When we think of precious stones, diamonds, emeralds, and rubies jump to mind as the most valuable gemstones in the world. However (or perhaps surprisingly), there are so many gemstones that are even rarer and, in turn, even more valuable. There are roughly 200 varieties of natural gemstone known in the world today. Alongside […]
There are four possible birthstones of December: tanzanite, zircon, blue topaz and turquoise – all of them, best known for beautiful shades of blue. Tanzanite is the most recently discovered gem, so it is the least known. The mineral zoisite is quite common reddish-brown stone found throughout the world, but blue zoisite or Tanzanite is […]