GARNET: THE BIRTHSTONE FOR JANUARY
People most commonly associate the word “garnet” with ruby-red gemstones, but in fact garnets are available in a wide assortment of colors, ranging from orange, yellow, green, to violet (but no blue specimens are known).
The Oxford English Dictionary connects the etymology of “garnet” with
Zircon: A birthstone for December.
Zircon, a silicate of zirconium with the chemical formula ZrSiO4, is a gemstone available in a wide range of colors, including yellow, red, green, and reddish brown, but the stone is best known for its striking blue colors. Zircon has often been confused with diamond,
Precious Topaz: Birthstone for November
Precious topaz, also known as imperial topaz, is an uncommon variety of topaz that derived its name from the Russian tsars. The Russian royal family enjoyed a monopoly on the ownership of precious topaz, which was extracted from state-controlled mines.
Before saying more about precious
Opal: Birthstone for October
A beautiful but fragile gemstone that appears in a wide variety of forms and all colors of the rainbow, opal is hydrated silica (silicon dioxide) that can have a water content of up to 20%. Opals are formed when water containing dissolved silica leaches through sedimentary rock
One of the most highly-regarded gemstones, sapphire is a variety of corundum (aluminum oxide, Al2O3), making it a close relative of the ruby. While sapphires are traditionally associated with the color blue, sapphires can come in every color but red. Trace amounts of iron and titanium give sapphires their