The topaz is said to derive its name from the island Topazian in the Red Sea. This is a comparatively rare stone, and very unusual one, having unique and very beautiful colouring. The Topaz, in fact, is found in Five colours - pink, bIack, white, green and yellow, but it is of the yellow colour we are concerned here. Topaz is not valued so highly as diamond, ruby, emerald or sapphire. The ancients called it "The Stone of Strength", employing it widely in healing. In India and Ceylon, it is the saffron-colour yellow topaz, which is most highly prized for its mystical and magical powers. The people of these countries say that it will bring to its owner good health, faculty of wisdom, and assurance that death will come neither by violence nor suddenly. To the ancient Egyptians, it symbolised knowledge ,and corresponded with the Sun-god, giver of life and fertility, because it enlightens. In astrology, it was ruled by the Sun, subjected to heat, they lose their colour.

This is the gem of recent times. It has some special qualities. One side of it rubbed on a silken cloth produces electricity and attracts small pieces of threads and paper etc. The other side of it does not attract anything.On one side it looks transparent and on the other side opaque. It is found in blue, red, pink, green and black colours. Its virtues are

Note
I. It should be worn in silver. 

2. It suits best to those who have their Sun in Libra sign in their birth chart. 

The literature of all nations of antiquity makes mention of this jewel especially stressing its value as a focussing point for healing and occult forces, and as a beneficient and fortunate talisman.More precious and only available in smaller pieces, is turquoise. A good turqoise is sky-blue, but it is inclined to fade. It is, nevertheless, a fine stone but with a different significance from either sapphire or lapis lazuli. It has a colour which emits healing radiation, the particular shade of greenishblue which characterises this stone being very soothing and calming. In medieval and by gone times, this gem was often employed in the direct treatment. For this reason, it has been recommended as a "Eye-Stone" i.e. to be helpful in the treatment of many diseases peculiar to this organ. When so used, it was the practice to place the jewel directly upon the eye/eyes, so that healing power of the stone could be directed and concentrated there.

It is represented in a number of different colours. Mathura diamond is the name given to a colourless specimen. Jargon or Jargoon generally refers to the yellow kind-jacinth or hyacinth to the orange; malacon to the brown, while zircon in the restricted sense is used for green variety. 

This is a yellow stone, so called because it promotes love or charity. It cures stings and venomous bites, by being dipped in water and rubbed over the wound. 

Morbodius tells that the Agate, according to reports, was first found on the banks of a river, and was named after that river. Agate was used by the Magi of Persia for averting tempests. It not only gives vigour to him who wears it, but also endows him with grace, conversation and good manners and avert tempests and lightning. The Agate possesses some  wonderful virtues, for its wearer was guarded from all dangers, was enabled to vanquish all terrestrial obstacles and was endowed with a bold heart; this latter prerogative was presumably the secret of his success. It is said also to dispose to solitude, and secure favour of princes. Good against the biting of scorpions or serpents, soothes the mind, drives away contagious air.