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Radiant|Natural|HRD

1.51ct D SI2 Radiant Natural Diamond

ID • D/SI2 • HRD 260000205966

Certificate HRD 260000205966

Diamond specifications and retailer prices

From $6,640 AUD
$4,664 USD
As of October 29, 2026
Save $4,929 AUD (43%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $11,568 AUD at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 260000205966. Listed at 5 retailers as of October 30, 2026, with prices from $6,640 to $11,568, a $4,929 spread on the same certified stone. NZ Jewellers lists it at $11,568. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Pavilion angle60.73°
OriginNatural
Grading LabHRD
CertificateHRD 260000205966
Dimensions7.88 × 5.75 × 3.86 mm
L/W Ratio1.37
Top View
7.88 mm5.75 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateHRD 260000205966
Side View
Table 63.0%CrownGirdle: MediumPavilion 60.73°CuletDepth 67.1%

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: Oct 29
Current: $11,568 AUD|Low: $6,640 AUD|High: $11,568 AUD|Avg: $8,550 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4$6,640 AUD
Retailer 5$6,640 AUD
Retailer 3$7,685 AUD
Retailer 2$10,575 AUD
NZ Jewellers$11,568 AUD

21 data points across 5 retailers

5 retailers$6,640 AUD to $11,568 AUD

A
Cheapest Retailer
-
$6,640 AUD
$4,664 USD
A
Retailer 2
-
$6,640 AUD
$4,664 USD
View
A
Retailer 3
-
$7,685 AUD
€5,141 EUR
View
B+
Retailer 4
-
$10,575 AUD
£5,849 GBP
View
Most Expensive
B+
NZ Jewellers
1c265227-8069-4298-a570-1f0072c3d7a4 · Oct 30
$11,568 AUD
$8,126 USD
View
4 more retailers have this diamond
Prices start from $6,640 AUDSave up to $4,929 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
$6,640 AUD