Many gemologists consider them among the finest sapphires in the world. They have high uniform clarity and maintain their brilliance under artificial light. Because Yogo sapphires occur within a vertically dipping resistive igneous dike, mining efforts have been sporadic and rarely profitable. It is estimated that at least carats (kg)
dbkwik:speedydelet...iPageUsesTemplate
Month
  • June
Year
  • 2012(xsd:integer)
abstract
  • Yogo sapphires are a variety of corundum found only in Yogo Gulch, Montana, part of the Little Belt Mountains in Judith Basin County, on land once inhabited by the Piegan Blackfeet people. Yogos are typically cornflower blue in color, a result of trace amounts of iron and titanium. Many gemologists consider them among the finest sapphires in the world. They have high uniform clarity and maintain their brilliance under artificial light. Because Yogo sapphires occur within a vertically dipping resistive igneous dike, mining efforts have been sporadic and rarely profitable. It is estimated that at least carats (kg) of Yogos are still in the ground. The Smithsonian Institution first reported on Yogos in the museum's annual report on June 30, 1899. Jewelry containing Yogos was given to First Ladies Florence Harding and Bess Truman; in addition, many gems were sold in Europe. Today, several Yogo sapphires are part of the Smithsonian Institution's gem collection. In 1969, the sapphire was co-designated along with the agate as Montana's state gemstones. (more...) Recently featured: Olivia Shakespear – Pyotr Ilyich Tchaikovsky and the Belyayev circle – Rochester Castle
Alternative Linked Data Views: ODE     Raw Data in: CXML | CSV | RDF ( N-Triples N3/Turtle JSON XML ) | OData ( Atom JSON ) | Microdata ( JSON HTML) | JSON-LD    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 07.20.3217, on Linux (x86_64-pc-linux-gnu), Standard Edition
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2012 OpenLink Software