Gold Knowledge 金飾教學
Gold is resistant to rust, tarnish, and corrosion; however, it is as well the most malleable of all precious metals.Therefore, gold is often alloyed with a mixture of metals like silver, copper, nickel, and zinc to give it strength and durability.
Karatage (K) indicates purity, or how much of the metal in a piece of jewelry is gold.
Karatage is expressed in 24ths, making 24k gold, 100% gold (too soft for fine jewelry).18k gold is composed of 75% gold, which is alloyed with other metals to make it strong enough for everyday wear (ideal for fine jewelry).
14k gold is composed of 58.3% gold and 41.7% of other metals.
*Calissa Jewelry offers only 18K Gold jewelry, which we believe provides the best condition for setting our jewelries.
The color of gold is determined by two factors:
- The type of metal alloys included
- The percentage of each metal alloy
The appealing silvery white character of white gold jewelry is combined with metal alloys that are white in nature and plated with an extremely hard element called rhodium. Yet, rhodium may wear away over time; nonetheless, replating can be done to restore its whiteness and shininess to your jewelry.
Rose gold jewelry has become the latest jewelry trend. Its beautiful pink hue is created by using copper alloy in its metal mixture (given that the % of gold is still the same, the only difference between white gold and rose gold is only the element used in the mixture).
Natural gold and colour-saturated alloys are what give yellow gold jewelry its rich shine. The alloys most commonly used, are copper with a red hue, and silver featuring a green hue. An expert mixture of copper, silver and pure gold gives this precious metal its signature warmth.
Gold should be cleaned regularly in order to maintain its beauty and patina.
However As a relatively delicate material, gold is particularly susceptible to damage from chlorine. Chlorine can permanently damage or discolor gold jewelry.
Thus, we would recommend you to
1) avoid wearing your gold jewelry when using chemicals or while in a pool or hot tub in order to avoid daily abrasions and prolong the luster.
2) When not worn, store them in soft cloth bags or the jewelry box to protect them from the elements of daily exposure.
To clean gold jewellery, use a solution of warm water and detergent-free soap with a soft-bristled brush.