The Odyssey of Gold
Centuries ago ancient Greek poet Homer mentions gold as “The glory of immortals and as a sign of wealth among ordinary human beings”. This statement holds good even in the current day.
Gold has been a major investment an average Indian chooses over many other avenues. It boasts its origin to approximately 75,000years in central and Eastern Europe. Gold has been carved in different patterns from bracelets to girdles, from earrings to brooches, from necklaces to head ornaments. Early 1500 BC, people of Indus valley civilization started creating gold earrings, beads and bangles. Over the years gold underwent remarkable changes in terms of the colour, finish, texture and purity.
Gold has never been bounded to a specific region; it has been omnipresent through generations of Gandhara period, Greeks, Romans, Egyptians, Indus valley civilization. It has always been a medium of exchange before the currency.
Science Behind Gold
A noble Yellow metal, gold is known as “AURUM” in Italian. As a metal gold is hard, malleable and available in different colors. In order to make gold more malleable, it is combined with a host of alloys to make it ready for various kinds of jewellery. The various alloys used are:
A definite proportion of alloys are mixed to gold to get desired characteristics. Also alloys alter the color, temper, hardness and annealing characteristics of gold. Following are the changes gold undergoes when mixed with alloys.
- The proportion of silver is increased to change the yellow to white.
- Redder in appearance as the proportion of copper increases.
- Zinc a decolorizer converts some red gold into a more yellowish tone by substitute of zinc.