Cat's Eye
It is found in Sri Lanka, Brazil, North America, and the Vindhyachal in India. The best cat's eye is that of Sri Lanka. It has a white stripe like that of an eye of a cat.

Cat's eye of wheat field is considered the best. Its colour is dark, yellow, white, and black. Sometimes, cat's eye got from wheat field has two stripes. It has no equivalent in price. It can be got from mere twenty rupees a carat to three lac a carat. It used to be worn in battles. When Vibhishana was expelled by Ravana, he had a rosary of cat's eyes on his neck which Meghnad wanted to have.

There are four kinds of cat's eyes :
1.Shishupali-It is big in size but less in weight.
2.Kanch-It is susceptible to scratches.
3.Girikanch-It has no lustre.
4.Sphatik-It is extremely bright and clear. Cat's eye is known by various names: viduraj, vaidurya, vidalaksha, abhraroh, rashtak, meghakharankur, bal surya, vidur ratna in Sanskrit; lahsunia in Hindi and Urdu.

It has three sub-gems :1.Godant, 2.Godanti,3. Sanghiya.

The high quality and auspicious cat's eye is the one with black and white lustre, clear, protuberating, which has white clouds, with white stripe. The more bright and straight the white stripe is, the better it is. The cat's eye without the stripe is called karketak.

It is found in yellow, black, green, and blue colours.


Blue Sapphire
The Kashmiri blue sapphire is considered to be the best. Its colour is like that of peacock's neck.

The blue sapphire found in Salem in South India has more of green colour mixed with yellow and blue colours. It is also found in Rhodesia and Russia and is considered of the meanest quality .

The Myanmar blue sapphire has less of green and beautiful blue. The Sri Lankan blue sapphire is not of as high quality as that of Myanmar or Kashmir .

The Australian blue sapphire is attractive blue while the American one has metal like lustre.

It is known by various names: neel, mahaneel, shaniratna, neelratna, nalopan, shori, Indraneel, irinashahi in sanskrit; neelam, neelmani in Hindi; neelam, neela yakut, ahud in Urdu; indraneel in Bengali; and Sapphire in English.

Ancient Indian scriptures classify blue sapphire into two categories: 1.Jalaneel and 2.lndraneel.The blue sapphire with white lustre and blueness around is called jalaneel; while the one having mixed blue and red into violet colour is called indraneel.

The best and most attractive blue sapphire is found in Kashmir, where its mines are situated at a height of fifteen hundred feet near Sumjak village.

The biggest, most attractive, and most precious blue sapphires too have been found in Kashmir.There was a blue sapphire of 951 carats, in Reeva. There are two 132
carat blue sapphires, two inch long and one and half inch wide are stored in Jordan Dase Planten Museum. The Devenshire Duke has a 100 carat blue sapphire.

There is a statue of Lord Budha in British Museum which has been made from a single blue sapphire. There is exhibited a 142 carat blue sappire in Paris. It was found by a seller of wooden spoons in Bengal and was also in possession of Dornly of Scot Marry .

There is studded a blue sapphire of the size of human heart in the Crown of France and is stored in a museum. It is said to be of the year 1575. A priest had given two big stainless blue sapphires to Napoleon the Great which were later in possession of Louis III.

Coral

Coral is found in the coasts of Algeria, Tunisia, Karsika, Sardenia, and Cicili. It is also found in Japanese Coasts.

Italians extract coral from sea and transform it into gems in Naples. Mostly, coral is of the colour of ox blood and is also called morocoral. Dark red coral is also found in Spain coasts.

It is known by various names: praval, vidram, latamani, angarak, raktang mani in Sanskrit; moonga in Hindi; and mirjan in Urdu.

Coral has been used in jewellery since ancient times. Romans used it much and they also made amulets of it. There are many tell tales about its supernatural powers. In India too, coral is accepted as a gem. It has found its place in gems due to its attractive lustre and colour. It is not a precious gem. It is sold from twenty-five to eighty rupees a carat.

Corals engraved in ancient times are available even today, however, these days coral is not engraved. In 1980, an engraved coral rosary was valued at six thousand pounds. There is a stick handle made of engraved coral in the royal family of Italy which was valued at 308 pounds in 1983.