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 €643 EUR
$718 USD
As of October 31, 2026
Save €2,544 EUR (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €4,062 EUR 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
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 31
Current: €4,062 EUR|Low: €643 EUR|High: €5,487 EUR|Avg: €1,960 EUR|-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 5€643 EUR
Retailer 9€982 EUR
Retailer 7€1,126 EUR
Retailer 3€1,139 EUR
Retailer 11€1,139 EUR
Retailer 4€1,446 EUR
Retailer 12€1,813 EUR
Retailer 8€1,818 EUR
Retailer 2€2,126 EUR
Retailer 10€2,311 EUR
Retailer 6€3,187 EUR
MOH London€4,062 EUR

41 data points across 12 retailers

13 retailers€643 EUR to €3,187 EUR

A
Cheapest Retailer
-
€643 EUR
$718 USD
A
Retailer 2
-
€982 EUR
$1,097 USD
View
A
Retailer 3
-
€1,126 EUR
£990 GBP
View
B+
Retailer 4
-
€1,139 EUR
$1,273 USD
View
Retailer 5
-
€1,139 EUR
$1,273 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,405 EUR
$1,570 USD
View
B+
Retailer 7
-
€1,446 EUR
$1,616 USD
View
B
Retailer 8
-
€1,813 EUR
$2,026 USD
View
B+
Retailer 9
-
€1,818 EUR
£1,599 GBP
View
B
Retailer 10
-
€2,126 EUR
$2,375 USD
View
B
Retailer 11
-
€2,311 EUR
$2,582 USD
View
B
Retailer 12
-
€3,187 EUR
$3,560 USD
View
Most Expensive
MOH London
LG702569939 · Oct 21
€4,062 EUR
£3,573 GBP
View
Price last confirmed 10 days ago
12 more retailers have this diamond
Prices start from €643 EURSave up to €2,544 EUR

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
€643 EUR