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Radiant|Lab Grown|IGI

1.51ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG563240076

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

Certificate IGI LG563240076

Diamond specifications and retailer prices

From $978 NZD
As of November 6, 2026
Save $3,529 NZD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,506 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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG563240076 or 563240076. Listed at 14 retailers as of November 5, 2026, with prices from $978 to $4,506, a $3,529 spread on the same certified stone. MOH London lists it at $4,506. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.4°
Pavilion angle29.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG563240076
Dimensions7.28 × 5.64 × 3.87 mm
L/W Ratio1.29
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
7.28 mm5.64 mm1.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG563240076
Side View
Table 66.5%Crown 50.4°Girdle: Slightly ThickPavilion 29.9°Culet: NoneDepth 68.6%

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 6
Current: $4,506 NZD|Low: $698 NZD|High: $4,573 NZD|Avg: $1,860 NZD|-1.3%
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
November 6, 2026
Retailer 10$873 NZD
Retailer 3$978 NZD
Retailer 4$978 NZD
Retailer 5$1,064 NZD
Retailer 11$1,082 NZD
Retailer 9$1,335 NZD
Retailer 2$1,575 NZD
Retailer 13$1,687 NZD
Retailer 6$1,775 NZD
Retailer 7$2,120 NZD
Retailer 8$2,910 NZD
Retailer 12$3,480 NZD
MOH London$4,506 NZD

45 data points across 13 retailers

14 retailers$978 NZD to $4,506 NZD

Retailer 1
-
$873 NZD
Price last confirmed 15 days ago
B+
Retailer 2
-
$978 NZD
View
Final sale: no returns
Retailer 3
-
$978 NZD
View
Price last confirmed 14 days ago
B+
Retailer 4
-
$1,064 NZD
View
Retailer 5
-
$1,082 NZD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$1,335 NZD
View
B
Retailer 7
-
$1,575 NZD
View
B
Retailer 8
-
$1,687 NZD
View
B
Retailer 9
-
$1,775 NZD
View
Retailer 10
-
$2,120 NZD
View
Price last confirmed 10 days ago
B
Retailer 11
-
$2,515 NZD
View
B
Retailer 12
-
$2,910 NZD
View
Retailer 13
-
$3,480 NZD
View
Price last confirmed 13 days ago
Most Expensive
B
MOH London
LG563240076 · Nov 5
$4,506 NZD
£1,967 GBP
View
13 more retailers have this diamond
Prices start from $978 NZDSave up to $3,529 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
$978 NZD