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Princess|Lab Grown|IGI

1.51ct G VS1 Princess Lab Grown Diamond

ID • G/VS1 • IGI LG629441721

Shape and cutting style on the report: Princess cut

Certificate IGI LG629441721

Diamond specifications and retailer prices

From $427 NZD
As of November 4, 2026
Save $1,726 NZD (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,953 NZD at Brilliant Earth · As of October 22, 2026
View at Brilliant Earth

About this 1.51ct lab-grown princess diamond

This 1.51ct lab-grown princess sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG629441721 or 629441721. Listed at 20 retailers as of November 4, 2026, with a 404% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.7°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629441721
Dimensions6.20 × 6.18 × 4.50 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.20 mm6.18 mm1.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629441721
Side View
Table 70.0%Crown 43.7°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 72.8%

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: $2,953 NZD|Low: $409 NZD|High: $2,953 NZD|Avg: $1,100 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 18$427 NZD
Retailer 8$479 NZD
Retailer 9$495 NZD
Retailer 4$530 NZD
Retailer 7$530 NZD
Retailer 2$614 NZD
Retailer 17$712 NZD
Retailer 14$913 NZD
Retailer 15$955 NZD
Retailer 10$975 NZD
Retailer 11$993 NZD
Retailer 12$1,236 NZD
Retailer 16$1,357 NZD
Retailer 6$1,702 NZD
Retailer 3$1,779 NZD
Retailer 13$2,120 NZD
Retailer 5$2,152 NZD
Brilliant Earth$2,953 NZD

45 data points across 18 retailers

20 retailers$427 NZD to $2,152 NZD

A
Cheapest Retailer
-
$427 NZD
A
Retailer 2
-
$479 NZD
View
Final sale: no returns
A
Retailer 3
-
$495 NZD
View
A
Retailer 4
-
$530 NZD
View
Retailer 5
-
$530 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$614 NZD
View
B+
Retailer 7
-
$712 NZD
View
A
Retailer 8
-
$868 NZD
View
A
Retailer 9
-
$913 NZD
View
Retailer 10
-
$955 NZD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$975 NZD
View
A
Retailer 12
-
$993 NZD
View
B+
Retailer 13
-
$1,236 NZD
View
B+
Retailer 14
-
$1,357 NZD
View
B
Retailer 15
-
$1,702 NZD
View
B
Retailer 16
-
$1,779 NZD
View
B
Retailer 17
-
$1,793 NZD
View
B
Retailer 18
-
$2,120 NZD
View
B
Retailer 19
-
$2,152 NZD
View
Most Expensive
Brilliant Earth
21312267A · Oct 22
$2,953 NZD
$1,660 USD
View
Price last confirmed 14 days ago
19 more retailers have this diamond
Prices start from $427 NZDSave up to $1,726 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 Princess
$427 NZD