Gold alloys used in South Africa
Most gold jewellery sold in South Africa is 9ct or 18ct, both alloyed with other metals for durability. 18ct is 75% pure gold and softer but richer in colour. 9ct is more durable against scratches due to its higher alloy content. Both are hallmarked under South African standards. Yellow gold requires no plating. White gold is alloyed with palladium or nickel and usually rhodium-plated to achieve its white finish. Rose gold uses copper for its warm tone.
Diamond settings used in bands
Channel settings protect diamonds along the inside of a metal channel and are well-suited for daily wear. Pavé and micro-pavé use small prongs or beads and are more delicate but deliver a continuous sparkle effect. Bezel settings fully surround each stone and are the most protective option. For a band that takes hard wear, channel or bezel tends to last better.
Quality of diamonds in bands
Band diamonds are generally smaller stones, often from 0.01ct to 0.10ct each. The grading standards still apply. For channel-set or pavé bands, consistency of colour and clarity across all stones is what gives the band a clean, matched appearance. Ask whether the diamonds are certified and whether the band carries documentation.
Sourcing through a specialist
Prodiam at Suite F1W6, The Paragon, 1 Kramer Road, Bedfordview, Johannesburg, works with certified natural diamonds and can discuss band options or source specific stones. Contact the Prodiam team or call +27 74 702 1976.
Decision table
Use the details, not a shortcut.
| Metal | Colour stability | Scratch resistance | Needs re-plating |
|---|---|---|---|
| Yellow gold 18ct | Stable, no plating | Moderate | No |
| Yellow gold 9ct | Stable, no plating | Good | No |
| White gold | Rhodium fades over time | Moderate | Yes, every 1-3 years |
| Rose gold | Stable, no plating | Moderate | No |
| Platinum | Stable, develops patina | Scratches but no metal loss | No |
Direct answers
Common questions
Is 9ct or 18ct gold better for a wedding band?
9ct is harder and more scratch-resistant. 18ct is richer in colour and gold content. Both are suitable for daily wear and both are real gold.
How many diamonds are typical in a diamond wedding band?
It depends on the ring size and setting style. Full eternity bands have diamonds all the way round. Half eternity bands cover the top portion. Both vary in total carat weight from around 0.25ct to over 1.00ct total.
Do I need a certificate for band diamonds?
Individual band diamonds are usually too small for individual GIA certificates, but the ring should carry a manufacturer's description or inspection report from the retailer.
Can a gold diamond band be resized?
Yellow and rose gold bands can usually be resized. Full eternity bands with channel-set diamonds all the way round are more complex and sometimes cannot be resized. Check before purchase.
Where can I buy a gold diamond wedding band in Johannesburg?
Contact Prodiam at the Prodiam team or visit The Paragon, Bedfordview, to discuss certified natural diamond band options.