Precious Metal Guide
The metal you choose defines not only how it looks, but also how it performs over time. At RCMJ, we work with meticulously selected precious metals engineered for longevity, crafted using high-purity alloys, such as 95% platinum and 18-carat gold (75% pure gold) to ensure strength, stability, and refined finish. Each piece is designed to withstand daily wear while maintaining comfort, structural integrity, and lasting elegance for years to come.
Gold
- Yellow Gold: Crafted most commonly in 18-carat purity (75% pure gold), yellow gold is prized for its natural warmth, rich hue and colour stability.
- White Gold: Typically made in 18-carat purity (75% gold blended with palladium) and finished with a micron-thin rhodium plating.
- Rose Gold: Soft pink in tone with romantic appeal, rose gold is created by blending gold with approximately 20-25% copper, achieving its distinctive blush colour while offering greater hardness than yellow gold.
Platinum
Platinum is one of the rarest and most durable precious metals
- One of the rarest and most durable precious metals used in fine jewellery naturally white in colour and does not fade or require replating.
- Typically 95% pure in jewellery, making it highly hyporallergenic and suitable for sensitivity. Its strength ensures hold diamonds are firmly over time.
- Around 30 times rarer than gold, with global production of only 180-200 tonnes per year.


Metal Durability & Wear
- Gold is a naturally non-reactive metal, meaning it does not rust or tarnish; properly alloyed gold jewellery can maintain its lustre for decades with minimal maintenance.
- Jewellery-grade gold (such as 18K and 14K) balances beauty and strength, with hardness levels ranging from 120-200 HV, making it suitable for wear.
- All pieces are officially hallmarked, certifying metal purity and compliance with recognised industry standards.
Choosing The Right Metal
Your lifestyle plays an important role in selecting the right metal.
- Active lifestyles may prefer platinum, as it is up to 40% denser than gold, offering superior strength and resistance to wear.
- Classic tastes commonly lean towards yellow gold, which has remained one of the most popular jeweller’s metals for over 5,000 years due to its appeal.
- Modern and contemporary styles pair well with white or rose gold metals, complementing all skin tones.


Finish & Craftsmanship
RCMJ metals are finished with exceptional attention to detail.
- 3D CAD Precision: 100% of our custom designs begin with 3D modelling for exact precision and digital preview.
- Expert Artistry: Our pieces are handcrafted by seasoned bench jewellers with decades of collective experience.
- Rigorous Quality Control: Each ring undergoes repeated quality checks focusing on symmetry, polish, and stone security.
Metal Philosophy
- Authentication & Hallmarking: Every piece carries official certification, guaranteeing the metal’s authenticity and long-term value.
- Hypoallergic Excellence: Our platinum and gold alloys are naturally hypoallergic, making them the safest choice for clients with sensitive skin.
- Sustainably Sourced Materials: Every piece is crafted using ethically sourced metals and conflict-free diamonds, ensuring that your heirloom represents both beauty and responsible global standards.

START DESIGNING WITH US
At Robert Cliff Master Jewellers, we blend craftsmanship with personal expression — from classic solitaires to bespoke wedding sets you won’t find anywhere else. Every ring tells a story — let us help you design yours.
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