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Try It On

By Mike Fried, Updated October 4, 2018

Try It On

Try It On Tool

Our tool will help you determine the right diamond size. Simply enter your desired carat size (or dimensions) and shape in the fields below. The exact diamond shape will show up on the model finger which can be customized by adjusting the finger size or ring width. Once you've found the right size, click the button in the "Find the Best" and we'll help you find the right diamond for the best value.

Enter either the carat weight or the dimensions of a diamond

× ×

carat shape length width depth

Diamond on a left finger Actual Size

  • Cutting style

    Brilliant

  • Weight

    2 ct

  • Measurements

    8.19 × 8.19 × 4.94 mm

  • Total depth

    60.3% → ok

  • L/W ratio

    1

  • Face-up size

    Adequate

  • Find the Best

    2 ct Round

Left finger image
Ring on a left finger
Diamond on a finger
64 mm

Ring width:
3.0 mm

Ring: Skin tone:

Ring diameter:
16.9 mm

Or choose size:

Round diamond side view Left ring side view
Your settings:
  • Ring
    Gold
  • Skin tone
    Light
  • Ring diameter
    16.9 mm
  • Ring width
    3.0 mm
  • Finger length
    64 mm

Saved…

Find the Best

Submit the diamond size and shape that you're looking for to receive personalized advice from our experts.

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Diamond Size Charts

To help you compare different carat sizes, we created the preview charts
below for the most popular shapes including: Princess, Round, Cushion,
Marquise and Emerald.

To see sizes for all diamond shapes, click on the button below to download our
full printable diamond size chart.
Download All Sizes

Princess

diamond-size-chart-princess-cut

Round

diamond-size-chart-round-cut

Cushion

diamond-size-chart-cushion-cut

Marquise

diamond-size-chart-marquise-cut

Emerald

diamond-size-chart-Emerald-cut

James Allen James Allen is the leader in online diamond sales. Their imaging technology is the same as inspecting a diamond with a jeweler's loupe. They have the largest exclusive loose diamond inventory online and fantastic prices. They also have the nicest collection of lab-created diamonds online.
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Click to Visit
What we love about them:
  • No questions asked returns within 30 days of shipment. Blue Nile will send you a paid shipping label to return the ring.
  • Lifetime Warranty
  • Free Shipping
  • Free prong tightening, repolishing, rhodium plating and cleaning every 6 months
  • Provide insurance appraisal
  • One free resizing within the first year of purchase
  • High quality images of about half of their diamonds
  • 24/7 Customer Service
  • 100% credit towards future upgrades (must be at least double in value)
  • Best in class fulfillment
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Still afraid of getting ripped off?

Before you buy a diamond, get personal buying advice from industry veterans. We'll help you get the best diamond for the money.

Ask your diamond purchase question here

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