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Round|Lab Grown|IGI

5.21ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG702569939

Shape and cutting style on the report: Round brilliant

Certificate IGI LG702569939

Diamond specifications and retailer prices

From $1,022 AUD
$718 USD
As of October 31, 2026
Save $4,046 AUD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,460 AUD at MOH London · As of October 21, 2026
View at MOH London

About this 5.21ct lab-grown round diamond

This 5.21ct lab-grown round sits in the over five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG702569939 or 702569939. Listed at 13 retailers as of October 30, 2026, with a 396% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.21
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG702569939
Dimensions11.15 × 11.09 × 6.83 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.15 mm11.09 mm5.21 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG702569939
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.4%

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 31
Current: $6,460 AUD|Low: $1,022 AUD|High: $8,727 AUD|Avg: $3,105 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 31, 2026
Retailer 2$1,022 AUD
Retailer 8$1,562 AUD
Retailer 6$1,790 AUD
Retailer 10$1,812 AUD
Retailer 12$1,812 AUD
Retailer 4$2,301 AUD
Retailer 11$2,884 AUD
Retailer 7$2,892 AUD
Retailer 9$3,676 AUD
Retailer 3$3,748 AUD
Retailer 5$5,068 AUD
MOH London$6,460 AUD

42 data points across 12 retailers

13 retailers$1,022 AUD to $5,068 AUD

A
Cheapest Retailer
-
$1,022 AUD
$718 USD
A
Retailer 2
-
$1,562 AUD
$1,097 USD
View
A
Retailer 3
-
$1,790 AUD
£990 GBP
View
B+
Retailer 4
-
$1,812 AUD
$1,273 USD
View
Retailer 5
-
$1,812 AUD
$1,273 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$2,235 AUD
$1,570 USD
View
B+
Retailer 7
-
$2,301 AUD
$1,616 USD
View
B
Retailer 8
-
$2,884 AUD
$2,026 USD
View
B+
Retailer 9
-
$2,892 AUD
£1,599 GBP
View
B
Retailer 10
-
$3,676 AUD
$2,582 USD
View
B
Retailer 11
-
$3,748 AUD
$2,633 USD
View
B
Retailer 12
-
$5,068 AUD
$3,560 USD
View
Most Expensive
MOH London
LG702569939 · Oct 21
$6,460 AUD
£3,573 GBP
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from $1,022 AUDSave up to $4,046 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
5.21ct Round
$1,022 AUD