Radiant|Lab Grown|IGI

1.51ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG732564144

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

Certificate IGI LG732564144

Diamond specifications and retailer prices

From €312 EUR
As of November 6, 2026
Save €790 EUR (72%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,102 EUR at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG732564144 or 732564144. Listed at 16 retailers as of November 6, 2026, with prices from €312 to €1,102, a €790 spread on the same certified stone. Brilliant Earth lists it at €1,102. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732564144
Dimensions8.20 × 5.71 × 3.76 mm
L/W Ratio1.44
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.20 mm5.71 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732564144
Side View
Table 68.0%Crown 42.1°Girdle: MED-STKPavilion 33.9°Culet: NoneDepth 65.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: €1,102 EUR|Low: €164 EUR|High: €1,308 EUR|Avg: €628 EUR|-4.7%
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
November 6, 2026
Retailer 4€164 EUR
Retailer 2€312 EUR
Retailer 9€322 EUR
Retailer 11€330 EUR
Retailer 8€330 EUR
Retailer 6€439 EUR
Retailer 12€473 EUR
Retailer 3€485 EUR
Retailer 13€637 EUR
Retailer 10€856 EUR
Retailer 7€909 EUR
Retailer 5€968 EUR
Brilliant Earth€1,102 EUR

35 data points across 13 retailers

16 retailers€312 EUR to €1,102 EUR

Retailer 1
-
€209 EUR
Price last confirmed 30 days ago
Retailer 2
-
€242 EUR
View
Price last confirmed 41 days ago
Retailer 3
-
€259 EUR
View
Price last confirmed 35 days ago
A
Retailer 4
-
€312 EUR
View
Retailer 5
-
€322 EUR
View
Price last confirmed 11 days ago
Retailer 6
-
€330 EUR
View
Price last confirmed 13 days ago
Retailer 7
-
€330 EUR
View
Price last confirmed 10 days ago
A
Retailer 8
-
€439 EUR
View
A
Retailer 9
-
€473 EUR
View
Retailer 10
-
€485 EUR
View
Price last confirmed 12 days ago
Retailer 11
-
€637 EUR
View
Price last confirmed 11 days ago
Retailer 12
-
€833 EUR
View
Price last confirmed 38 days ago
Retailer 13
-
€856 EUR
View
Price last confirmed 13 days ago
Retailer 14
-
€909 EUR
View
Price last confirmed 10 days ago
Retailer 15
-
€968 EUR
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
15840212A · Nov 6
€1,102 EUR
$1,230 USD
View
15 more retailers have this diamond
Prices start from €312 EURSave up to €790 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 Radiant
€312 EUR