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Radiant|Lab Grown|IGI

1.51ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1

Diamond specifications and retailer prices

From $681 CAD
As of November 6, 2026
Save $2,033 CAD (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,713 CAD at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

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. Listed at 5 retailers as of November 6, 2026, with prices from $681 to $2,713, a $2,033 spread on the same certified stone. NZ Jewellers lists it at $2,713. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.28 × 5.64 × 3.87 mm
L/W Ratio1.29
Top View
7.28 mm5.64 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 66.5%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 68.6%

Caratlytics Score

How it works →
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 6
Current: $2,713 CAD|Low: $488 CAD|High: $2,713 CAD|Avg: $1,060 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$488 CAD
Retailer 5$681 CAD
Retailer 4$762 CAD
Retailer 3$844 CAD
Retailer 2$934 CAD
Retailer 6$1,574 CAD
NZ Jewellers$2,713 CAD

39 data points across 7 retailers

5 retailers$681 CAD to $2,713 CAD

A
Cheapest Retailer
-
$681 CAD
B+
Retailer 2
-
$762 CAD
View
B+
Retailer 3
-
$844 CAD
View
B+
Retailer 4
-
$934 CAD
View
Most Expensive
C
NZ Jewellers
6ee64d95-f7fd-4ec1-bf28-e54896464641 · Nov 6
$2,713 CAD
$1,929 USD
View
4 more retailers have this diamond
Prices start from $681 CADSave up to $2,033 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
$681 CAD