Radiant|Lab Grown|IGI

1.51ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG604313122

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

Certificate IGI LG604313122

Diamond specifications and retailer prices

From $1,295 NZD
As of November 2, 2026
Save $474 NZD (27%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,057 NZD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG604313122 or 604313122. Listed at 20 retailers as of November 1, 2026, with a 37% 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 angle38.2°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG604313122
Dimensions5.51 × 8.35 × 3.84 mm
L/W Ratio1.52
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
5.51 mm8.35 mm1.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG604313122
Side View
Table 67.0%Crown 38.2°Girdle: Slightly ThickPavilion 36.8°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $750 NZD|Low: $367 NZD|High: $2,057 NZD|Avg: $1,057 NZD|+6.5%
Retailer 1
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
Reve Diamonds
October 28, 2026
Retailer 2$374 NZD
Retailer 6$408 NZD
Retailer 8$488 NZD
Retailer 9$713 NZD
Retailer 3$729 NZD
Retailer 1$750 NZD
Retailer 7$812 NZD
Retailer 14$834 NZD
Retailer 10$970 NZD
Retailer 5$1,306 NZD
Retailer 13$1,343 NZD
Retailer 15$1,433 NZD
Retailer 12$1,535 NZD
Retailer 4$1,731 NZD
Retailer 11$1,948 NZD
Reve Diamonds$2,057 NZD

31 data points across 16 retailers

20 retailers$1,295 NZD to $1,769 NZD

Retailer 1
-
$328 NZD
Price last confirmed 36 days ago
Retailer 2
-
$381 NZD
View
Price last confirmed 39 days ago
Retailer 3
-
$403 NZD
View
Price last confirmed 37 days ago
Retailer 4
-
$488 NZD
View
Price last confirmed 8 days ago
Retailer 5
-
$713 NZD
View
Price last confirmed 9 days ago
Retailer 6
-
$729 NZD
View
Price last confirmed 8 days ago
Retailer 7
-
$750 NZD
View
Price last confirmed 8 days ago
Retailer 8
-
$834 NZD
View
Price last confirmed 9 days ago
Retailer 9
-
$839 NZD
View
Price last confirmed 36 days ago
Retailer 10
-
$970 NZD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
$1,295 NZD
View
B+
Retailer 12
-
$1,306 NZD
View
Retailer 13
-
$1,311 NZD
View
Price last confirmed 36 days ago
Retailer 14
-
$1,343 NZD
View
Price last confirmed 10 days ago
Retailer 15
-
$1,433 NZD
View
Price last confirmed 8 days ago
Retailer 16
-
$1,535 NZD
View
Price last confirmed 18 days ago
Retailer 17
-
$1,731 NZD
View
Price last confirmed 8 days ago
B
Retailer 18
-
$1,769 NZD
View
Retailer 19
-
$1,948 NZD
View
Price last confirmed 11 days ago
Most Expensive
Reve Diamonds
81654C89B · Oct 28
$2,057 NZD
$1,159 USD
View
Price last confirmed 8 days ago
19 more retailers have this diamond
Prices start from $1,295 NZDSave up to $474 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.

B+
1.51ct Radiant
$1,295 NZD