Select Page


‘Carat Weight’

What is Carat Weight?


As the ‘Diamond Carat Weight Chart’ above shows, the term ‘carat’ actually refers to the weight of the diamond. This term comes from the days when early gem traders would use carob seeds (as they were generally very uniform in weight) as the counterweights in their balance scales. The modern metric ‘carat’ weight was introduced in 1913 to create a universally accepted weigh of measuring diamonds. The traditional unit of measure, One Carat, is approximately 0.2 grams. A carat is divided into 100 points, just like there are 100 pennies in £1.  A point is equal to 1/100 of a carat, therefore a 75-point diamond equals 0.75 carat. Due to its weight and size, the larger the diamond, the rarer and more valuable it tends to be. Diamonds of equal weight may appear slightly different in size, depending on their depth and proportions as evidenced in the picture below.



If you need any further information on any of The Four C’s or Diamond Carat Weight knowledge; get in touch with one of our consultants, who are more than willing and ready to help.


More Like This

Discover how our rings are more bespoke, use higher spec diamonds... but for a lower price

Get inspired by our past work and design concepts - all designed from scratch.

Independently rated 9.8/10 - read how we've made that special moment just that little bit extra special.

“They created magic from just one photo. An utterly unique design.”

“Fantastic service from Natalie from the initial design consultation to receiving our amazing ring at the end of the process.”

“A big thank you to all at Durham Rose and I look forward to future business, designing a wedding band that will complement such a beautiful engagement ring”

“We wouldn’t hesitate to recommend Durham Rose, especially Melissa, to everyone we know.”

“What Faye designed was nothing short of spectacular. The design truly did capture everything I wanted.”

Get in touch with one of our incredible ring designers

Our team and their wealth of experience will seamlessly guide you through the design process and create a unique, one off timeless piece of jewellery.