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Round|Lab Grown|IGI

1.51ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG442069317

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442069317

Diamond specifications and retailer prices

From $1,676 CAD
$1,200 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $1,676 CAD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

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 LG442069317 or 442069317. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442069317
Dimensions7.39 × 7.37 × 4.47 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.39 mm7.37 mm1.51 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442069317
Side View
Table 59.5%Crown 35.8°Girdle: MediumPavilion 40.1°Culet: NoneDepth 60.5%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $1,676 CAD|Low: $1,369 CAD|High: $4,216 CAD|Avg: $2,799 CAD|-23.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
June 13, 2026
Retailer 2$1,369 CAD
Brilliant Earth$1,676 CAD
Retailer 5$2,137 CAD
Retailer 6$2,690 CAD
Retailer 3$3,731 CAD
Retailer 4$4,216 CAD

24 data points across 6 retailers

1 retailer

B+
Brilliant Earth
19750114A · Oct 31
$1,676 CAD
$1,200 USD
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B+
1.51ct Round
$1,676 CAD