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Radiant|Lab Grown|IGI

1.50ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG647447808

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

Certificate IGI LG647447808

Diamond specifications and retailer prices

From €187 EUR
$209 USD
As of October 25, 2026
Save €789 EUR (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €976 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG647447808 or 647447808. Listed at 16 retailers as of October 25, 2026, with prices from €187 to €976, a €789 spread on the same certified stone. Brilliant Earth lists it at €976. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647447808
Dimensions7.93 × 5.74 × 3.82 mm
L/W Ratio1.38
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.93 mm5.74 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647447808
Side View
Table 66.0%Crown 42.6°Girdle: MediumPavilion 35.3°Culet: NoneDepth 66.6%

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 25
Current: €976 EUR|Low: €175 EUR|High: €1,155 EUR|Avg: €470 EUR|-15.5%
Brilliant Earth
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
October 30, 2026
Retailer 14€175 EUR
Retailer 4€184 EUR
Retailer 8€187 EUR
Retailer 11€241 EUR
Retailer 2€332 EUR
Retailer 12€336 EUR
Retailer 3€349 EUR
Retailer 10€354 EUR
Retailer 6€392 EUR
Retailer 5€488 EUR
Retailer 9€636 EUR
Retailer 13€774 EUR
Retailer 7€880 EUR
Brilliant Earth€976 EUR

38 data points across 14 retailers

16 retailers€187 EUR to €976 EUR

Retailer 1
-
€175 EUR
$196 USD
Price last confirmed 33 days ago
Retailer 2
-
€184 EUR
$206 USD
View
Price last confirmed 33 days ago
Retailer 3
-
€187 EUR
$209 USD
View
Price last confirmed 18 days ago
A
Retailer 4
-
€187 EUR
$209 USD
View
Retailer 5
-
€241 EUR
£212 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
€332 EUR
£292 GBP
View
B+
Retailer 7
-
€336 EUR
$375 USD
View
Retailer 8
-
€349 EUR
£307 GBP
View
Price last confirmed 21 days ago
A
Retailer 9
-
€354 EUR
View
A
Retailer 10
-
€392 EUR
$438 USD
View
B+
Retailer 11
-
€488 EUR
$545 USD
View
B
Retailer 12
-
€636 EUR
$710 USD
View
B+
Retailer 13
-
€657 EUR
£578 GBP
View
Retailer 14
-
€774 EUR
$865 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
€880 EUR
£774 GBP
View
Most Expensive
B
Brilliant Earth
11455293A · Oct 30
€976 EUR
$1,090 USD
View
15 more retailers have this diamond
Prices start from €187 EURSave up to €789 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
€187 EUR