Romeu Bettencourt's jewellery is produced in sterling silver, or in 19.2 karat yellow gold. Some pieces can also be produced in white gold or pink gold.
What is the difference between sterling silver and fine silver?
Fine silver or silver in its pure form (99.9%) is very soft, and as a result, it can be easily damaged. Sterling silver is constituted by a fusion of fine silver with a small amount of copper, a ratio of 92.5% fine silver and 7.5% copper. Thus it is possible to make it stronger and more durable.
What is gold karat?
Karat (k) is the unit used to reveal the purity or the amount of pure gold in a piece:
- 24 karat gold (24k) is designated as gold in its pure state.
- 19.2 karat gold (19.2k) is designated as Portuguese gold and contains 80% of fine gold in alloy. The remaining countries produce gold with 18 karat, composed of 75% fine gold in alloy.
- 14 karat gold (14K) is composed of 58.3% of fine gold in alloy.
- 9 karat gold is the most lower gold alloy, composed of 37,5% fine gold in alloy.
The higher the proportion of gold used in alloy, more valuable will the jewel be.
The price of a piece is calculated using the value of the material, the work involved, the qualifications of the creator, and the complexity of the project.
All silver pieces undergo a rhodium plating process so as not to oxidize nor undergo changes in pitch when the material is in contact with acids produced by skin, moisture or any chemical product. The pieces are therefore protected aesthetically.