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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6432628844

Certificate GIA 6432628844

Diamond specifications and retailer prices

From $5,716 AUD
$4,015 USD
As of November 1, 2026
Save $6,383 AUD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $12,099 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 6432628844. Listed at 16 retailers as of October 30, 2026, with prices from $5,716 to $12,099, a $6,383 spread on the same certified stone. NZ Jewellers lists it at $12,099. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6432628844
Dimensions7.34 × 7.30 × 4.58 mm
L/W Ratio1.01
Top View
7.34 mm7.30 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6432628844
Side View
Table 56.0%CrownGirdle: MED-SLIPavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $12,099 AUD|Low: $5,716 AUD|High: $12,767 AUD|Avg: $7,987 AUD|-5.2%
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 4$5,716 AUD
Retailer 3$5,838 AUD
Retailer 5$6,049 AUD
Retailer 6$6,100 AUD
Retailer 8$6,463 AUD
Retailer 17$6,508 AUD
Retailer 14$6,553 AUD
Retailer 15$6,553 AUD
Retailer 16$6,553 AUD
Retailer 10$7,088 AUD
Retailer 13$7,562 AUD
Retailer 12$8,151 AUD
Retailer 7$8,423 AUD
Retailer 9$9,289 AUD
Retailer 2$9,360 AUD
Retailer 11$11,522 AUD
NZ Jewellers$12,099 AUD

25 data points across 17 retailers

16 retailers$5,716 AUD to $12,099 AUD

B+
Cheapest Retailer
-
$5,716 AUD
$4,015 USD
B+
Retailer 2
-
$5,838 AUD
$4,101 USD
View
B+
Retailer 3
-
$6,049 AUD
$4,249 USD
View
Final sale: no returns
B+
Retailer 4
-
$6,100 AUD
$4,285 USD
View
B+
Retailer 5
-
$6,463 AUD
$4,540 USD
View
B+
Retailer 6
-
$6,508 AUD
$4,571 USD
View
B+
Retailer 7
-
$6,553 AUD
$4,603 USD
View
B+
Retailer 8
-
$6,553 AUD
$4,603 USD
View
B+
Retailer 9
-
$6,553 AUD
$4,603 USD
View
B+
Retailer 10
-
$7,088 AUD
£3,920 GBP
View
B
Retailer 11
-
$7,562 AUD
$5,312 USD
View
B+
Retailer 12
-
$8,151 AUD
€5,453 EUR
View
Retailer 13
-
$8,423 AUD
$5,917 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$9,360 AUD
£5,177 GBP
View
B
Retailer 15
-
$11,522 AUD
£6,373 GBP
View
Most Expensive
B
NZ Jewellers
03625e64-819b-4461-92f3-69210ba19a8f · Oct 30
$12,099 AUD
$8,499 USD
View
15 more retailers have this diamond
Prices start from $5,716 AUDSave up to $6,383 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.

B+
1.51ct Round
$5,716 AUD