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Cushion|Lab Grown|GIA

3.09ct H SI1 Cushion Lab Grown Diamond

EX • H/SI1 • GIA 6425401098

Certificate GIA 6425401098

Diamond specifications and retailer prices

From $1,660 CAD
As of November 5, 2026
Save $3,624 CAD (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,284 CAD at MOH London · As of November 5, 2026
View at MOH London

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded H 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 6425401098. Listed at 10 retailers as of November 5, 2026, with prices from $1,660 to $5,284, a $3,624 spread on the same certified stone. MOH London lists it at $5,284. 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

3.09
Carat
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6425401098
Dimensions8.61 × 8.42 × 5.57 mm
L/W Ratio1.02
Top View
8.61 mm8.42 mm3.09 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6425401098
Side View
Table 63.0%CrownGirdle: STK-NULPavilionCulet: NoneDepth 66.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,284 CAD|Low: $1,414 CAD|High: $5,370 CAD|Avg: $2,589 CAD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$1,414 CAD
Retailer 5$1,660 CAD
Retailer 9$1,779 CAD
Retailer 10$2,071 CAD
Retailer 2$2,182 CAD
Retailer 7$2,272 CAD
Retailer 4$2,384 CAD
Retailer 3$2,952 CAD
Retailer 6$3,502 CAD
MOH London$5,284 CAD

30 data points across 10 retailers

10 retailers$1,660 CAD to $5,284 CAD

Retailer 1
-
$1,414 CAD
Price last confirmed 25 days ago
A
Retailer 2
-
$1,660 CAD
View
A
Retailer 3
-
$1,779 CAD
View
Final sale: no returns
B+
Retailer 4
-
$2,071 CAD
View
B+
Retailer 5
-
$2,182 CAD
View
B+
Retailer 6
-
$2,272 CAD
View
B+
Retailer 7
-
$2,384 CAD
View
B+
Retailer 8
-
$2,952 CAD
View
B
Retailer 9
-
$3,502 CAD
View
Most Expensive
B
MOH London
6425401098 · Nov 5
$5,284 CAD
£2,958 GBP
View
9 more retailers have this diamond
Prices start from $1,660 CADSave up to $3,624 CAD

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.

A
3.09ct Cushion
$1,660 CAD