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Radiant|Lab Grown|IGI

1.31ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • IGI LG602355231

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

Certificate IGI LG602355231

Diamond specifications and retailer prices

From $221 CAD
$158 USD
As of October 27, 2026
Save $1,903 CAD (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,123 CAD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.31ct lab-grown radiant diamond

This 1.31ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG602355231 or 602355231. Listed at 10 retailers as of October 27, 2026, with prices from $221 to $2,123, a $1,903 spread on the same certified stone. Do Amore Diamonds lists it at $2,123. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.31
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602355231
Dimensions7.82 × 5.30 × 3.59 mm
L/W Ratio1.48
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
7.82 mm5.30 mm1.31 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602355231
Side View
Table 66.0%Crown 42.3°Girdle: MediumPavilion 34°Culet: NoneDepth 67.7%

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: Oct 27
Current: $2,123 CAD|Low: $180 CAD|High: $2,305 CAD|Avg: $966 CAD|+1.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 18, 2026
Retailer 7$221 CAD
Retailer 10$247 CAD
Retailer 8$496 CAD
Retailer 3$514 CAD
Retailer 11$682 CAD
Retailer 12$701 CAD
Retailer 5$765 CAD
Retailer 6$929 CAD
Retailer 4$970 CAD
Retailer 13$1,257 CAD
Retailer 2$1,419 CAD
Retailer 9$1,704 CAD
Do Amore Diamonds$2,123 CAD

14 data points across 13 retailers

10 retailers$221 CAD to $2,123 CAD

A
Cheapest Retailer
-
$221 CAD
$158 USD
A
Retailer 2
-
$247 CAD
$177 USD
View
Final sale: no returns
A
Retailer 3
-
$256 CAD
$183 USD
View
B
Retailer 4
-
$496 CAD
$355 USD
View
B
Retailer 5
-
$929 CAD
$665 USD
View
B
Retailer 6
-
$971 CAD
$695 USD
View
B
Retailer 7
-
$1,257 CAD
$900 USD
View
Retailer 8
-
$1,419 CAD
£800 GBP
View
Price last confirmed 9 days ago
C
Retailer 9
-
$1,704 CAD
$1,220 USD
View
Most Expensive
C
Do Amore Diamonds
27-89282A6CB · Oct 29
$2,123 CAD
$1,520 USD
View
9 more retailers have this diamond
Prices start from $221 CADSave up to $1,903 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
1.31ct Radiant
$221 CAD