Diamond Size Guide Cushion

Size guide

Cushion Diamond Size Chart

See how carat weight translates into millimeter measurements for cushion diamonds.

Complete Cushion size chart

19 sizes
Size (mm)Carat
3.25 mm0.25 ct
4.2 mm0.40 ct
4.9 mm0.50 ct
5.25 mm0.75 ct
5.5 mm1.00 ct
6 mm1.25 ct
6.5 mm1.50 ct
6.75 mm1.75 ct
7 mm2.00 ct
7.5 mm2.50 ct
8 mm3.00 ct
8.5 mm3.50 ct
9 mm4.00 ct
9.3 mm4.50 ct
9.5 mm5.00 ct
10 mm5.62 ct
11 mm7.44 ct
12 mm9.52 ct
13 mm12.66 ct

Our Promises

Free Shipping Worldwide

Easy Payment Plan

24/7 Customer Service

100% Money Back Guarantee

Trionzadiamond’s Trust

Eco Friendly Element
Turning Dreams into Dazzle Turning Dreams into Dazzle Decorative Ring

Turning Dreams into Dazzle

Where imagination meets craftsmanship, beauty is born.
Designed with You, Crafted for Eternity

Contact Us For Custom Jewelry

Testimonials

2580+ Verified Review with an Average Rating of 4 Stars

⭐⭐⭐⭐⭐

Your Journey, Our Purpose

See what our happy customers say about Trionza Diamond

Brittany Buckner

Brittany Buckner

★★★★★

Love my ring!! It is GORGEOUS! Better than expected and fast shipping, quick response for customer service too! Highly recommend.

Sophia Miller

Sophia Miller

★★★★★

Amazing quality and perfect fit! Customer service was super helpful and guided me through everything. The packaging was also exquisite.

Emma Johnson

Emma Johnson

★★★★★

Absolutely stunning! The ring sparkles beautifully and is even better in real life! I've received so many compliments already.

View More Reviews