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Finest Precious Stones In The World listed by Agent4Stars.com

Diamond Of all precious stones the diamond has the simplest composition; it is merely crystallized carbon. Carbon is present in every plant, mineral and animal on earth. Diamonds comes typically from the mines in South Africa. Other countries like India, Brazil, Australia and the United States there has been found diamonds too.

Emerald An emerald is almost certainly the rarest of all precious stones and is measured by some to be even more valuable than the diamond. If you compare it with other precious stones the emerald is unique in its occurrence in nature. Because it is found in the rock in which it was formed. Different from diamonds, sapphires and rubies, the emerald never occur in gem gravels. The first known locality where emeralds were found was in Upper Egypt close to the coast of the Red Sea. The best emerald stones are found in Columbia, South America. Fine specimens have also been found in the United States in North Carolina.

Ruby Rubies are the oldest or first identified of all precious stones, dated far back in the early history of Caldera and Babylonia. The finest specimen and the largest quantities are found in Upper Burma. And nowadays over one−half of the world's supply comes from Upper Burma. The rubies found in Siam, Ceylon and Australia have not the deep rich color like the Burmese ruby: a shade of red slightly inclined to the purple and it is often called Pigeon Blood Ruby. The value of a ruby depends upon its color and transparency.

Sapphire A sapphire, also named the protector of the innocent, the celestial guardian of truth. It is also told to bring health and youth and it is a symbol of the heavens. The sapphire is birthstone for the month of September and it is made of the same mineral as the ruby, the mineral corundum.

Precious Opal shows a variable interplay of internal colors and does have an internal structure. At the micro scale precious opal is composed of silica spheres some 150 to 300 nm in diameter in a hexagonal or cubic closed-packed lattice. These ordered silica spheres produce the internal colors by causing the interference and diffraction of light passing through the microstructure of opal. It is the regularity of the sizes of the spheres, and of the packing of these spheres that determines the quality of precious opal. Where the distance between the regularly packed planes of spheres is approximately half the wavelength of a component of visible light, the light of that wavelength may be subject to diffraction from the grating created by the stacked planes. The spacing between the planes and the orientation of planes with respect to the incident light determines the colors observed. The process can be described by Bragg's Law of diffraction.

Pearls Real or natural or pearls are made by oysters and other mollusks like it. The cultured pearl is also grown by mollusks, but with human involvement: an irritant is put into the shells, and causes the pearl to grow. Imitation pearls are artificial made with plastic, glass or a organic material.

Agent4Stars.com also list

Precious metals: Gold • Palladium • Platinum • Rhodium • Silver Precious metal alloys: Electrum • Rose gold • Sterling silver • White gold Base metals/alloys: Brass • Bronze • Copper • Stainless steel Mineral Gemstones: Aventurine • Agate • Alexandrite • Amethyst • Aquamarine • Carnelian • Citrine • Diamond • Emerald • Garnet • Jade • Jasper • Malachite • Lapis lazuli • Moonstone • Onyx • Opal • Peridot • Quartz • Ruby • Sapphire • Sodalite • Sunstone • Tanzanite • Tiger's Eye • Topaz Organic Gemstones: Amber • Copal • Coral • Jet • Pearl