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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 $280 NZD
$158 USD
As of October 27, 2026
Save $2,417 NZD (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,697 NZD 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 $280 to $2,697, a $2,417 spread on the same certified stone. Do Amore Diamonds lists it at $2,697. 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
Colour
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

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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 27
Current: $2,697 NZD|Low: $229 NZD|High: $2,928 NZD|Avg: $1,227 NZD|+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$280 NZD
Retailer 10$314 NZD
Retailer 8$630 NZD
Retailer 3$652 NZD
Retailer 11$866 NZD
Retailer 12$891 NZD
Retailer 5$971 NZD
Retailer 6$1,180 NZD
Retailer 4$1,232 NZD
Retailer 13$1,597 NZD
Retailer 2$1,803 NZD
Retailer 9$2,165 NZD
Do Amore Diamonds$2,697 NZD

14 data points across 13 retailers

10 retailers$280 NZD to $2,697 NZD

A
Cheapest Retailer
-
$280 NZD
$158 USD
A
Retailer 2
-
$314 NZD
$177 USD
View
Final sale: no returns
A
Retailer 3
-
$325 NZD
$183 USD
View
B
Retailer 4
-
$630 NZD
$355 USD
View
B
Retailer 5
-
$1,180 NZD
$665 USD
View
B
Retailer 6
-
$1,233 NZD
$695 USD
View
B
Retailer 7
-
$1,597 NZD
$900 USD
View
Retailer 8
-
$1,803 NZD
£800 GBP
View
Price last confirmed 9 days ago
C
Retailer 9
-
$2,165 NZD
$1,220 USD
View
Most Expensive
C
Do Amore Diamonds
27-89282A6CB · Oct 29
$2,697 NZD
$1,520 USD
View
9 more retailers have this diamond
Prices start from $280 NZDSave up to $2,417 NZD

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
$280 NZD