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Radiant|Lab Grown|IGI

1.51ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG508151920

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

Certificate IGI LG508151920

Diamond specifications and retailer prices

From $749 NZD
As of November 3, 2026
Save $3,777 NZD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $7,061 NZD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore 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 LG508151920 or 508151920. Listed at 23 retailers as of November 3, 2026, with a 505% 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 angle44.1°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508151920
Dimensions7.76 × 5.70 × 3.90 mm
L/W Ratio1.36
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
7.76 mm5.70 mm1.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508151920
Side View
Table 67.0%Crown 44.1°Girdle: STK-THKPavilion 37°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 3
Current: $7,061 NZD|Low: $763 NZD|High: $7,061 NZD|Avg: $2,327 NZD
Do Amore Diamonds
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 5$795 NZD
Retailer 9$889 NZD
Retailer 17$891 NZD
Retailer 3$985 NZD
Retailer 4$985 NZD
Retailer 11$1,267 NZD
Retailer 8$1,545 NZD
Retailer 14$1,756 NZD
Retailer 10$1,792 NZD
Retailer 12$1,875 NZD
Retailer 16$2,649 NZD
Retailer 7$2,860 NZD
Retailer 15$2,963 NZD
Retailer 6$3,686 NZD
Retailer 13$4,101 NZD
Retailer 2$4,525 NZD
Do Amore Diamonds$7,061 NZD

40 data points across 17 retailers

23 retailers$749 NZD to $4,525 NZD

A
Cheapest Retailer
-
$749 NZD
A
Retailer 2
-
$795 NZD
View
A
Retailer 3
-
$889 NZD
View
Final sale: no returns
A
Retailer 4
-
$891 NZD
View
Retailer 5
-
$985 NZD
View
Price last confirmed 20 days ago
A
Retailer 6
-
$985 NZD
View
B+
Retailer 7
-
$1,242 NZD
View
B+
Retailer 8
-
$1,267 NZD
View
B+
Retailer 9
-
$1,407 NZD
View
B+
Retailer 10
-
$1,545 NZD
View
Retailer 11
-
$1,756 NZD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
$1,792 NZD
View
B+
Retailer 13
-
$1,875 NZD
View
B
Retailer 14
-
$2,634 NZD
View
B
Retailer 15
-
$2,649 NZD
View
B
Retailer 16
-
$2,860 NZD
View
B
Retailer 17
-
$2,963 NZD
View
B
Retailer 18
-
$3,163 NZD
View
B
Retailer 19
-
$3,686 NZD
View
B
Retailer 20
-
$3,750 NZD
View
B
Retailer 21
-
$4,101 NZD
View
B
Retailer 22
-
$4,525 NZD
View
Most Expensive
Do Amore Diamonds
27-9D9268BDC · Nov 4
$7,061 NZD
$3,980 USD
View
Price under review
22 more retailers have this diamond
Prices start from $749 NZDSave up to $3,777 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
$749 NZD