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Cushion|Lab Grown|IGI

3.21ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG625441166

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG625441166

Diamond specifications and retailer prices

From $615 USD
As of October 31, 2026
Save $2,241 USD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,856 USD at MOH London · As of October 29, 2026
View at MOH London

About this 3.21ct lab-grown cushion diamond

This 3.21ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG625441166 or 625441166. Listed at 11 retailers as of October 29, 2026, with prices from $615 to $2,856, a $2,241 spread on the same certified stone. MOH London lists it at $2,856. 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
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625441166
Dimensions10.21 × 7.71 × 5.06 mm
L/W Ratio1.32
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
10.21 mm7.71 mm3.21 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625441166
Side View
Table 64.0%Crown 34.1°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 65.6%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $2,856 USD|Low: $396 USD|High: $4,950 USD|Avg: $1,707 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 11$615 USD
Retailer 10$681 USD
Retailer 5$735 USD
Retailer 8$912 USD
Retailer 9$1,038 USD
Retailer 2$1,061 USD
Retailer 12$1,154 USD
Retailer 7$1,485 USD
Retailer 3$2,208 USD
Retailer 6$2,570 USD
MOH London$2,856 USD
Retailer 4$4,950 USD

42 data points across 12 retailers

11 retailers$615 USD to $2,856 USD

A
Cheapest Retailer
-
$615 USD
Final sale: no returns
Retailer 2
-
$681 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
$735 USD
View
B+
Retailer 4
-
$912 USD
View
A
Retailer 5
-
$1,061 USD
£835 GBP
View
B+
Retailer 6
-
$1,154 USD
View
B+
Retailer 7
-
$1,485 USD
View
B
Retailer 8
-
$2,208 USD
View
Retailer 9
-
$2,570 USD
View
Price last confirmed 12 days ago
Retailer 10
-
$2,851 USD
View
Price last confirmed 88 days ago
Most Expensive
B
MOH London
LG625441166 · Oct 29
$2,856 USD
£2,249 GBP
View
10 more retailers have this diamond
Prices start from $615 USDSave up to $2,241 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.

A
3.21ct Cushion
$615 USD