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Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

VG • I/SI2 • GIA 6542413233

Certificate GIA 6542413233

Diamond specifications and retailer prices

From $4,493 AUD
HK$24,600 HKD
As of November 2, 2026
Save $5,477 AUD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,332 AUD at NZ Jewellers · As of October 18, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6542413233. Listed at 18 retailers as of October 29, 2026, with a 122% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542413233
Dimensions7.36 × 5.80 × 4.08 mm
L/W Ratio1.27
Top View
7.36 mm5.80 mm1.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542413233
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.4%

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 2
Current: $10,332 AUD|Low: $4,493 AUD|High: $10,332 AUD|Avg: $6,377 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 2, 2026
Retailer 8$4,493 AUD
Retailer 7$4,776 AUD
Retailer 3$5,281 AUD
Retailer 11$5,438 AUD
Retailer 5$5,704 AUD
Retailer 6$5,930 AUD
Retailer 14$5,930 AUD
Retailer 12$6,029 AUD
Retailer 9$6,104 AUD
Retailer 2$6,121 AUD
Retailer 10$6,666 AUD
Retailer 4$6,843 AUD
Retailer 13$9,971 AUD
NZ Jewellers$10,332 AUD

33 data points across 14 retailers

18 retailers$4,493 AUD to $9,971 AUD

A
Cheapest Retailer
-
$4,493 AUD
HK$24,600 HKD
A
Retailer 2
-
$4,776 AUD
₹318,777 INR
View
A
Retailer 3
-
$5,281 AUD
SGD 5,001 SGD
View
A
Retailer 4
-
$5,438 AUD
$3,811 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,541 AUD
$3,883 USD
View
Retailer 6
-
$5,704 AUD
SGD 5,402 SGD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$5,841 AUD
View
Retailer 8
-
$5,930 AUD
$4,156 USD
View
Price last confirmed 17 days ago
Retailer 9
-
$5,930 AUD
$4,156 USD
View
Price last confirmed 17 days ago
Retailer 10
-
$5,930 AUD
$4,156 USD
View
Price last confirmed 15 days ago
A
Retailer 11
-
$6,029 AUD
£3,327 GBP
View
B+
Retailer 12
-
$6,104 AUD
$4,278 USD
View
B+
Retailer 13
-
$6,121 AUD
$4,290 USD
View
A
Retailer 14
-
$6,666 AUD
€4,449 EUR
View
Retailer 15
-
$6,843 AUD
$4,796 USD
View
Price last confirmed 14 days ago
Retailer 16
-
$6,886 AUD
$4,826 USD
View
Price last confirmed 57 days ago
B
Retailer 17
-
$9,971 AUD
£5,502 GBP
View
Most Expensive
NZ Jewellers
22f46ded-fa04-433c-a764-17a2ffe889a3 · Oct 18
$10,332 AUD
$7,241 USD
View
Price last confirmed 16 days ago
17 more retailers have this diamond
Prices start from $4,493 AUDSave up to $5,477 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
$4,493 AUD