Why Solid 18k Gold?
- 75% pure gold — the finest standard for fine jewelry
- Hypoallergenic and nickel-free
- Officially certified by INCM
- Exceptional durability and lasting brilliance
- Lightweight and comfortable for all-day wear
- Designed and handmade in Portugal
Style it your way
Whether layered with silver or worn alone as a statement, our 18k gold pieces are made to elevate any look — from morning to evening, every day of the year. Discover your next CINCO treasure.
Frequently Asked Questions
What does 18k gold mean?
18k gold means the piece is made of 75% pure gold, mixed with other metals for strength and durability. It is the international standard for fine jewelry and offers the perfect balance between purity and wearability.
Is CINCO 18k gold jewelry hypoallergenic?
Yes. All our solid 18k gold pieces are hypoallergenic and nickel-free, making them ideal for sensitive skin and safe for everyday wear.
Are CINCO pieces certified?
Yes. All CINCO jewelry is officially certified by INCM (Imprensa Nacional Casa da Moeda), guaranteeing the authenticity and quality of our gold.
How is 18k gold different from gold-plated?
Unlike gold-plated jewelry, solid 18k gold does not fade or tarnish over time. It is a lifetime investment — a piece you can wear daily and keep forever.
How do I care for my 18k gold jewelry?
18k gold is very low maintenance. Simply avoid harsh chemicals and store in a dry place. A soft cloth is all you need to restore its natural shine. Visit our Jewelry Care Guide for full instructions.
How long does delivery take?
Orders are prepared within 3–5 business days. Once shipped, you will receive a tracking email. We offer free worldwide shipping on all orders over €150.
