Guide · karats compared
21K vs 18K Gold: Which Is Better?
Purity, value, durability and which karat to choose — with today's live prices.
Today's gold price: 24K ₱8,142.06/g · 21K ₱7,124.30/g · 18K ₱6,106.54/g — see live prices →
21K vs 18K gold: what's the difference?
The number is the purity. 21K is 87.5% gold; 18K is 75% gold. So 21K contains more actual gold per gram and is worth more — compare the live rates above. The rest of the alloy is metals like copper and silver that add strength and colour.
Value
Gram for gram, 21K is worth about 17% more than 18K (87.5 ÷ 75). For the same design, a 21K piece costs more and holds more resale value.
Durability and colour
18K is harder and more scratch-resistant because it has more alloy, so it suits rings and pieces worn daily. 21K is softer and a richer yellow, prized for its colour and gold content.
Which should you buy?
- For value and resale — 21K (or higher). It's why OFWs favour 21K Saudi and Dubai gold.
- For everyday durability — 18K, especially for rings and branded jewelry.
- For pure investment — skip jewelry and buy 24K bullion.
See live 21K and 18K prices, or value a specific piece with the calculator.
21K vs 18K gold — frequently asked questions
Is 21K better than 18K gold?
21K has more gold (87.5% vs 75%), so it's worth more and a richer colour. 18K is harder and more durable. Which is 'better' depends on whether you want value or everyday toughness.
Which holds its value better, 21K or 18K?
21K, because it contains more gold per gram. Its resale and pawn value is higher for the same weight.
Why is 21K gold so common in the Philippines?
Much of it comes from Saudi Arabia and Dubai, where 21K is the standard, brought home by OFWs. It balances high gold content with wearability.
Is 18K real gold?
Yes. 18K is 75% pure gold, alloyed with other metals for strength. It's genuine gold, just not pure like 24K.