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Cushion|Lab Grown|IGI

0.81ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1

Diamond specifications and retailer prices

From $437 USD
As of October 27, 2026
1 retailer carries this diamond
Only listing: $437 USD at Blue Nile
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 Blue Nile

About this 0.81ct lab-grown cushion diamond

This 0.81ct lab-grown cushion sits in the just-under-one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at a single retailer as of October 27, 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

0.81
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions5.47 × 5.40 × 0.00 mm
L/W Ratio1.01
Top View
5.47 mm5.40 mm0.81 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.1%

Caratlytics Score

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

Last verified: Oct 27
Current: $437 USD|Low: $238 USD|High: $461 USD|Avg: $344 USD|-5.2%
Blue Nile
Retailer 2
October 27, 2026
Retailer 2$238 USD
Blue Nile$437 USD

2 data points across 2 retailers

1 retailer

B+
Blue Nile
20147174 · Oct 27
$437 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+
0.81ct Cushion
$437 USD