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Radiant|Lab Grown|IGI

1.51ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG529268252

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG529268252

Diamond specifications and retailer prices

From $1,772 CAD
As of November 6, 2026
Save $2,715 CAD (61%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,756 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG529268252 or 529268252. Listed at 12 retailers as of November 4, 2026, with a 153% 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

1.51
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.4°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529268252
Dimensions8.18 × 5.71 × 3.76 mm
L/W Ratio1.43
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
8.18 mm5.71 mm1.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529268252
Side View
Table 65.0%Crown 43.4°Girdle: MED-STKPavilion 33.1°Culet: NoneDepth 65.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,549 CAD|Low: $1,772 CAD|High: $7,342 CAD|Avg: $3,543 CAD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$1,772 CAD
Retailer 4$2,187 CAD
Retailer 8$2,447 CAD
Retailer 6$2,538 CAD
Retailer 1$3,549 CAD
Retailer 7$3,993 CAD
Retailer 3$4,487 CAD
Retailer 2$7,226 CAD

44 data points across 8 retailers

12 retailers$1,772 CAD to $4,487 CAD

B
Cheapest Retailer
-
$1,772 CAD
B
Retailer 2
-
$2,187 CAD
View
B
Retailer 3
-
$2,380 CAD
View
B
Retailer 4
-
$2,447 CAD
View
Final sale: no returns
Retailer 5
-
$2,538 CAD
View
Price last confirmed 26 days ago
B
Retailer 6
-
$2,538 CAD
View
B
Retailer 7
-
$2,778 CAD
View
B
Retailer 8
-
$3,549 CAD
View
B
Retailer 9
-
$3,993 CAD
View
B
Retailer 10
-
$4,487 CAD
View
Most Expensive
NZ Jewellers
36531f11-e63d-41de-ab1f-f7970f6a3652 · Nov 6
$4,756 CAD
$3,381 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,772 CADSave up to $2,715 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
1.51ct Radiant
$1,772 CAD