Types of Gold

Arabel Lebrusan uses recycled, or Fairtrade precious metals and stones sourced with transparency through the supply chain. We use recycled gold of at least 18 carats. We also use 100% recycled 925 sterling silver. All our sourced diamonds above 0.3 carats are from Canadian origin. Some of our jewellery has gold and/ or rhodium plating for durability, shine and finish.

You will find detailed descriptions of the creation process and materials used on the individual website pages for each item in our collections.


Our fine metals

What is a carat?

The word carat is derived from the Greek kerátiōn which means “fruit of the carob.” Carob seeds have traditionally been used as weights for scales because of their reputation for having a uniform weight. In the mid-16th century, the carat was adopted as a measure of gold purity, and as a measure of diamond weight from 1575.

Carat is used as a system of denoting the purity of platinum, gold and silver alloys. Because of the softness of pure gold, silver and platinum, these fine metals are usually alloyed with base metals for use in jewellery to improve hardness, colour and other properties.


Fine gold is 24 carat. Gold with lower caratage, typically 18ct or 9ct, contains higher percentages of copper, silver or other base metals. We only use 18ct gold or higher in our jewellery. We mix our fine gold with different alloys to create colours from yellow to rose and white.


In the 18th century, platinum's rarity made King Louis XV of France declare it the only metal fit for a king and since then it has remained a symbol of prestige. Platinum is 1.4 times the weight of gold and its higher density makes it very durable. It has a naturally white colour and therefore is not susceptible to tarnish.

Sterling Silver

The word "sterling" has described high-quality silver since the 13th century. Sterling silver is extremely malleable. It can be hammered into sheets so thin that it would take 100,000 to stack an inch high. It can be drawn into a wire finer than a human hair. Sterling silver is even harder than gold and can be highly polished.

Gold and rhodium plating, oxidised silver

Gold and rhodium plating is a process of depositing a thin layer of gold or rhodium onto the surface of another metal, by chemical or electrochemical method. Oxidising silver is a chemical process. Jewellery customised though these processes is susceptible to wear but if looked after correctly, the finish can last many years. 

Some of our designs are rhodium plated for a whiter or a blacker finish. We also use oxidised silver for a blackened colour.