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Radiant|Lab Grown|IGI

1.56ct H SI1 Radiant Lab Grown Diamond

ID • H/SI1 • IGI LG512224126

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

Certificate IGI LG512224126

Diamond specifications and retailer prices

From $1,397 CAD
$1,000 USD
As of October 30, 2026
Save $5,525 CAD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,922 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.56ct lab-grown radiant diamond

This 1.56ct lab-grown radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512224126 or 512224126. Listed at 10 retailers as of October 29, 2026, with prices from $1,397 to $6,922, a $5,525 spread on the same certified stone. MOH London lists it at $6,922. 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

1.56
Carat
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512224126
Dimensions7.91 × 6.11 × 3.93 mm
L/W Ratio1.29
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
7.91 mm6.11 mm1.56 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512224126
Side View
Table 66.5%Crown 38.1°Girdle: Slightly ThickPavilion 35.6°Culet: NoneDepth 64.3%

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 30
Current: $6,922 CAD|Low: $1,397 CAD|High: $6,977 CAD|Avg: $3,544 CAD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2$1,397 CAD
Retailer 3$2,079 CAD
Retailer 4$2,411 CAD
Retailer 6$2,647 CAD
Retailer 8$3,269 CAD
Retailer 5$3,798 CAD
Retailer 7$4,375 CAD
MOH London$6,922 CAD

13 data points across 8 retailers

10 retailers$1,397 CAD to $6,922 CAD

A
Cheapest Retailer
-
$1,397 CAD
$1,000 USD
B+
Retailer 2
-
$2,079 CAD
$1,488 USD
View
B+
Retailer 3
-
$2,262 CAD
$1,619 USD
View
Retailer 4
-
$2,411 CAD
$1,726 USD
View
Price last confirmed 18 days ago
B+
Retailer 5
-
$2,411 CAD
$1,726 USD
View
B+
Retailer 6
-
$2,647 CAD
$1,895 USD
View
B
Retailer 7
-
$3,798 CAD
$2,719 USD
View
B
Retailer 8
-
$4,375 CAD
$3,132 USD
View
B
Retailer 9
-
$4,519 CAD
$3,235 USD
View
Most Expensive
B
MOH London
LG512224126 · Oct 29
$6,922 CAD
£3,902 GBP
View
9 more retailers have this diamond
Prices start from $1,397 CADSave up to $5,525 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
1.56ct Radiant
$1,397 CAD