Karat vs carat
08 Sep 2025

Karat vs Carat: Complete Guide to Understanding Gold & Gemstone

If you’ve ever browsed jewellery online or in-store, you’ve probably come across the terms karat (K) and carat (Ct). At first glance, they look like the same word with different spellings, but they mean completely different things in the jewellery world. Misunderstanding these terms can lead to confusion when choosing between gold and gemstone jewellery.

That’s why in this post, we’ll break down karat vs carat in simple terms, explore their significance, and show you why KYMEE’s 18K Gold Vermeil Jewellery for women is the perfect way to enjoy luxury without overspending.

What Does Karat Mean in Gold?

In the context of gold, karat (abbreviated as K or kt) is a measure of the purity of gold. It tells you how much of the gold is pure in a piece of jewellery or an item. The karat system is based on a scale from 1 to 24, with 24 karat (24K) being considered pure gold.

History of the Karat System

The word karat comes from the Arabic qīrāṭ and the Greek kerátion, which originally referred to the carob seed used as a standard for measuring weight. Over time, it evolved into a system to measure gold purity.

How Karat Determines Gold Purity (10K, 14K, 18K, 24K)

  • 10K Gold (41.7% gold): Durable but less yellow, more alloy metals.
  • 14K Gold (58.3% gold): Popular in the U.S., good balance between durability and shine.
  • 18K Gold (75% gold): Rich colour, perfect balance of luxury and strength.
  • 24K Gold (99.9% gold): Pure gold, soft and prone to scratches, not ideal for daily wear.

The higher the karat number, the purer the gold, but the more it may be prone to scratches or bending since gold is a relatively soft metal. Lower karat gold, like 10K or 14K, tends to be more durable because it's mixed with stronger metals like copper or silver.

The Beauty of 18K Gold Vermeil Jewellery for Women

For women who love gold jewellery that radiates elegance without the heavy price tag, KYMEE’s 18K Gold Vermeil Jewellery is a standout choice. Vermeil refers to a thick layer of 18K gold plated over sterling silver, offering both luxury and affordability. Unlike standard gold-plated pieces, gold vermeil is more durable and retains its shine longer, making it ideal for everyday sophistication.

What Does Carat Mean in Gemstones?

Carat as a Weight Measurement

Carat is used to measure gemstone weight, not purity. One carat equals 200 milligrams (0.2 grams).

Carat vs Size: Why Bigger Isn’t Always Better

A gemstone’s cut and clarity can influence its appearance more than carat weight. A 1-carat diamond with excellent cut may look brighter and more stunning than a poorly cut 2-carat stone.

Carat’s Role in Diamond Pricing

Gemstone pricing often increases with carat weight, but other factors, like brilliance and craftsmanship, also play a vital role.

Karat vs Carat: Key Differences

Feature Karat (K) Carat (ct)
Definition A unit of measurement for the purity of gold. A unit of weight measurement for gemstones, particularly diamonds.
Used for Gold and other precious metals. Gemstones, mainly diamonds.
Unit One karat (1K) is 1/24th of the total weight of the alloy. One carat is equivalent to 200 milligrams or 0.2 grams.
Measurement System Percentage of pure gold in the alloy (e.g., 24K gold is pure gold). Measures the weight of gemstones.
Value Representation Higher karat = higher purity (e.g., 18K gold is 75% pure). Higher carat = larger or heavier gemstone (e.g., 1-carat diamond).
Common Uses Gold jewellery (e.g., 14K, 18K, 24K). Diamond jewellery (e.g., 1ct, 2ct, etc.).
Impact on Value The higher the karat, the more valuable (pure gold is more expensive). Larger carat weight typically means higher value (for diamonds, etc.).
Visual Difference No direct visual difference, but higher karat gold tends to be softer. Larger carat stones are more noticeable (e.g., a 2ct diamond looks much bigger than a 1ct).
Abbreviation K or kt (e.g., 24K for pure gold). ct (e.g., 1ct diamond).

Why 18K Gold Vermeil is the Perfect Choice for Women

Durability and Luxury of Gold Vermeil

18K gold vermeil offers the glow of fine jewellery with improved durability, making it resistant to tarnishing and everyday wear.

Affordable Elegance with KYMEE Jewellery

KYMEE has redefined modern luxury with 18K Gold Vermeil Jewellery for women. The collection blends affordability, quality, and timeless beauty, making it an excellent choice for women who want style without compromise.

Styling Tips for 18K Gold Vermeil Pieces

  • Pair delicate 18K gold vermeil necklaces with gemstone rings for a chic look.
  • Stack vermeil bracelets with diamond or cubic zirconia bangles.
  • Choose statement vermeil earrings for formal occasions.

How to Choose Between Karat Gold and Carat Gemstones

Matching Gold Purity with Gemstone Weight

A fine gemstone deserves a luxurious setting, which is why 18K gold is often paired with high-carat diamonds and sapphires.

Everyday Wear vs Special Occasions

  • For everyday wear, 14K or 18K gold vermeil is practical and stylish.
  • For special events, gemstones with higher carats add glamour.

Investment vs Fashion Jewellery

Solid gold may be seen as an investment, while 18K gold vermeil offers affordable fashion without compromising on looks.

Conclusion

Understanding karat vs carat empowers you to make smarter jewellery decisions. While karat defines gold purity and carat measures gemstone weight, both play vital roles in how jewellery is valued.

For women who want elegance, durability, and affordability, KYMEE’s 18K Gold Vermeil Jewellery strikes the perfect balance. With its luxurious glow and modern designs, it’s an investment in both style and confidence.

Whether you’re shopping for yourself or looking for the perfect gift, remember this: true beauty lies in the details, and KYMEE ensures you sparkle every day.

FAQs

1. Is karat the same as carat?
No, karat measures gold purity, while carat measures gemstone weight.

2. Which is better: 18K gold or 24K gold?
18K is more durable and ideal for jewellery, while 24K is pure but soft.

3. Does a higher carat mean a bigger gemstone?
Not always. Cut, clarity, and shape affect how big a stone looks.

4. Is 18K gold vermeil good quality?
Yes, vermeil uses a thick layer of 18K gold over sterling silver, making it higher quality than regular gold-plated jewellery.

5. Can you wear 18K gold vermeil daily?
Absolutely! With proper care, it lasts long and resists tarnishing.

6. Why should you choose KYMEE Jewellery?
KYMEE offers affordable luxury, timeless designs, and high-quality 18K gold vermeil jewellery for women, making it perfect for any wardrobe.

7. What is a Karat?

A unit that measures the purity of gold.

  • 24K = pure gold
  • 18K = 75% gold, 25% other metals

8. What is a Carat?
A unit that measures the weight of gemstones like diamonds.

  • 1 carat = 0.2 grams