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 $489 CAD
As of November 6, 2026
Save $1,241 CAD (72%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,730 CAD 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 $489 to $1,730, a $1,241 spread on the same certified stone. Brilliant Earth lists it at $1,730. 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
Color
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

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 6
Current: $1,730 CAD|Low: $257 CAD|High: $2,054 CAD|Avg: $986 CAD|-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$257 CAD
Retailer 2$489 CAD
Retailer 9$505 CAD
Retailer 11$518 CAD
Retailer 8$519 CAD
Retailer 6$689 CAD
Retailer 12$743 CAD
Retailer 3$761 CAD
Retailer 13$1,000 CAD
Retailer 10$1,345 CAD
Retailer 7$1,428 CAD
Retailer 5$1,521 CAD
Brilliant Earth$1,730 CAD

35 data points across 13 retailers

16 retailers$489 CAD to $1,730 CAD

Retailer 1
-
$328 CAD
Price last confirmed 30 days ago
Retailer 2
-
$380 CAD
View
Price last confirmed 41 days ago
Retailer 3
-
$407 CAD
View
Price last confirmed 35 days ago
A
Retailer 4
-
$489 CAD
View
Retailer 5
-
$505 CAD
View
Price last confirmed 11 days ago
Retailer 6
-
$518 CAD
View
Price last confirmed 13 days ago
Retailer 7
-
$519 CAD
View
Price last confirmed 10 days ago
A
Retailer 8
-
$689 CAD
View
A
Retailer 9
-
$743 CAD
View
Retailer 10
-
$761 CAD
View
Price last confirmed 12 days ago
Retailer 11
-
$1,000 CAD
View
Price last confirmed 11 days ago
Retailer 12
-
$1,308 CAD
View
Price last confirmed 38 days ago
Retailer 13
-
$1,345 CAD
View
Price last confirmed 13 days ago
Retailer 14
-
$1,428 CAD
View
Price last confirmed 10 days ago
Retailer 15
-
$1,521 CAD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
15840212A · Nov 6
$1,730 CAD
$1,230 USD
View
15 more retailers have this diamond
Prices start from $489 CADSave up to $1,241 CAD

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
$489 CAD