Radiant|Lab Grown|IGI

1.50ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG647447808

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

Certificate IGI LG647447808

Diamond specifications and retailer prices

From $371 NZD
$209 USD
As of October 25, 2026
Save $1,776 NZD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,147 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG647447808 or 647447808. Listed at 16 retailers as of October 25, 2026, with prices from $371 to $2,147, a $1,776 spread on the same certified stone. Brilliant Earth lists it at $2,147. 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

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647447808
Dimensions7.93 × 5.74 × 3.82 mm
L/W Ratio1.38
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.93 mm5.74 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647447808
Side View
Table 66.0%Crown 42.6°Girdle: MediumPavilion 35.3°Culet: NoneDepth 66.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: $2,147 NZD|Low: $348 NZD|High: $2,289 NZD|Avg: $931 NZD|-6.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 14$348 NZD
Retailer 4$366 NZD
Retailer 8$371 NZD
Retailer 11$477 NZD
Retailer 2$659 NZD
Retailer 12$665 NZD
Retailer 3$692 NZD
Retailer 10$702 NZD
Retailer 6$777 NZD
Retailer 5$967 NZD
Retailer 9$1,260 NZD
Retailer 13$1,535 NZD
Retailer 7$1,744 NZD
Brilliant Earth$2,147 NZD

38 data points across 14 retailers

16 retailers$371 NZD to $2,147 NZD

Retailer 1
-
$348 NZD
$196 USD
Price last confirmed 33 days ago
Retailer 2
-
$366 NZD
$206 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$371 NZD
$209 USD
View
Price last confirmed 18 days ago
A
Retailer 4
-
$371 NZD
$209 USD
View
Retailer 5
-
$477 NZD
£212 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
$659 NZD
£292 GBP
View
B+
Retailer 7
-
$665 NZD
$375 USD
View
Retailer 8
-
$692 NZD
£307 GBP
View
Price last confirmed 21 days ago
A
Retailer 9
-
$702 NZD
€377 EUR
View
B+
Retailer 10
-
$777 NZD
$438 USD
View
B+
Retailer 11
-
$967 NZD
$545 USD
View
B
Retailer 12
-
$1,260 NZD
$710 USD
View
B
Retailer 13
-
$1,302 NZD
£578 GBP
View
Retailer 14
-
$1,535 NZD
$865 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$1,744 NZD
£774 GBP
View
Most Expensive
B
Brilliant Earth
11455293A · Oct 29
$2,147 NZD
$1,210 USD
View
15 more retailers have this diamond
Prices start from $371 NZDSave up to $1,776 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
1.50ct Radiant
$371 NZD