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 $1,097 USD
As of October 29, 2026
Save $2,463 USD (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,538 USD 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 29, 2026, with a 225% 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
Color
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 29
Current: $4,538 USD|Low: $1,053 USD|High: $6,130 USD|Avg: $2,176 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 30, 2026
Retailer 7$1,097 USD
Retailer 4$1,194 USD
Retailer 5$1,257 USD
Retailer 9$1,273 USD
Retailer 11$1,273 USD
Retailer 3$1,616 USD
Retailer 10$2,026 USD
Retailer 6$2,031 USD
Retailer 8$2,582 USD
Retailer 12$2,633 USD
Retailer 2$3,560 USD
MOH London$4,538 USD

42 data points across 12 retailers

13 retailers$1,097 USD to $3,560 USD

A
Cheapest Retailer
-
$1,097 USD
A
Retailer 2
-
$1,194 USD
View
A
Retailer 3
-
$1,257 USD
£990 GBP
View
B+
Retailer 4
-
$1,273 USD
View
Retailer 5
-
$1,273 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,570 USD
View
B+
Retailer 7
-
$1,616 USD
View
B
Retailer 8
-
$2,026 USD
View
B+
Retailer 9
-
$2,031 USD
£1,599 GBP
View
B
Retailer 10
-
$2,582 USD
View
B
Retailer 11
-
$2,633 USD
View
B
Retailer 12
-
$3,560 USD
View
Most Expensive
MOH London
LG702569939 · Oct 21
$4,538 USD
£3,573 GBP
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from $1,097 USDSave up to $2,463 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
5.21ct Round
$1,097 USD