A sterling silver pendant featuring one bezel set square shaped straw topaz on a 16 inch silver chain. This necklace was designed and made by Sydney Strong.
Topaz is an aluminum silicate containing fluorine and has a chemical formula of Al2(F,OH)2SiO4. It is formed by fluorine-bearing vapours given off during the last stages of the crystallization of igneous rocks. It typically occurs in cavities in rhyolites and granite, in pegmatite dikes, and in high-temperature veins. Often associated with cassiterite, topaz may be useful to indicate the presence of that tin ore.
Topaz actually has an exceptionally wide color range that, besides brown, includes various tones and saturations of blue, green, yellow, orange, red, pink, and purple. Colorless topaz is plentiful, and is often treated to give it a blue color. Topaz is also pleochroic, meaning that the gem can show different colors in different crystal directions.
An oxidized sterling silver and 18k yellow gold pendant bezel set with a rectangular straw
topaz 12.99 carats with a bar frame. This necklace was designed and made by Sydney Strong.