Cushion|Lab Grown|GIA

3.21ct G SI1 Cushion Lab Grown Diamond

EX • G/SI1

Diamond specifications and retailer prices

From $1,404 USD
£1,105 GBP
As of November 2, 2026
Save $2,692 USD (66%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,096 USD at Diamond Exchange Canada · As of November 2, 2026
View at Diamond Exchange Canada

About this 3.21ct lab-grown cushion diamond

This 3.21ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of November 2, 2026, with prices from $1,404 to $4,096, a $2,692 spread on the same certified stone. Diamond Exchange Canada lists it at $4,096. 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

3.21
Carat
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions9.39 × 8.14 × 5.51 mm
L/W Ratio1.15
Top View
9.39 mm8.14 mm3.21 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCuletDepth 67.7%

Caratlytics Score

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

Last verified: Nov 2
Current: $4,096 USD|Low: $1,353 USD|High: $4,096 USD|Avg: $2,740 USD
Diamond Exchange Canada
Retailer 2
November 2, 2026
Retailer 2$1,404 USD
Diamond Exchange Canada$4,096 USD

40 data points across 2 retailers

2 retailers$1,404 USD to $4,096 USD

B+
Cheapest Retailer
-
$1,404 USD
£1,105 GBP
Most Expensive
C
Diamond Exchange Canada
1986529633 · Nov 2
$4,096 USD
CA$5,688 CAD
View
1 more retailer has this diamond
Prices start from $1,404 USDSave up to $2,692 USD

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+
3.21ct Cushion
$1,404 USD