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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6442857890

Certificate GIA 6442857890

Diamond specifications and retailer prices

From $4,310 AUD
HK$23,600 HKD
As of November 1, 2026
Save $5,806 AUD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,117 AUD at NZ Jewellers · As of November 2, 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 6442857890. Listed at 17 retailers as of November 1, 2026, with prices from $4,310 to $10,117, a $5,806 spread on the same certified stone. NZ Jewellers lists it at $10,117. 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
Crown angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6442857890
Dimensions7.47 × 7.44 × 4.53 mm
L/W Ratio1.00
Star length45%
Lower girdle80%
Top View
7.47 mm7.44 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6442857890
Side View
Table 59.0%Crown 32°Girdle: MED-NULPavilion 41.8°Culet: NoneDepth 60.8%

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: $10,117 AUD|Low: $4,274 AUD|High: $10,208 AUD|Avg: $6,321 AUD|-0.9%
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
November 2, 2026
Retailer 10$4,310 AUD
Retailer 5$4,958 AUD
Retailer 7$5,123 AUD
Retailer 14$5,359 AUD
Retailer 4$5,443 AUD
Retailer 6$5,807 AUD
Retailer 11$5,807 AUD
Retailer 13$5,807 AUD
Retailer 2$5,903 AUD
Retailer 12$6,017 AUD
Retailer 8$6,543 AUD
Retailer 15$6,633 AUD
Retailer 3$6,701 AUD
Retailer 9$9,711 AUD
NZ Jewellers$10,117 AUD

33 data points across 15 retailers

17 retailers$4,310 AUD to $10,117 AUD

A
Cheapest Retailer
-
$4,310 AUD
HK$23,600 HKD
A
Retailer 2
-
$4,958 AUD
$3,475 USD
View
A
Retailer 3
-
$5,123 AUD
$3,590 USD
View
B+
Retailer 4
-
$5,359 AUD
$3,756 USD
View
Final sale: no returns
Retailer 5
-
$5,443 AUD
SGD 5,155 SGD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$5,526 AUD
View
Retailer 7
-
$5,570 AUD
$3,904 USD
View
Price last confirmed 105 days ago
B+
Retailer 8
-
$5,807 AUD
$4,070 USD
View
B+
Retailer 9
-
$5,807 AUD
$4,070 USD
View
B+
Retailer 10
-
$5,807 AUD
$4,070 USD
View
B+
Retailer 11
-
$5,903 AUD
£3,258 GBP
View
B+
Retailer 12
-
$6,017 AUD
$4,217 USD
View
B+
Retailer 13
-
$6,543 AUD
€4,367 EUR
View
B+
Retailer 14
-
$6,633 AUD
£3,660 GBP
View
B+
Retailer 15
-
$6,701 AUD
$4,696 USD
View
B
Retailer 16
-
$9,711 AUD
£5,359 GBP
View
Most Expensive
B
NZ Jewellers
a69f990f-567b-4bf7-a2aa-d4fef9127bd3 · Nov 2
$10,117 AUD
$7,090 USD
View
16 more retailers have this diamond
Prices start from $4,310 AUDSave up to $5,806 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 Round
$4,310 AUD