A precious gem is nature's wonder, beautiful, valuable, brightly coloured and extremely rare.Crystalline precious stones including popular gems such as ruby, emerald, sapphire, tourmaline, spinel, aquamarine, tanzanite and amethyst. Other gemstones in the broadest sense of the word, include pearls, opals, rose quartz and prehnite, which are also used in jewellery.
A pearl is a hard object produced within the soft tissue (specifically the mantle) of a living shelled mollusc. Just like the shell of a clam, a pearl is made up of calcium carbonate in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes of pearls (baroque pearls) occur. The finest quality natural pearls have been highly valued as gemstones and objects of beauty for many centuries, and because of this, the word pearl has become a metaphor for something very rare, fine, admirable, and valuable.
Diamonds are a girl's best friend because of its spellbinding charm and dazzling sparkles. What should you know when shopping for a diamond? How do you take care of the precious stone? Diamonds are natural mineral formed deep in the earth crust. Under high pressure and high temperature, carbon atoms are re-arranged to give the rare gem. Diamond is the hardest natural substance on earth, yet it is brittle. It may still crack if subject to heavy stress.