The placer deposits of Sri Lanka, Myanmar (Burma), and Thailand provide most of the gem material.
Treated gem, also called Treated Stone, genuine gem material whose colour has been artificially enhanced or produced to increase the value of the stone; staining, heat treatment, and irradiation are among the treatments used.
Before the neighborhood was razed by fire, it was the 17th-century equivalent of New York's modern Diamond District: a hub of commerce, creativity and craftsmanship fueled by an influx of immigrant artisans working with extraordinary gem materials imported from around the globe.
According to these data, the optical property changes are then attributed to the gem-material surface modification.
Before developing a TRP-GEM-derived orthotopic model, we evaluated the histopathology of grade IV GBM tumors from the de novo GEM (supplementary material Fig. S1A).
Hemmerle presented its share of impressive artistic creations with new unique pieces that focus on combining precious gems with materials normally not associated with jewelry making.
He makes molds out of RTV silicon, then a resin cast the exact size and shape of the original, and tries to find the right combination of natural gem and synthetic materials to mimic the gem's distinctive color.
Among the gems in that material are drawings for Wright's Fallingwater, a home cantilevered over a stream in Mill Run, Pa.; the Robie House, a Prairie-style building on the University of Chicago campus; Unity Temple, a Unitarian Universalist church in Oak Park, Ill.; and Taliesin West.
Some of the best gems appear in "bonus" material, oddly tucked away at the end of each disc: Stravinsky at 83 conducting his "Firebird" Suite, the pianist Solomon playing Beethoven's "Appassionata" Sonata just before his debilitating stroke, and the violinist Mischa Elman playing short works by Fritz Kreisler with a weeping old-world tone.
The pseudoscience of these little gems lies in the material, Baltic Amber (that's right, straight from the Baltic region).
When he passed away, I listened again to the interview recording and found some gems amongst previously unpublished material.
