1.5 Carat Diamonds

Create a brilliant custom piece of jewellery around the captivating beauty of a 1.5 carat diamond, available at Blue Nile. As you shop the traditional 1.5 carat round diamonds and the nine fancy shapes included in this selection, pay special attention to cut grade to maximise the diamond’s brilliance. This statement-making carat weight is ideal for engagement rings that will sparkle for a lifetime.


24 of 11,702 1.5 Carat Diamonds

FAQs about 1.5 Carat diamonds

There are many factors that affect loose diamond prices, including shape, colour, cut, clarity, and carat. Round diamonds are more expensive per carat weight than the nine fancy diamond shapes.

The shape and individual cut of a diamond determine the size of the stone. On average, a one-and-a-half-carat round diamond will measure 7.4mm in diameter, while an oval cut measures 9mm x 6mm. Blue Nile offers a half-carat diamond size chart that illustrates the differences in all shapes and sizes.

The 4 Cs are carat, colour, clarity, and cut. Carat impacts the price the most, but when you want to maximise brilliance, the cut grade is the most important.

One of the best ways to make your budget go farther is to "buy shy" and look for diamonds that have a carat weight of just under 1.5 rather than a 1.5 carat weight.

Top 1.5 Carat Diamond Reviews

1.5 carat round diamond review

Engagement ring

I purchased my engagement ring from blue mike and I must say the experience was top notch and the final product was excellent and far exceeded my expectations. I have recommended blue Nile to other friends who are looking for jewellery also.
Raphael M. - Verified Buyer
Average Customer Rating $5 out of 5 stars
Riviera Pavé Diamond Engagement Ring
Platinum (0.15 ct. tw.)


A woman resting her arm over her head while wearing a wedding band and engagement ring.

Her dream engagement ring

She said yes! My fiance cannot stop looking at the engagement ring i purchased from Blue Nile! Trang said it is her dream engagement ring brought to reality by the Blue Nile team. From the perfect diamond size, to the 6 claw arrangement, and the to the petite platinum setting equates to perfection. Like the saying goes a happy Fiance (wife) equals a happy life!
Jerome C. - Verified Buyer
Average Customer Rating $5 out of 5 stars
Petite Nouveau Six Claw Solitaire Engagement Ring



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