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Round|Lab Grown|GCAL

1.03ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • GCAL 323071049

Shape and cutting style on the report: Round brilliant

Certificate GCAL 323071049

Diamond specifications and retailer prices

From $324 CAD
As of November 2, 2026
Save $690 CAD (68%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,123 CAD at MOH London · As of October 26, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 323071049. Listed at 7 retailers as of November 2, 2026, with a 213% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.03
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 323071049
Dimensions6.49 × 6.51 × 3.98 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.49 mm6.51 mm1.03 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 323071049
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.2%

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 2
Current: $1,123 CAD|Low: $281 CAD|High: $1,960 CAD|Avg: $742 CAD|-40.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6$324 CAD
Retailer 5$436 CAD
Retailer 3$527 CAD
Retailer 2$617 CAD
Retailer 4$729 CAD
Retailer 7$1,014 CAD
MOH London$1,123 CAD

22 data points across 7 retailers

7 retailers$324 CAD to $1,014 CAD

B+
Cheapest Retailer
-
$324 CAD
A
Retailer 2
-
$436 CAD
View
A
Retailer 3
-
$527 CAD
View
A
Retailer 4
-
$617 CAD
View
A
Retailer 5
-
$729 CAD
View
B+
Retailer 6
-
$1,014 CAD
View
Most Expensive
MOH London
323071049 · Oct 26
$1,123 CAD
£633 GBP
View
Price last confirmed 10 days ago
6 more retailers have this diamond
Prices start from $324 CADSave up to $690 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
1.03ct Round
$324 CAD