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October 7, 2025 · Jamie Yoshida · 3 min read

Carat vs. Karat Explained

The Bead Gallery, Honolulu Blog-Carat vs. Karat: The Simple Explanation You Need-The Bead Gallery Honolulu | Maelify
5-Carat Gemstone Image

From the Counter: "I'm Looking for a 5-Carat Gemstone..."

When the phone rings at The Bead Gallery, magic often begins. Recently, our team member Danton received a curious question: "Hi, I'm looking for a gemstone bead, something around 5 carats. How much would that be?"

It was an "aha!" moment—highlighting a beautiful intersection of curiosity and education. It also inspired this blog post about two of the most misunderstood terms in jewelry making: carat and karat.

If you’ve ever wondered about these terms, you’re not alone—and we’ve got you covered!

Carat vs Karat: Know the Difference

Carats measure the weight of gemstones.
Karats measure the purity of gold.

What is a Carat (ct)?

1 carat = 0.2 grams. So a 5-carat stone weighs 1 gram.

But here's the twist: weight isn’t everything. The value of a gemstone also depends on its color, clarity, and cut. A sparkling 2-carat gem can outshine a dull 5-carat one in both beauty and price.

Why We Sell by Millimeters, Not Carats

At The Bead Gallery, we focus on size and consistency:

  • Millimeter size: Helps you design with precision.
  • Strand pricing: Based on quality, cut, and craftsmanship.
  • Design usability: What looks and feels right in your hand.

What is a Karat (k)?

Karat indicates gold purity—measured in 24 parts:

  • 24k Gold: 100% pure, but soft and less durable.
  • 18k Gold: 75% pure—luxurious yet more wear-resistant.
  • 14k Gold: 58.3% pure—the sweet spot for strength and color.

For jewelry findings, we love 14k for its balance of beauty and durability!

Takeaway Tips for Your Next Jewelry Project

  • Carat = gemstone weight. We translate that into millimeters for practical sizing.
  • Karat = gold purity. Look for 14k for reliable components.

Still curious? Don’t hesitate to ask us anything—your questions inspire what we create and share!

With sparkles and aloha,
The Bead Gallery, Honolulu