At Rudolf Heltzel, every piece of jewellery is crafted using carefully sourced precious metals selected for their quality, durability and ethical origin. We work exclusively with C.Hafner, one of Europe’s leading precious metal refiners, ensuring full traceability, sustainability and exceptional material standards.
Our Commitment to Ethical Sourcing
C.Hafner has been refining precious metals since 1850 and is recognised for its advanced technology, environmental standards and responsible sourcing policies. Their approach is built on:
- 100% recycled precious metals (urban mining), reducing the need for newly mined materials
- CO₂-neutral gold production, lowering environmental impact
- Full supply chain transparency, with strict due diligence and traceability
- Compliance with global standards, including Responsible Jewellery Council (RJC) and LBMA certification
- Conflict-free materials, with emphasis on social responsibility and ethical practice
By working with recycled gold and platinum from controlled sources, these metals are guaranteed to be free from newly mined material associated with environmental or social harm.
A Closed-Loop Approach to Precious Metals
All metals are part of a continuous recycling cycle. Existing gold, platinum and silver are refined, purified and reintroduced into production without loss of quality. This process ensures:
- No depletion of natural resources
- Reduced environmental impact compared to mining
- Consistent purity and performance in jewellery
Precious Metals We Use
We work primarily in high-quality gold alloys and platinum, selected for their strength, colour and suitability for engagement rings, wedding rings and fine jewellery.
18ct Yellow Gold
A classic choice for engagement rings and wedding bands, 18ct yellow gold contains 75% pure gold.
- Rich, warm colour
- Traditional and timeless appearance
- Durable for everyday wear
- Suitable for all skin tones
Yellow gold remains one of the most popular metals for fine jewellery in Ireland due to its heritage and longevity.
18ct White Gold
18ct white gold is alloyed to achieve a bright, neutral tone. It’s characterised by its clean, contemporary appearance.
- Enhances the brilliance of diamonds
- Popular for engagement rings
- Strong and suitable for daily wear
White gold offers a similar look to platinum with a slightly lighter weight.
18ct Rose Gold
Rose gold combines gold with copper alloys to create a soft pink tone.
- Warm, distinctive colour
- Complements a wide range of skin tones
- Increasingly popular for modern engagement rings
- Durable due to alloy composition
It offers a more individual alternative while maintaining the same gold purity.
.950 Platinum
Platinum is one of the most durable and dense precious metals used in jewellery.
- 95% pure platinum
- Naturally bright and cool-toned
- Highly resistant to wear
- Ideal for securing diamonds
Platinum is particularly suited to engagement rings and wedding bands due to its strength and longevity.
Why Metal Choice Matters
The choice of metal affects not only the appearance of a piece but also its durability, weight and how it wears over time. For engagement rings and wedding rings worn daily, we guide you in selecting the most appropriate metal based on:
- Lifestyle and wear
- Design and setting
- Skin tone and personal preference
- Long-term maintenance
Jewellery Craftsmanship in Ireland
All metals supplied by C.Hafner are shaped and finished in our Kilkenny workshop using traditional goldsmithing techniques. This combination of ethical sourcing and Irish craftsmanship ensures every piece meets the highest standards of quality, sustainability and design.