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Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 5393568057

Certificate GIA 5393568057

Diamond specifications and retailer prices

From $5,242 AUD
HK$28,700 HKD
As of November 1, 2026
Save $7,084 AUD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $12,326 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5393568057. Listed at 16 retailers as of October 30, 2026, with prices from $5,242 to $12,326, a $7,084 spread on the same certified stone. NZ Jewellers lists it at $12,326. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5393568057
Dimensions7.41 × 5.65 × 3.88 mm
L/W Ratio1.31
Top View
7.41 mm5.65 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5393568057
Side View
Table 66.0%CrownGirdle: SLI-THKPavilionCulet: NoneDepth 68.8%

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: $12,326 AUD|Low: $5,205 AUD|High: $12,326 AUD|Avg: $7,505 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
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 13$5,242 AUD
Retailer 6$5,900 AUD
Retailer 9$6,170 AUD
Retailer 4$6,274 AUD
Retailer 3$6,529 AUD
Retailer 2$6,901 AUD
Retailer 11$7,035 AUD
Retailer 14$7,075 AUD
Retailer 15$7,075 AUD
Retailer 16$7,075 AUD
Retailer 7$7,163 AUD
Retailer 5$7,291 AUD
Retailer 10$8,004 AUD
Retailer 17$8,163 AUD
Retailer 8$8,609 AUD
Retailer 12$11,268 AUD
NZ Jewellers$12,326 AUD

26 data points across 17 retailers

16 retailers$5,242 AUD to $12,326 AUD

A
Cheapest Retailer
-
$5,242 AUD
HK$28,700 HKD
A
Retailer 2
-
$6,170 AUD
$4,324 USD
View
A
Retailer 3
-
$6,274 AUD
$4,397 USD
View
B+
Retailer 4
-
$6,529 AUD
$4,576 USD
View
Final sale: no returns
Retailer 5
-
$6,673 AUD
SGD 6,320 SGD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$6,901 AUD
£3,808 GBP
View
A
Retailer 7
-
$7,035 AUD
£3,882 GBP
View
B+
Retailer 8
-
$7,075 AUD
$4,958 USD
View
A
Retailer 9
-
$7,075 AUD
$4,958 USD
View
A
Retailer 10
-
$7,075 AUD
$4,958 USD
View
B+
Retailer 11
-
$7,163 AUD
$5,020 USD
View
B+
Retailer 12
-
$7,291 AUD
$5,110 USD
View
B+
Retailer 13
-
$8,004 AUD
€5,342 EUR
View
B+
Retailer 14
-
$8,163 AUD
$5,721 USD
View
B
Retailer 15
-
$11,268 AUD
£6,218 GBP
View
Most Expensive
B
NZ Jewellers
968484e3-63f5-41a0-b601-95c083e8afb6 · Oct 30
$12,326 AUD
$8,638 USD
View
15 more retailers have this diamond
Prices start from $5,242 AUDSave up to $7,084 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
$5,242 AUD