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Round|Lab Grown|IGI

1.51ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG818686567

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686567

Diamond specifications and retailer prices

From €180 EUR
$201 USD
As of November 1, 2026
Save €865 EUR (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,045 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818686567 or 818686567. Listed at 15 retailers as of November 1, 2026, with prices from €180 to €1,045, a €865 spread on the same certified stone. MOH London lists it at €1,045. 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

1.51
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686567
Dimensions7.36 × 7.33 × 4.53 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.36 mm7.33 mm1.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686567
Side View
Table 57.0%Crown 34.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.7%

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: Nov 1
Current: €1,045 EUR|Low: €180 EUR|High: €1,057 EUR|Avg: €537 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 9€180 EUR
Retailer 11€224 EUR
Retailer 6€372 EUR
Retailer 12€388 EUR
Retailer 2€398 EUR
Retailer 5€406 EUR
Retailer 4€408 EUR
Retailer 7€576 EUR
Retailer 8€640 EUR
Retailer 3€766 EUR
Retailer 10€770 EUR
MOH London€1,045 EUR

44 data points across 12 retailers

15 retailers€180 EUR to €1,045 EUR

A
Cheapest Retailer
-
€180 EUR
$201 USD
A
Retailer 2
-
€209 EUR
$233 USD
View
Retailer 3
-
€224 EUR
$250 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
€224 EUR
$250 USD
View
A
Retailer 5
-
€372 EUR
View
B+
Retailer 6
-
€388 EUR
$433 USD
View
A
Retailer 7
-
€398 EUR
£350 GBP
View
A
Retailer 8
-
€406 EUR
£357 GBP
View
A
Retailer 9
-
€408 EUR
$456 USD
View
B+
Retailer 10
-
€576 EUR
$644 USD
View
B+
Retailer 11
-
€640 EUR
$715 USD
View
B+
Retailer 12
-
€718 EUR
$802 USD
View
B
Retailer 13
-
€766 EUR
$856 USD
View
B
Retailer 14
-
€770 EUR
$860 USD
View
Most Expensive
B
MOH London
LG818686567 · Nov 1
€1,045 EUR
£919 GBP
View
14 more retailers have this diamond
Prices start from €180 EURSave up to €865 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
1.51ct Round
€180 EUR