DIAMOND

Peridot is sometimes called "evening emerald" since it turns ;ht green in artificial light. Gold colors were once called "chrysoor topaz because they came from Topazos, an island in the Red –sea now called Zebirget or St. John's Island. Brown peridot is rare, and most brown peridots are actually a stone called sinhalite that is . related to peridot. Peridots are also found in the United States in Arizona, in Burma, and in other countries.
The association of peridot with the sun meant that it could break spells and dispel the mysteries of darkness and bad dreams. It would also cure a variety of illnesses.

Peridot Substitutes. Synthetic spinel and even glass are used to riulate peridot. Spinel is harder than peridot, however. "Oriental chrysolite" is corundum, which is much harder.

Cryptocrystalline Quartz

This variety of quartz ranges from translucent to completely e. The latter may be called chalcedony. A gate. Agate is chalcedony that comes in a variety of colors and patterrns. Dendritic agate has a pale background with a pattern that resembles trees or plants. Moss agate has a green moss-like pattern. snowflake agate has a snowflake-like pattern against a dark background.

Agate was one of the first stones worked by primitive man and on of the first to be engraved. Some of its attributes were as a cure for insomnia, to make its owner prudent and cautious, and to bring . in battle. Aventurine. Aventurine is weakly translucent with a speckled, metallic sheen due to inclusions of small mica crystals. It is generally although it may be reddish brown, yellow, white, or blue.

Bloodstone. Bloodstone is sometimes called "plasma" or "he" It is an opaque green chalcedony dotted with red, which account for its name. The dots may also be white or yellow. Bloodstone red markings was supposed to stop bleeding as well as lightning thunder, and rain. The Aztecs carved it in the form of a heart.