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Radiant|Natural|GIA

1.51ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 6552111044

Certificate GIA 6552111044

Diamond specifications and retailer prices

From $5,390 AUD
$3,786 USD
As of November 1, 2026
Save $5,377 AUD (50%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,776 AUD at NZ Jewellers · As of September 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 J 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 6552111044. Listed at 16 retailers as of November 1, 2026, with a 100% 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552111044
Dimensions8.05 × 5.53 × 3.85 mm
L/W Ratio1.46
Top View
8.05 mm5.53 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552111044
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.6%

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: $6,683 AUD|Low: $5,390 AUD|High: $10,895 AUD|Avg: $7,291 AUD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5$5,390 AUD
Retailer 6$6,124 AUD
Retailer 1$6,683 AUD
Retailer 3$6,722 AUD
Retailer 2$7,647 AUD
Retailer 4$10,766 AUD

42 data points across 6 retailers

16 retailers$5,390 AUD to $10,766 AUD

A
Cheapest Retailer
-
$5,390 AUD
$3,786 USD
B+
Retailer 2
-
$5,525 AUD
$3,881 USD
View
B+
Retailer 3
-
$5,984 AUD
$4,203 USD
View
B+
Retailer 4
-
$6,093 AUD
$4,280 USD
View
Retailer 5
-
$6,124 AUD
$4,302 USD
View
Price last confirmed 32 days ago
Retailer 6
-
$6,124 AUD
$4,302 USD
View
Price last confirmed 32 days ago
B+
Retailer 7
-
$6,683 AUD
£3,696 GBP
View
B+
Retailer 8
-
$6,722 AUD
£3,718 GBP
View
B+
Retailer 9
-
$6,890 AUD
$4,840 USD
View
B+
Retailer 10
-
$6,890 AUD
$4,840 USD
View
Retailer 11
-
$7,065 AUD
$4,963 USD
View
Price last confirmed 34 days ago
B
Retailer 12
-
$7,118 AUD
$5,000 USD
View
Retailer 13
-
$7,464 AUD
$5,243 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
$7,647 AUD
€5,116 EUR
View
B
Retailer 15
-
$10,766 AUD
£5,955 GBP
View
Most Expensive
NZ Jewellers
45705f93-caef-4693-904f-1d190c752ddf · Sep 30
$11,776 AUD
$8,272 USD
View
Price last confirmed 32 days ago
15 more retailers have this diamond
Prices start from $5,390 AUDSave up to $5,377 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
$5,390 AUD