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Round, cushion, and pear lab-grown diamonds — Sula Bridal IGI-certified standard
The Sula Diamond Standard

Choose yourold mine diamond.

D–F color. VVS+ clarity. Excellent cut. Pricing below includes the Old Mine Cushion Knife-Edge Ring setting in 14K Yellow Gold.

IGI CertifiedLifetime limited warrantyOne complimentary resize within 1 year of delivery
Old Mine Cushion Knife-Edge Ring setting in 14K Yellow Gold
Your settingOld Mine Cushion Knife-Edge Ring14K Yellow Gold · Engagement Ring
Comparing diamond2.00ct Old Mine · $2,300D–F · VVS+ · setting + diamond total
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From $2,300 · 6 carats available
CaratDimensionsStatusPrice
Old Mine lab-grown diamond — Sula reference render
IGI Specification
Measurements (mm)7.10 × 7.00 × 4.80 mm
Ratio1.05
ColorD – F
ClarityVVS+
Cut · Polish · SymmetryExcellent
FluorescenceNone
IGI Certificate
Confirm Diamond & Continue · $2,300
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Carat size guide

How big is each carat, on the hand?

Carat is weight, not size. Here's how each tier reads on a real hand — from a delicate 0.50 carat to a statement 5 carats.

Round Brilliant Lab-Grown Diamond Carat Size Comparison from 0.5ct to 5ct on Hand | Sula Bridal

Round brilliant cuts shown above. Because of its 1.05 length-to-width ratio, a 1ct old mine faces up closer to a 1.1ct round — elongated cuts wear larger than their carat weight suggests.

Most US engagement rings sit between 1.5 and 2.5 carats. Lab-grown lets you go up a tier for the price of a smaller mined stone — learn why →