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Round|Lab Grown|IGI

1.51ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG781631505

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781631505

Diamond specifications and retailer prices

From $370 NZD
As of November 5, 2026
Save $1,676 NZD (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,046 NZD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round 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 LG781631505 or 781631505. Listed at 18 retailers as of November 5, 2026, with prices from $370 to $2,046, a $1,676 spread on the same certified stone. Brilliant Earth lists it at $2,046. 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 angle32.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781631505
Dimensions7.39 × 7.37 × 4.50 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.37 mm1.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781631505
Side View
Table 59.0%Crown 32.9°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.0%

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 5
Current: $2,046 NZD|Low: $370 NZD|High: $2,241 NZD|Avg: $1,007 NZD|-8.7%
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 8$370 NZD
Retailer 4$413 NZD
Retailer 3$429 NZD
Retailer 16$459 NZD
Retailer 9$461 NZD
Retailer 11$713 NZD
Retailer 5$790 NZD
Retailer 15$792 NZD
Retailer 10$795 NZD
Retailer 18$1,046 NZD
Retailer 14$1,069 NZD
Retailer 13$1,215 NZD
Retailer 12$1,281 NZD
Retailer 17$1,476 NZD
Retailer 6$1,487 NZD
Retailer 7$1,569 NZD
Retailer 2$1,834 NZD
Brilliant Earth$2,046 NZD

31 data points across 18 retailers

18 retailers$370 NZD to $2,046 NZD

A
Cheapest Retailer
-
$370 NZD
A
Retailer 2
-
$413 NZD
View
Final sale: no returns
A
Retailer 3
-
$429 NZD
View
A
Retailer 4
-
$459 NZD
View
Retailer 5
-
$461 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$713 NZD
View
B+
Retailer 7
-
$790 NZD
View
A
Retailer 8
-
$792 NZD
View
A
Retailer 9
-
$795 NZD
View
A
Retailer 10
-
$1,046 NZD
View
A
Retailer 11
-
$1,069 NZD
View
B+
Retailer 12
-
$1,215 NZD
View
B+
Retailer 13
-
$1,281 NZD
View
B+
Retailer 14
-
$1,476 NZD
View
B+
Retailer 15
-
$1,487 NZD
View
B+
Retailer 16
-
$1,569 NZD
View
B+
Retailer 17
-
$1,834 NZD
View
Most Expensive
B
Brilliant Earth
21501944A · Nov 5
$2,046 NZD
$1,150 USD
View
17 more retailers have this diamond
Prices start from $370 NZDSave up to $1,676 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 Round
$370 NZD