Diamond Size Charts

Round MM Size	Round Carat Weight
4 mm	0.25 ct
5.0 mm	0.50 ct
5.75 mm	0.75 ct
6.5 mm	1.00 ct
6.8 mm	1.25 ct
7.3 mm	1.50 ct
7.75 m	1.75 ct
8 mm	2.00 ct
8.7 mm	2.50 ct
9.1 mm	3.00 ct
9.75 mm	3.50 ct
10.25 mm	4.00 ct
10.75 mm	4.50 ct
11 mm	5.00 ct

Round MM Size	Round Carat Weight
0.8 mm	0.0025 ct
1 mm	0.005 ct
1.1 mm	0.0067 ct
1.2 mm	0.009 ct
1.25 mm	0.01 ct
1.3 mm	0.01 ct
1.5 mm	0.015 ct
1.75 mm	0.02 ct
1.8 mm	0.025 ct
2 mm	0.03 ct
2.2 mm	0.04 ct
2.5 mm	0.06 ct
2.75 mm	0.08 ct
3 mm	0.10 ct
3.25 mm	0.14 ct
3.5 mm	0.17 ct
3.75 mm	0.21 ct
4 mm	0.25 ct
4.25 mm	0.28 ct
4.5 mm	0.36 ct
4.75 mm	0.44 ct
5.0 mm	0.50 ct
5.25 mm	0.56 ct
5.5 mm	0.66 ct
5.75 mm	0.75 ct
6 mm	0.84 ct
6.25 mm	0.93 ct
6.5 mm	1.00 ct
6.8 mm	1.25 ct

Round MM Size	Round Carat Weight
7 mm	1.30 ct
7.3 mm	1.50 ct
7.5 mm	1.67 ct
7.75 mm	1.75 ct
8 mm	2.00 ct
8.25 mm	2.11 ct
8.5 mm	2.43 ct
8.7 mm	2.50 ct
9 mm	2.75 ct
9.1 mm	3.00 ct
9.5 mm	3.35 ct
9.75 mm	3.50 ct
10 mm	3.87 ct
10.25 mm	4.00 ct
10.5 mm	4.41 ct
10.75 mm	4.50 ct
11 mm	5.00 ct
11.25 mm	5.49 ct
11.5 mm	5.85 ct
12 mm	6.84 ct
12.25 mm	7.26 ct
12.5 mm	7.36 ct
12.75 mm	7.52 ct
13 mm	8.51 ct
13.5 mm	9.53 ct
14 mm	10.49 ct
15 mm	12.89 ct
16 mm	16.06 ct

Diamond size charts by shape

Choosing the Right Diamond Size for Your Jewelry

The ideal diamond size depends on personal preference, budget, and jewelry design. Here’s a quick guide:

01 Engagement Rings

Most classic engagement rings feature 1ct–3ct diamonds, but larger stones (5ct+) make bold statements.

02 Necklaces & Pendants

0.50ct–2ct diamonds are perfect for solitaire pendants, while larger fancy-shaped diamonds create high-impact luxury pieces.

03 Bracelets & Earrings

Diamond tennis bracelets and stud earrings typically feature 0.25ct–1.50ct diamonds per stone for a balanced, elegant look.

Vibrant Size, Unmatched Brilliance

Experience the allure of rare, fancy color diamonds, meticulously crafted to radiate boldness and sophistication

Get In Touch

Certified & Custom-Cut Diamonds at Liora Diamond

At Liora Diamond, we specialize in custom-cut diamonds, allowing you to choose the exact shape, proportions, and faceting style to maximize beauty and brilliance. Whether you seek a traditional round brilliant or a bespoke fancy shape, we offer diamonds ranging from 1ct to 15ct+, including fancy-colored diamonds.

Every diamond is ethically sourced and available with GIA or IGI certification, ensuring quality and authenticity.

Find Your Perfect Diamond Size Today

Choosing the right diamond size is easier with expert guidance. Contact Liora Diamond for a personalized consultation and let us help you select or create the perfect diamond that matches your style and preference.

Get in touch today and discover the world of exquisite, custom-crafted diamonds!