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Radiant|Lab Grown|IGI

1.51ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG778659554

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

Certificate IGI LG778659554

Diamond specifications and retailer prices

From $364 NZD
As of November 4, 2026
Save $1,736 NZD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,100 NZD at MOH London · As of November 5, 2026
View at MOH London

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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778659554 or 778659554. Listed at 17 retailers as of November 4, 2026, with prices from $364 to $2,100, a $1,736 spread on the same certified stone. MOH London lists it at $2,100. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778659554
Dimensions8.20 × 5.60 × 3.83 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.20 mm5.60 mm1.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778659554
Side View
Table 65.0%Crown 42.4°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 68.4%

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: Nov 4
Current: $2,100 NZD|Low: $353 NZD|High: $2,120 NZD|Avg: $1,032 NZD|+13.8%
MOH London
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
Retailer 15
Retailer 16
Retailer 17
November 5, 2026
Retailer 3$364 NZD
Retailer 17$404 NZD
Retailer 13$420 NZD
Retailer 7$451 NZD
Retailer 8$452 NZD
Retailer 12$777 NZD
Retailer 4$779 NZD
Retailer 15$871 NZD
Retailer 16$1,038 NZD
Retailer 11$1,048 NZD
Retailer 10$1,185 NZD
Retailer 2$1,393 NZD
Retailer 14$1,448 NZD
Retailer 5$1,464 NZD
Retailer 6$1,542 NZD
Retailer 9$1,756 NZD
MOH London$2,100 NZD

37 data points across 17 retailers

17 retailers$364 NZD to $2,100 NZD

A
Cheapest Retailer
-
$364 NZD
A
Retailer 2
-
$404 NZD
View
Final sale: no returns
A
Retailer 3
-
$420 NZD
View
A
Retailer 4
-
$451 NZD
View
Retailer 5
-
$452 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$777 NZD
View
B+
Retailer 7
-
$779 NZD
View
A
Retailer 8
-
$871 NZD
View
A
Retailer 9
-
$1,038 NZD
View
A
Retailer 10
-
$1,048 NZD
View
A
Retailer 11
-
$1,185 NZD
View
B+
Retailer 12
-
$1,393 NZD
View
B+
Retailer 13
-
$1,448 NZD
View
B+
Retailer 14
-
$1,464 NZD
View
B+
Retailer 15
-
$1,542 NZD
View
B+
Retailer 16
-
$1,756 NZD
View
Most Expensive
B
MOH London
LG778659554 · Nov 5
$2,100 NZD
£932 GBP
View
16 more retailers have this diamond
Prices start from $364 NZDSave up to $1,736 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
$364 NZD