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Round|Lab Grown|IGI

1.51ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG631466945

Shape and cutting style on the report: Round brilliant

Certificate IGI LG631466945

Diamond specifications and retailer prices

From €175 EUR
$196 USD
As of November 1, 2026
Save €840 EUR (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,015 EUR at MOH London · As of November 2, 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 LG631466945 or 631466945. Listed at 13 retailers as of November 1, 2026, with prices from €175 to €1,015, a €840 spread on the same certified stone. MOH London lists it at €1,015. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631466945
Dimensions7.46 × 7.40 × 4.44 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.46 mm7.40 mm1.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG631466945
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 59.8%

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: Nov 1
Current: €1,015 EUR|Low: €175 EUR|High: €1,020 EUR|Avg: €477 EUR|+2.6%
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 3, 2026
Retailer 3€175 EUR
Retailer 12€203 EUR
Retailer 11€217 EUR
Retailer 4€220 EUR
Retailer 7€378 EUR
Retailer 5€387 EUR
Retailer 2€396 EUR
Retailer 6€514 EUR
Retailer 9€642 EUR
Retailer 10€698 EUR
Retailer 8€700 EUR
MOH London€1,015 EUR

44 data points across 12 retailers

13 retailers€175 EUR to €1,015 EUR

A
Cheapest Retailer
-
€175 EUR
$196 USD
A
Retailer 2
-
€203 EUR
$228 USD
View
A
Retailer 3
-
€217 EUR
$243 USD
View
A
Retailer 4
-
€220 EUR
$247 USD
View
Final sale: no returns
Retailer 5
-
€244 EUR
$274 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
€378 EUR
$424 USD
View
A
Retailer 7
-
€387 EUR
£341 GBP
View
A
Retailer 8
-
€396 EUR
£350 GBP
View
B+
Retailer 9
-
€514 EUR
$576 USD
View
B+
Retailer 10
-
€642 EUR
$720 USD
View
B+
Retailer 11
-
€698 EUR
$783 USD
View
B+
Retailer 12
-
€700 EUR
$785 USD
View
Most Expensive
B
MOH London
LG631466945 · Nov 2
€1,015 EUR
£896 GBP
View
12 more retailers have this diamond
Prices start from €175 EURSave up to €840 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
€175 EUR