A Guide to Precious Metals for Your Bespoke Ring

A gemstone may be the centrepiece, but the metal holds it securely, takes the knocks of everyday life, and quietly shapes the entire character of the ring. As bespoke jewellers based in Pretoria East, here is what each metal is actually made of, and how to choose one that suits how you live.

Understanding Karats, Not Just Colour

Gold in its pure, 24-karat form is too soft for daily-wear jewellery, so it is alloyed with other metals to add strength. The karat number simply describes what fraction of the alloy is pure gold, out of a total of 24 parts.

The remainder is made up of metals such as copper, silver or palladium. The higher the karat, the richer and warmer the colour, but also the softer the metal, which is part of why most fine jewellery settles between 14k and 18k as a balance of richness and durability.

Platinum: Density and Quiet Strength

Platinum is a naturally white metal, used at a high purity (typically around 95%), which gives it exceptional density and durability without needing rhodium plating to stay bright. It is naturally hypoallergenic, resists tarnish, and develops a soft patina over years of wear rather than losing its shine outright.

The trade-off is weight and cost: platinum is denser and generally more expensive than gold, which is exactly why it suits people who want a low-maintenance metal built to outlast generations.

Yellow Gold: Warmth With History

Yellow gold has carried the weight of tradition in engagement and wedding jewellery for centuries, and an 18k yellow gold ring carries a noticeably richer, warmer tone than a 14k or 9k piece, simply because it contains more pure gold relative to alloy.

It suits warmer skin tones particularly well and, because it is not plated, the colour does not fade or require maintenance over time the way rhodium-plated white metals can.

Rose Gold: A Modern, Romantic Alternative

Rose gold gets its blush tone from a higher proportion of copper in the alloy, which also makes it slightly more durable than pure yellow gold at the same karat. It tends to flatter a wide range of skin tones and has become a popular choice for couples seeking something a little less traditional.

White Gold: Brightness on a Budget

White gold achieves its silvery-white finish through rhodium plating over a gold-and-alloy base, giving it a look similar to platinum at a more accessible price point.

The trade-off is maintenance: rhodium plating wears down gradually with daily use and will need to be professionally reapplied every few years to keep the bright, white finish looking fresh.