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Radiant|Lab Grown|IGI

1.55ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1

Diamond specifications and retailer prices

From $693 CAD
$496 USD
As of October 30, 2026
Save $1,566 CAD (69%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,259 CAD at NZ Jewellers · As of November 1, 2026
View at NZ Jewellers

About this 1.55ct lab-grown radiant diamond

This 1.55ct 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 4 retailers as of October 30, 2026, with prices from $693 to $2,259, a $1,566 spread on the same certified stone. NZ Jewellers lists it at $2,259. 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

1.55
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.49 × 5.78 × 3.93 mm
L/W Ratio1.30
Top View
7.49 mm5.78 mm1.55 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 65.5%CrownGirdlePavilionCulet: NoneDepth 68.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,259 CAD|Low: $499 CAD|High: $2,259 CAD|Avg: $1,041 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 7$499 CAD
Retailer 4$693 CAD
Retailer 3$775 CAD
Retailer 2$859 CAD
Retailer 5$959 CAD
Retailer 6$1,592 CAD
NZ Jewellers$2,259 CAD

9 data points across 7 retailers

4 retailers$693 CAD to $2,259 CAD

B+
Cheapest Retailer
-
$693 CAD
$496 USD
B+
Retailer 2
-
$775 CAD
$555 USD
View
B+
Retailer 3
-
$859 CAD
$615 USD
View
Most Expensive
C
NZ Jewellers
5e62c297-61fa-463e-8ceb-37a62756b469 · Nov 1
$2,259 CAD
$1,617 USD
View
3 more retailers have this diamond
Prices start from $693 CADSave up to $1,566 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.

B+
1.55ct Radiant
$693 CAD