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Radiant|Natural|GIA

1.51ct D SI2 Radiant Natural Diamond

ID • D/SI2 • GIA 1232708920

Certificate GIA 1232708920

Diamond specifications and retailer prices

From $9,043 AUD
£5,002 GBP
As of November 1, 2026
Save $7,008 AUD (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $16,051 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 GIA 1232708920. Listed at 6 retailers as of October 30, 2026, with prices from $9,043 to $16,051, a $7,008 spread on the same certified stone. NZ Jewellers lists it at $16,051. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle44.73°
Pavilion angle30.36°
OriginNatural
Grading LabGIA
CertificateGIA 1232708920
Dimensions7.48 × 5.58 × 3.87 mm
L/W Ratio1.34
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle
Top View
7.48 mm5.58 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1232708920
Side View
Table 65.0%Crown 44.73°Girdle: Very ThickPavilion 30.36°Culet: NoneDepth 69.4%

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 1
Current: $16,051 AUD|Low: $9,043 AUD|High: $16,296 AUD|Avg: $11,112 AUD|-1.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2$9,043 AUD
Retailer 9$9,550 AUD
Retailer 4$9,596 AUD
Retailer 5$9,712 AUD
Retailer 6$9,745 AUD
Retailer 7$9,948 AUD
Retailer 8$10,455 AUD
Retailer 3$14,140 AUD
NZ Jewellers$16,051 AUD

29 data points across 9 retailers

6 retailers$9,043 AUD to $16,051 AUD

A
Cheapest Retailer
-
$9,043 AUD
£5,002 GBP
A
Retailer 2
-
$9,596 AUD
$6,741 USD
View
A
Retailer 3
-
$9,712 AUD
$6,822 USD
View
A
Retailer 4
-
$9,745 AUD
$6,845 USD
View
B+
Retailer 5
-
$14,140 AUD
£7,821 GBP
View
Most Expensive
B
NZ Jewellers
94c24dd1-7952-4c3b-bbc0-61c64eb068a7 · Oct 30
$16,051 AUD
$11,275 USD
View
5 more retailers have this diamond
Prices start from $9,043 AUDSave up to $7,008 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
$9,043 AUD