Scroll through Mirea and you'll notice most pieces are 18k gold-plated, while the 24K Signature Collection stands apart. If you've wondered what that number actually means — or whether it's worth paying more for — here's the real answer, not the marketing version.
What "18K" and "24K" Actually Mean
Gold purity is measured in karats, out of a possible 24. 24K is pure gold. 18K is 75% gold mixed with other metals (usually copper, silver, or zinc) for added strength.
This applies to plating too — it describes the purity of the gold layer coating the base metal, not the base metal itself. On Mirea pieces, that base is always stainless steel, whether the plating on top is 18K or 24K.
The Actual Differences
Colour. 24K gold has a warmer, richer, slightly deeper yellow tone. 18K is a touch lighter and slightly more versatile — it reads as "gold" without leaning as orange or antique.
Durability. This is the counterintuitive part: 18K plating is usually more scratch- and wear-resistant than 24K. Pure gold (24K) is a softer metal, so a 24K-plated surface can show fine wear slightly sooner with heavy daily friction — think keys in the same pocket as a ring, or a bracelet that knocks against a desk all day.
Look and occasion. 18K reads as everyday, versatile gold — the kind you don't think twice about wearing to work, the gym, or a wedding. 24K has a deeper, more "statement" gold tone that tends to suit dressier or more traditional pieces, closer to what you'd expect from fine gold jewelry.
So Which Should You Buy?
Go with 18K if: you want a piece for daily wear — gym, work, sleep-in-it territory. It's the more practical choice for jewelry that rarely comes off, which is most of what people actually buy demi-fine jewelry for.
Go with 24K if: you want something closer to how traditional gold jewelry looks and feels, for occasions where you want that richer tone — festive wear, gifting, or pieces you're treating a little more like an investment piece than an everyday basic.
Neither is "better" — they're suited to different jobs. A lot of people end up owning both: an 18K everyday stack, and a 24K piece or two saved for when they want that warmer, more traditional gold look.
Both Are Still Anti-Tarnish and Waterproof
Whichever karat you choose, every Mirea piece — 18K or 24K — sits on the same anti-tarnish, waterproof stainless steel base. The karat changes the tone and finish of the gold layer, not the piece's durability against water, sweat, or everyday wear.
Browse the everyday 18K edit or the 24K Signature Collection and pick based on how you'll actually wear it — not just what looks best in the product photo.