A metallic chemical element with the symbol Au and the atomic number of 47.
Gold is the most malleable of all metals. One gram can be hammered into 1 square meter and one ounce can be pounded into 300 square feet.
Chemically, it is unaffected by air, moisture and most corrosive reagents.
Gold standards have been the most common basis for monetary policies since early history only replaced by flat currency during the 20th century.
Gold has been highly sought after for jewelry making since the beginning of history.
In medieval times, gold was believed to be beneficial to one's health.
It can symbolize power, wealth, strength, happiness, warmth, love, hope, optimism, justice, balance, summer, sun and harvest.
24 karat gold (24K) is pure gold.
22 karat gold (22K) is 22 parts gold and 2 parts another metal or metals, making it 91% gold.
18 karat gold (18K) is 18 parts gold and 4 parts another metal or metals, making it 75% gold.
14 karat gold (14K) is 14 parts gold and 10 parts another metal or metals, making it 58.3% gold.
10 karat gold (10K) is 10 parts gold and 14 parts another metal or metals, making it 41.7% gold. This is the minimum karat designation for a metal to be called gold in the US.
Base metals often alloyed with gold to make it harder include silver, copper or palladium.
White gold is an alloy of another white metal (like nickel or palladium) with gold. Its purity is signified in karats in the same manner of yellow gold.To maintain and / or enhance the white color of this gold, it is often plated with rhodium, a shiny white metal with extreme hardness. This coating, however, does wear off in time revealing the original color of the white gold.
rose / pink gold:
This gold has a pinkish-rose color and is an alloy of gold and other metals - usually copper. The highest karat weight for rose gold is 22K and is referred to as crown gold. The higher the percentage of copper, the more intense the rose / pink / red tone will be. Eighteen karat rose gold is 75% gold and 25% copper.
The green tone appears when copper is left out of the alloy and is, instead, a mixture of gold and silver. Cadmium can also be added to intensify the green color.
Silver is a metallic element with the chemical symbol Ag and the atomic number 47.
Sterling silver is an alloy of 92.5% silver and 7.5% other metals, usually copper. It is often stamped with the numbers 925. In order for something to be considered silver, it must be at least 90% silver and 10% of another metal. This alloy is stamped with 900. Fine silver (99.9% silver) is far too soft for jewelry, but can often be used as a decorative element in silver pieces.
It is much less expensive than gold, but used just as frequently in making jewelry.
Silver often symbolizes purity, clarity, awareness, focus and persistence. It is also associated with the moon and female energy.