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1.51ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG487172906

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487172906

Diamond specifications and retailer prices

From $1,173 CAD
$840 USD
As of October 31, 2026
Save $4,944 CAD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,117 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG487172906 or 487172906. Listed at 11 retailers as of October 29, 2026, with prices from $1,173 to $6,117, a $4,944 spread on the same certified stone. MOH London lists it at $6,117. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487172906
Dimensions7.28 × 7.31 × 4.62 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.28 mm7.31 mm1.51 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487172906
Side View
Table 57.5%Crown 35°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.3%

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: Oct 31
Current: $6,117 CAD|Low: $1,173 CAD|High: $6,158 CAD|Avg: $2,583 CAD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2$1,173 CAD
Retailer 5$1,633 CAD
Retailer 9$1,775 CAD
Retailer 8$1,829 CAD
Retailer 6$1,894 CAD
Retailer 11$1,894 CAD
Retailer 12$2,137 CAD
Retailer 4$2,690 CAD
Retailer 7$3,008 CAD
Retailer 10$3,550 CAD
Retailer 3$3,731 CAD
MOH London$6,117 CAD

15 data points across 12 retailers

11 retailers$1,173 CAD to $6,117 CAD

A
Cheapest Retailer
-
$1,173 CAD
$840 USD
B+
Retailer 2
-
$1,633 CAD
$1,169 USD
View
B+
Retailer 3
-
$1,775 CAD
$1,271 USD
View
B+
Retailer 4
-
$1,829 CAD
$1,309 USD
View
Final sale: no returns
Retailer 5
-
$1,894 CAD
$1,356 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$1,894 CAD
$1,356 USD
View
B+
Retailer 7
-
$2,137 CAD
$1,530 USD
View
B
Retailer 8
-
$3,008 CAD
$2,153 USD
View
B
Retailer 9
-
$3,550 CAD
$2,541 USD
View
B
Retailer 10
-
$3,731 CAD
$2,671 USD
View
Most Expensive
B
MOH London
LG487172906 · Oct 29
$6,117 CAD
£3,448 GBP
View
10 more retailers have this diamond
Prices start from $1,173 CADSave up to $4,944 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 Round
$1,173 CAD