Cat’s-eye has a silky streak of light that moves with the turning of the stone like a gleam in a straight line across the stone.It is an aluminate of beryllium-a mixture of aluminum and beryllium-having traces of oxide of iron and chromium, which serve as coloring agents and give it brownish and greenish tinges. It has a chatoyant glowing.
from inside like the eye of a cat and having white fibers. The brighter the fiber, the higher is the quality of the gem

The gemstone of Rahu is a good-quality hessonite, that reflects a nice honey color. Zircon has a considerable range of colors and is found in red, blue, green, yellow, orange, and brown shades. Blue and green hessonite or, blue, green, yellow, orange, and brown shades. Blue and green hessonite or the white colorless variety of hessonite is not associated with Rahu. A pure and transparent hessonite having a delicate hue, brilliance, lustre, and uniform color neutralizes the negative effects of Rahu, and if Rahu is well posited it gives beneficial results during its major period and sub-periods, removes fear, creates clarity of mind, decreases the unnecessary depression and helps spiritual growth.

The diamond is most attractive to the eyes and is famous for its play of colors. It emits very delicate bluish, reddish, or a mixture of blue and red radiance of glittering lustre when exposed to light. The gem is luminous and dazzling, and emits sparks of light. It is the most beautiful of all the gems. A fine diamond is effulgent, radiant, and delightful. It is as soothing to the eyes as the Moon it is lovely and magnificent and has the self-luminous quality of a clear crystal. It is brilliant and radiates rainbows of light all aroundthere are eight types of diamonds mentioned by the Ancient Hindu scriptures, they are: Hanspati, Kamlapati, Vasanti, Vajraneel, Vanaspati, Sbyamvajra, Telia, and Sanloyi.

 

Yellow sapphire is a gem that belongs to the corundum family, is a twin of ruby and blue sapphire. It is found in yellow, golden, and orange colors, as well as in a colorless variety known as white sapphire. Lemon-yellow color is said to be the best gem.

The color of coral depends on the depth at which it is found - below 160 feet its color is light.The best-colored corals are found between depths of 100 and 160 feet. It is found in many shades of red and pink. The color usually ranges from white to pink to vermilion red and deep scarlet. Corals of yellow ocher, cream, chocolate and black color are also available. Coral is a calcareous,skeleton-like deposit of the coral polyp- a tiny invertebrate that dwells in quiet waters and is found at depths ranging from 20 to 1,000 feet. A good coral that is related to the planet Mars and recommended by astrologers, gem therapists and jewelers is a deep red coral, which resembles well-ripened bimb fruit or an unripe cherry.