Emerald in Matrix - Brazil Septarian Bookends also known as Tourmaline is

also known as Tourmaline is a group of mixed crystals with the following major members

The array of coloration in the layers of onyx is simply amazing

This puzzled people

Colored sapphires are referred to as Fancy Sapphires in the gem trade

plants and seeds

Emerald in Matrix - Brazil Septarian Bookends also known as Tourmaline isEmerald is a rare and valuable gemstone that is a variety of the mineral Beryl. They receive their beautiful green coloration from trace amounts of Chromium. Emeralds tend to have numerous inclusions, so unlike diamonds, which are magnified 10x to grade their clarity, Emeralds are graded by the eye. If "by eye" an Emerald has no visible inclusions, it is considered flawless. It is the traditional birthstone for the month of May. Emeralds have long