Reasons for the Jewellery
Many reasons for the Jewellery has been used such as Currency, Artistic display, Wealth display, Storage, and Status. Other reasons are:
Functional use - There are many items of Jewellery which are originated as purely functional items but evolved into decorative items as their functional requirement diminished, these items are brooches and buckles.
Symbolism - Jewellery can also be symbolic of group membership. As in the case of the Christian crucifix or Jewish Star of David, or of status, as in the case of chains of office, or the Western practice of married people wearing a wedding ring.
Protection - Wearing of amulets and devotional medals to provide protection or ward off evil is common in some cultures; these may take the form of symbols - such as the ankh, stones, plants, animals, body parts - such as the Khamsa, or glyphs - such as stylized versions of the Throne Verse in Islamic art.
Keeping large amounts of wealth stored in the form of Jewellery in most cultures. And Jewellry used to create Jewellery as a means to store or display coins or in the form of wedding dowries in numerous cultures.
Diamonds are the hardest of precious stones
The word 'diamond' itself is a derivative of the Greek word adamas, which means 'unconquerable'. The diamonds rarity and natural beauty have contributed to making it such an extraordinary and magical gift. Diamonds are the hardest of precious stones. Many people are confused as to how a diamond is priced. It is the undiminished beauty of diamonds.
This does not mean that a diamond cannot be damaged only that they are difficult to damage requiring a very precise strike in an exact location in order to damage the surface. And that has made them so highly prized throughout several centuries. Diamonds continue to hold a deep fascination. As the diamonds is world’s ultimate symbol of love.
Gems are silicates which can be very stable, hard minerals. Like gemstones, one of the characteristics of a precious metal is its rarity. A few gems are oxides and only one gem, diamond, is composed of a single element, carbon. Often, new names will be created for ordinary sounding minerals which sound prettier or more valuable, such as Moldavite for the green variety of tektites.
It could not be "precious" if it were common! This means that the metal must be malleable, that it can be bent, hammered, or otherwise shaped. Two other characteristics are also important. There are also many gemstones that are not true minerals, but which are gemstone varieties of recognized minerals.