EMERALD
The expensive member of the Beryl family. Coloured by trace amounts of Chromium or Vanadium, Emeralds form in some rather unusual and harsh geological conditions.
A glance through the magnifying-glass or microscope into the interior of an emerald tells us something about the eventful birth of this gem; here we see small or large fissures; here the sparkle of a mini-crystal or a small bubble; inclusions and shapes of all kinds. A birth as brutal as that of the emerald impedes the formation of large, flawless crystals. For this reason, it is rare that a large emerald with good colour and good transparency is found. That is why fine emeralds are so valuable.