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Radiant|Natural|IGI

1.51ct H SI1 Radiant Natural Diamond

VG • H/SI1 • IGI 828653791

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

Certificate IGI 828653791

Diamond specifications and retailer prices

From $7,600 NZD
As of November 6, 2026
Save $7,814 NZD (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $15,414 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 828653791. Listed at 16 retailers as of November 5, 2026, with prices from $7,600 to $15,414, a $7,814 spread on the same certified stone. NZ Jewellers lists it at $15,414. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle51.1°
Pavilion angle28.7°
OriginNatural
Grading LabIGI
CertificateIGI 828653791
Dimensions7.61 × 5.56 × 3.71 mm
L/W Ratio1.37
Culet sizeNone
Top View
7.61 mm5.56 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 828653791
Side View
Table 67.0%Crown 51.1°Girdle: STK-THKPavilion 28.7°Culet: NoneDepth 66.7%

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 6
Current: $15,414 NZD|Low: $7,600 NZD|High: $15,725 NZD|Avg: $9,703 NZD|-2.0%
NZ Jewellers
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
November 7, 2026
Retailer 12$7,600 NZD
Retailer 2$7,721 NZD
Retailer 11$8,044 NZD
Retailer 6$8,103 NZD
Retailer 13$8,166 NZD
Retailer 9$8,715 NZD
Retailer 10$8,745 NZD
Retailer 7$8,780 NZD
Retailer 5$8,846 NZD
Retailer 14$8,985 NZD
Retailer 8$9,025 NZD
Retailer 15$9,265 NZD
Retailer 16$10,055 NZD
Retailer 3$10,795 NZD
Retailer 4$14,052 NZD
NZ Jewellers$15,414 NZD

15 data points across 16 retailers

16 retailers$7,600 NZD to $15,414 NZD

A
Cheapest Retailer
-
$7,600 NZD
A
Retailer 2
-
$7,721 NZD
View
A
Retailer 3
-
$8,044 NZD
View
Final sale: no returns
A
Retailer 4
-
$8,103 NZD
View
A
Retailer 5
-
$8,166 NZD
View
A
Retailer 6
-
$8,715 NZD
View
A
Retailer 7
-
$8,745 NZD
View
B+
Retailer 8
-
$8,780 NZD
View
A
Retailer 9
-
$8,846 NZD
View
A
Retailer 10
-
$8,985 NZD
View
Retailer 11
-
$9,025 NZD
View
Price last confirmed 9 days ago
A
Retailer 12
-
$9,265 NZD
View
B+
Retailer 13
-
$10,055 NZD
View
B+
Retailer 14
-
$10,795 NZD
View
B
Retailer 15
-
$14,052 NZD
View
Most Expensive
B
NZ Jewellers
f83d0672-7283-49fd-af05-b905100c3c1f · Nov 5
$15,414 NZD
$8,545 USD
View
15 more retailers have this diamond
Prices start from $7,600 NZDSave up to $7,814 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
$7,600 NZD