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Radiant|Lab Grown|IGI

1.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG778660444

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG778660444

Diamond specifications and retailer prices

From €170 EUR
$191 USD
As of November 2, 2026
Save €828 EUR (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €999 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant 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 LG778660444 or 778660444. Listed at 16 retailers as of October 29, 2026, with prices from €170 to €999, a €828 spread on the same certified stone. MOH London lists it at €999. 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

1.50
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778660444
Dimensions8.24 × 5.72 × 3.74 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.24 mm5.72 mm1.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778660444
Side View
Table 65.0%Crown 38.9°Girdle: Slightly ThickPavilion 33.7°Culet: NoneDepth 65.4%

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: Nov 2
Current: €999 EUR|Low: €163 EUR|High: €1,011 EUR|Avg: €504 EUR|-1.2%
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
Retailer 16
November 2, 2026
Retailer 16€170 EUR
Retailer 15€190 EUR
Retailer 11€198 EUR
Retailer 6€211 EUR
Retailer 8€212 EUR
Retailer 3€370 EUR
Retailer 9€384 EUR
Retailer 13€418 EUR
Retailer 14€507 EUR
Retailer 2€549 EUR
Retailer 12€679 EUR
Retailer 4€689 EUR
Retailer 5€727 EUR
Retailer 10€767 EUR
Retailer 7€909 EUR
MOH London€999 EUR

33 data points across 16 retailers

16 retailers€170 EUR to €999 EUR

A
Cheapest Retailer
-
€170 EUR
$191 USD
A
Retailer 2
-
€190 EUR
$213 USD
View
Final sale: no returns
A
Retailer 3
-
€198 EUR
$222 USD
View
A
Retailer 4
-
€211 EUR
$237 USD
View
Retailer 5
-
€212 EUR
$238 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
€370 EUR
$415 USD
View
A
Retailer 7
-
€384 EUR
£339 GBP
View
A
Retailer 8
-
€418 EUR
$469 USD
View
B+
Retailer 9
-
€507 EUR
$569 USD
View
B+
Retailer 10
-
€549 EUR
$616 USD
View
B+
Retailer 11
-
€679 EUR
$762 USD
View
B+
Retailer 12
-
€689 EUR
SGD 1,045 SGD
View
B+
Retailer 13
-
€727 EUR
$815 USD
View
B+
Retailer 14
-
€767 EUR
$860 USD
View
B
Retailer 15
-
€909 EUR
$1,020 USD
View
Most Expensive
B
MOH London
LG778660444 · Oct 29
€999 EUR
£882 GBP
View
15 more retailers have this diamond
Prices start from €170 EURSave up to €828 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
1.50ct Radiant
€170 EUR