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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 $876 AUD
$615 USD
As of October 29, 2026
Save $3,191 AUD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,066 AUD 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 $876 to $4,066, a $3,191 spread on the same certified stone. MOH London lists it at $4,066. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $4,066 AUD|Low: $564 AUD|High: $7,047 AUD|Avg: $2,430 AUD|-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 30, 2026
Retailer 11$876 AUD
Retailer 10$969 AUD
Retailer 5$1,046 AUD
Retailer 8$1,298 AUD
Retailer 9$1,478 AUD
Retailer 2$1,510 AUD
Retailer 12$1,643 AUD
Retailer 7$2,114 AUD
Retailer 3$3,144 AUD
Retailer 6$3,659 AUD
MOH London$4,066 AUD
Retailer 4$7,047 AUD

41 data points across 12 retailers

11 retailers$876 AUD to $4,066 AUD

A
Cheapest Retailer
-
$876 AUD
$615 USD
Final sale: no returns
Retailer 2
-
$969 AUD
$681 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
$1,046 AUD
$735 USD
View
B+
Retailer 4
-
$1,298 AUD
$912 USD
View
A
Retailer 5
-
$1,510 AUD
£835 GBP
View
B+
Retailer 6
-
$1,643 AUD
$1,154 USD
View
B+
Retailer 7
-
$2,114 AUD
$1,485 USD
View
B
Retailer 8
-
$3,144 AUD
$2,208 USD
View
Retailer 9
-
$3,659 AUD
$2,570 USD
View
Price last confirmed 11 days ago
Retailer 10
-
$4,059 AUD
$2,851 USD
View
Price last confirmed 87 days ago
Most Expensive
B
MOH London
LG625441166 · Oct 29
$4,066 AUD
£2,249 GBP
View
10 more retailers have this diamond
Prices start from $876 AUDSave up to $3,191 AUD

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
$876 AUD