What Does Carat Really Mean? Understanding Diamond Weight
Carat is one of the most well-known terms in the world of diamonds — but it’s also one of the most misunderstood. Many people assume carat refers to the size of a diamond, when in fact, it’s a measurement of weight. Understanding what carat really means can help you make smarter choices when shopping for a diamond, especially if you’re looking to balance size, sparkle, and budget.
So, what is a carat?
A carat (ct) is a unit of weight used to measure diamonds and other gemstones. One carat equals 0.2 grams, or about the weight of a paperclip. Diamonds can range from a fraction of a carat to several carats in weight.
You’ll often see carat weight written in decimals (e.g., 0.50ct for half a carat) or in points, where 100 points = 1 carat. So a 0.25ct diamond may also be referred to as a “25-pointer.”
Carat vs. size
While weight does affect size, two diamonds with the same carat weight may appear differently in size due to their shape, depth, and how they’re cut. For example, a well-cut diamond will reflect more light and appear larger than a poorly cut one of the same carat weight.
If you’re shopping on a budget, consider shapes like oval, pear, or marquise — they tend to look larger per carat compared to round or princess cuts.
Carat and price
Diamond prices increase exponentially with carat weight. A 1.00ct diamond may cost significantly more than a 0.90ct one, even if the size difference is barely noticeable. That’s why many people opt for just under the ‘milestone’ weights (like 0.95ct instead of 1.00ct) to maximise value.
Getting more carat for your money
To make your budget go further, consider choosing a design that enhances the appearance of your diamond. Halo and cluster settings, for example, surround the centre stone with smaller diamonds, creating the illusion of a much larger, more dazzling piece without the higher price tag of a single large stone. These styles not only maximise sparkle but also add depth and detail, giving you a luxurious look at a more accessible price point.
Other tips:
- Prioritising excellent cut quality can also make a diamond appear larger and more brilliant than a poorly cut stone with a higher carat weight.
- And don’t forget, lab-grown diamonds offer impressive value, giving you more carat for your money without compromising on beauty or sparkle!
Find your perfect piece
Browse all of our beautiful diamond jewellery here. If you have any questions about diamond carat (or anything else!), feel free to get in touch with our team of experts, who would be happy to help you.
