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Radiant|Natural|IGI

1.51ct K SI2 Radiant Natural Diamond

VG • K/SI2 • IGI 660411129

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

Certificate IGI 660411129

Diamond specifications and retailer prices

From $2,522 AUD
As of November 4, 2026
Save $4,231 AUD (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,753 AUD 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 660411129. Listed at 13 retailers as of November 4, 2026, with prices from $2,522 to $6,753, a $4,231 spread on the same certified stone. NZ Jewellers lists it at $6,753. 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
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle45.8°
Pavilion angle31.6°
OriginNatural
Grading LabIGI
CertificateIGI 660411129
Dimensions7.20 × 5.77 × 3.99 mm
L/W Ratio1.25
Culet sizePointed
Top View
7.20 mm5.77 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 660411129
Side View
Table 66.0%Crown 45.8°Girdle: MED-STKPavilion 31.6°Culet: NoneDepth 69.2%

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 4
Current: $6,753 AUD|Low: $2,522 AUD|High: $6,753 AUD|Avg: $3,381 AUD
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
November 6, 2026
Retailer 10$2,522 AUD
Retailer 12$2,704 AUD
Retailer 2$2,758 AUD
Retailer 8$2,768 AUD
Retailer 13$2,768 AUD
Retailer 3$2,770 AUD
Retailer 9$2,896 AUD
Retailer 11$2,905 AUD
Retailer 4$2,968 AUD
Retailer 14$3,195 AUD
Retailer 5$3,294 AUD
Retailer 6$3,783 AUD
Retailer 7$4,849 AUD
NZ Jewellers$6,753 AUD

38 data points across 14 retailers

13 retailers$2,522 AUD to $6,753 AUD

A
Cheapest Retailer
-
$2,522 AUD
B+
Retailer 2
-
$2,704 AUD
View
A
Retailer 3
-
$2,758 AUD
View
B+
Retailer 4
-
$2,768 AUD
View
Retailer 5
-
$2,768 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$2,770 AUD
View
B+
Retailer 7
-
$2,896 AUD
View
B+
Retailer 8
-
$2,905 AUD
View
B+
Retailer 9
-
$2,968 AUD
View
Retailer 10
-
$3,195 AUD
View
Price last confirmed 61 days ago
B+
Retailer 11
-
$3,195 AUD
View
B+
Retailer 12
-
$4,849 AUD
View
Most Expensive
B
NZ Jewellers
befa1d0d-51a9-4245-bdd3-d044f374e15d · Nov 5
$6,753 AUD
$4,640 USD
View
12 more retailers have this diamond
Prices start from $2,522 AUDSave up to $4,231 AUD

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
$2,522 AUD