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Radiant|Natural|GIA

1.51ct D SI2 Radiant Natural Diamond

ID • D/SI2 • GIA 1538968465

Certificate GIA 1538968465

Diamond specifications and retailer prices

From $6,068 AUD
HK$33,300 HKD
As of November 1, 2026
Save $6,300 AUD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $14,962 AUD at NZ Jewellers · As of September 25, 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 1538968465. Listed at 15 retailers as of November 1, 2026, with a 104% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryExcellent
FluorescenceNone
Pavilion angle35.3°
OriginNatural
Grading LabGIA
CertificateGIA 1538968465
Dimensions7.43 × 5.71 × 3.98 mm
L/W Ratio1.30
Girdle conditionPolished
Top View
7.43 mm5.71 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1538968465
Side View
Table 69.0%CrownGirdle: STK-THKPavilion 35.3°Culet: NoneDepth 69.7%

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 1
Current: $6,068 AUD|Low: $6,068 AUD|High: $13,321 AUD|Avg: $8,179 AUD|-3.2%
Retailer 1
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 1, 2026
Retailer 1$6,068 AUD
Retailer 4$6,257 AUD
Retailer 5$6,413 AUD
Retailer 11$6,536 AUD
Retailer 12$6,868 AUD
Retailer 9$7,020 AUD
Retailer 6$7,221 AUD
Retailer 2$7,260 AUD
Retailer 8$7,625 AUD
Retailer 3$8,983 AUD
Retailer 10$9,051 AUD
Retailer 7$12,368 AUD
Retailer 13$12,753 AUD

36 data points across 13 retailers

15 retailers$6,068 AUD to $12,368 AUD

A
Cheapest Retailer
-
$6,068 AUD
HK$33,300 HKD
A
Retailer 2
-
$6,257 AUD
$4,395 USD
View
Retailer 3
-
$6,413 AUD
$4,505 USD
View
Price last confirmed 25 days ago
A
Retailer 4
-
$6,536 AUD
$4,591 USD
View
A
Retailer 5
-
$6,868 AUD
$4,825 USD
View
A
Retailer 6
-
$7,020 AUD
$4,931 USD
View
Final sale: no returns
A
Retailer 7
-
$7,221 AUD
$5,073 USD
View
A
Retailer 8
-
$7,260 AUD
$5,100 USD
View
A
Retailer 9
-
$7,625 AUD
£4,218 GBP
View
A
Retailer 10
-
$8,206 AUD
View
A
Retailer 11
-
$8,983 AUD
SGD 8,527 SGD
View
A
Retailer 12
-
$9,051 AUD
€6,055 EUR
View
B+
Retailer 13
-
$12,368 AUD
£6,841 GBP
View
Retailer 14
-
$12,753 AUD
$8,959 USD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
3878d734-e09f-4865-ac8f-21f2881f453b · Sep 25
$14,962 AUD
$10,510 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $6,068 AUDSave up to $6,300 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
$6,068 AUD