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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 €641 EUR
$719 USD
As of October 26, 2026
Save €2,248 EUR (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €2,937 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
Colour
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

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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: €2,937 EUR|Low: €616 EUR|High: €3,165 EUR|Avg: €1,401 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
November 2, 2026
Retailer 15€641 EUR
Retailer 5€698 EUR
Retailer 7€718 EUR
Retailer 3€744 EUR
Retailer 11€900 EUR
Retailer 14€1,065 EUR
Retailer 4€1,152 EUR
Retailer 2€1,163 EUR
Retailer 10€1,186 EUR
Retailer 8€1,567 EUR
Retailer 13€1,571 EUR
Retailer 6€2,092 EUR
Retailer 9€2,233 EUR
Retailer 12€2,889 EUR
MOH London€2,937 EUR

42 data points across 15 retailers

17 retailers€641 EUR to €2,889 EUR

A
Cheapest Retailer
-
€641 EUR
$719 USD
Retailer 2
-
€698 EUR
$783 USD
View
Price last confirmed 9 days ago
Retailer 3
-
€744 EUR
$835 USD
View
Price last confirmed 8 days ago
Retailer 4
-
€900 EUR
$1,010 USD
View
Price last confirmed 5 days ago
B+
Retailer 5
-
€1,065 EUR
$1,195 USD
View
B+
Retailer 6
-
€1,152 EUR
$1,292 USD
View
B+
Retailer 7
-
€1,163 EUR
View
B+
Retailer 8
-
€1,186 EUR
£1,047 GBP
View
B
Retailer 9
-
€1,567 EUR
$1,757 USD
View
B
Retailer 10
-
€1,571 EUR
$1,762 USD
View
Retailer 11
-
€1,641 EUR
$1,840 USD
View
Price last confirmed 7 days ago
Retailer 12
-
€2,092 EUR
$2,346 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
€2,233 EUR
$2,505 USD
View
Retailer 14
-
€2,424 EUR
$2,719 USD
View
Price last confirmed 8 days ago
B
Retailer 15
-
€2,565 EUR
$2,877 USD
View
B
Retailer 16
-
€2,889 EUR
$3,240 USD
View
Most Expensive
MOH London
LG771657233 · Oct 21
€2,937 EUR
£2,594 GBP
View
Price last confirmed 12 days ago
16 more retailers have this diamond
Prices start from €641 EURSave up to €2,248 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
€641 EUR