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Round|Lab Grown|IGI

5.09ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG771657233

Shape and cutting style on the report: Round brilliant

Certificate IGI LG771657233

Diamond specifications and retailer prices

From €644 EUR
$719 USD
As of October 26, 2026
Save €2,257 EUR (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €2,949 EUR at MOH London · As of October 21, 2026
View at MOH London

About this 5.09ct lab-grown round diamond

This 5.09ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG771657233 or 771657233. Listed at 17 retailers as of October 26, 2026, with a 351% 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

5.09
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771657233
Dimensions11.12 × 11.07 × 6.80 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.12 mm11.07 mm5.09 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771657233
Side View
Table 57.0%Crown 34.2°Girdle: MediumPavilion 41°Culet: NoneDepth 61.3%

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 26
Current: €2,949 EUR|Low: €619 EUR|High: €3,178 EUR|Avg: €1,407 EUR|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 15€644 EUR
Retailer 5€701 EUR
Retailer 7€721 EUR
Retailer 3€747 EUR
Retailer 11€904 EUR
Retailer 14€1,070 EUR
Retailer 4€1,156 EUR
Retailer 2€1,164 EUR
Retailer 10€1,190 EUR
Retailer 8€1,573 EUR
Retailer 13€1,577 EUR
Retailer 6€2,100 EUR
Retailer 9€2,242 EUR
Retailer 12€2,900 EUR
MOH London€2,949 EUR

42 data points across 15 retailers

17 retailers€644 EUR to €2,900 EUR

A
Cheapest Retailer
-
€644 EUR
$719 USD
Retailer 2
-
€701 EUR
$783 USD
View
Price last confirmed 8 days ago
Retailer 3
-
€747 EUR
$835 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
€904 EUR
$1,010 USD
View
B+
Retailer 5
-
€1,070 EUR
$1,195 USD
View
B+
Retailer 6
-
€1,156 EUR
$1,292 USD
View
B+
Retailer 7
-
€1,164 EUR
View
B+
Retailer 8
-
€1,190 EUR
£1,047 GBP
View
B
Retailer 9
-
€1,573 EUR
$1,757 USD
View
B
Retailer 10
-
€1,577 EUR
$1,762 USD
View
B
Retailer 11
-
€1,647 EUR
$1,840 USD
View
Retailer 12
-
€2,100 EUR
$2,346 USD
View
Price last confirmed 7 days ago
B
Retailer 13
-
€2,242 EUR
$2,505 USD
View
Retailer 14
-
€2,433 EUR
$2,719 USD
View
Price last confirmed 7 days ago
B
Retailer 15
-
€2,575 EUR
$2,877 USD
View
B
Retailer 16
-
€2,900 EUR
$3,240 USD
View
Most Expensive
MOH London
LG771657233 · Oct 21
€2,949 EUR
£2,594 GBP
View
Price last confirmed 11 days ago
16 more retailers have this diamond
Prices start from €644 EURSave up to €2,257 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
5.09ct Round
€644 EUR