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Radiant|Lab Grown|IGI

1.51ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG647447909

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

Certificate IGI LG647447909

Diamond specifications and retailer prices

From $436 NZD
As of November 4, 2026
Save $3,183 NZD (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,619 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG647447909 or 647447909. Listed at 23 retailers as of October 31, 2026, with prices from $436 to $3,619, a $3,183 spread on the same certified stone. Brilliant Earth lists it at $3,619. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647447909
Dimensions8.24 × 5.62 × 3.80 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.24 mm5.62 mm1.51 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647447909
Side View
Table 66.0%Crown 43.6°Girdle: MediumPavilion 35.1°Culet: NoneDepth 67.6%

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: Nov 4
Current: $3,619 NZD|Low: $422 NZD|High: $3,619 NZD|Avg: $1,235 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 17
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Retailer 19
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Retailer 21
Retailer 22
November 5, 2026
Retailer 19$436 NZD
Retailer 20$486 NZD
Retailer 6$506 NZD
Retailer 11$523 NZD
Retailer 2$541 NZD
Retailer 18$600 NZD
Retailer 9$800 NZD
Retailer 8$903 NZD
Retailer 4$907 NZD
Retailer 14$931 NZD
Retailer 16$1,017 NZD
Retailer 12$1,102 NZD
Retailer 7$1,222 NZD
Retailer 21$1,737 NZD
Retailer 3$1,742 NZD
Retailer 22$1,827 NZD
Retailer 10$1,907 NZD
Retailer 15$2,065 NZD
Retailer 13$2,125 NZD
Retailer 17$2,157 NZD
Retailer 5$2,375 NZD
Brilliant Earth$3,619 NZD

29 data points across 22 retailers

23 retailers$436 NZD to $3,619 NZD

A
Cheapest Retailer
-
$436 NZD
A
Retailer 2
-
$486 NZD
View
Final sale: no returns
A
Retailer 3
-
$506 NZD
View
Retailer 4
-
$523 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$541 NZD
View
A
Retailer 6
-
$600 NZD
View
A
Retailer 7
-
$800 NZD
View
A
Retailer 8
-
$903 NZD
View
A
Retailer 9
-
$907 NZD
View
A
Retailer 10
-
$931 NZD
View
B+
Retailer 11
-
$1,017 NZD
View
B+
Retailer 12
-
$1,102 NZD
View
B+
Retailer 13
-
$1,222 NZD
View
B
Retailer 14
-
$1,719 NZD
View
B
Retailer 15
-
$1,737 NZD
View
B
Retailer 16
-
$1,742 NZD
View
B
Retailer 17
-
$1,827 NZD
View
Retailer 18
-
$1,907 NZD
View
Price last confirmed 18 days ago
B
Retailer 19
-
$2,065 NZD
View
B
Retailer 20
-
$2,125 NZD
View
B
Retailer 21
-
$2,157 NZD
View
B
Retailer 22
-
$2,375 NZD
View
Most Expensive
B
Brilliant Earth
11455390A · Oct 31
$3,619 NZD
$2,040 USD
View
22 more retailers have this diamond
Prices start from $436 NZDSave up to $3,183 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
1.51ct Radiant
$436 NZD