Gemmology factsMinerals quiz
What's the origin of the word "turquoise"?
Turkey as a country. The name Turquoise was established in the seventeenth century and came from the name of Turkey (turquoise is French for "Turkish"), because the mineral was first brought to Europe from Turkey. Ancient Romans called this rock Kalalit.
What is the Greek name for amber?
Elektron. Words like "electricity" come directly from the name of amber. Already the ancient Greeks noticed that this stone has a certain mysterious property: when rubbed with fur, it begins to attract particles of dust...
What gemstone is this?
Malachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and spaces, deep underground.