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Cushion|Lab Grown|IGI

1.51ct G SI1 Cushion Lab Grown Diamond

EX • G/SI1 • IGI LG566329856

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG566329856

Diamond specifications and retailer prices

From $629 USD
As of November 1, 2026
1 retailer carries this diamond
Only listing: $629 USD at B2C Jewels
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at B2C Jewels

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG566329856 or 566329856. Listed at a single retailer as of November 1, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG566329856
Dimensions6.46 × 6.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.46 mm6.45 mm1.51 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG566329856
Side View
Table 61.5%Crown 36.5°Girdle: MED-THKPavilion 37.7°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: $629 USD|Low: $606 USD|High: $772 USD|Avg: $669 USD|-18.5%
September 23, 2026
B2C Jewels$629 USD

3 data points across 1 retailer

1 retailer

B+
B2C Jewels
21988598 · Nov 1
$629 USD
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Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.51ct Cushion
$629 USD