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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1246015618

Certificate GIA 1246015618

Diamond specifications and retailer prices

From $5,279 AUD
$3,700 USD
As of October 30, 2026
Save $8,133 AUD (61%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $13,411 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 1246015618. Listed at 17 retailers as of October 30, 2026, with prices from $5,279 to $13,411, a $8,133 spread on the same certified stone. NZ Jewellers lists it at $13,411. 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
FluorescenceStrong
Crown angle36.5°
OriginNatural
Grading LabGIA
CertificateGIA 1246015618
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.27 mm7.31 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1246015618
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilionCulet: NoneDepth 62.5%

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: Oct 30
Current: $13,411 AUD|Low: $5,279 AUD|High: $13,411 AUD|Avg: $8,050 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 4$5,279 AUD
Retailer 5$6,335 AUD
Retailer 12$6,428 AUD
Retailer 6$6,548 AUD
Retailer 14$6,810 AUD
Retailer 15$6,946 AUD
Retailer 8$7,264 AUD
Retailer 13$7,264 AUD
Retailer 16$7,264 AUD
Retailer 3$7,654 AUD
Retailer 2$7,772 AUD
Retailer 9$8,383 AUD
Retailer 7$8,847 AUD
Retailer 10$9,036 AUD
Retailer 17$9,054 AUD
Retailer 11$12,841 AUD
NZ Jewellers$13,411 AUD

20 data points across 17 retailers

17 retailers$5,279 AUD to $13,411 AUD

A
Cheapest Retailer
-
$5,279 AUD
$3,700 USD
B+
Retailer 2
-
$6,335 AUD
$4,440 USD
View
B+
Retailer 3
-
$6,428 AUD
$4,505 USD
View
B+
Retailer 4
-
$6,548 AUD
$4,589 USD
View
B+
Retailer 5
-
$6,810 AUD
CA$6,629 CAD
View
B+
Retailer 6
-
$6,946 AUD
$4,868 USD
View
B
Retailer 7
-
$7,264 AUD
$5,091 USD
View
B
Retailer 8
-
$7,264 AUD
$5,091 USD
View
B
Retailer 9
-
$7,264 AUD
$5,091 USD
View
B
Retailer 10
-
$7,654 AUD
$5,364 USD
View
B
Retailer 11
-
$7,772 AUD
£4,289 GBP
View
B
Retailer 12
-
$8,383 AUD
$5,875 USD
View
Retailer 13
-
$8,847 AUD
$6,200 USD
View
Price last confirmed 19 days ago
B
Retailer 14
-
$9,036 AUD
€6,031 EUR
View
B
Retailer 15
-
$9,054 AUD
$6,345 USD
View
B
Retailer 16
-
$12,841 AUD
£7,086 GBP
View
Most Expensive
C
NZ Jewellers
539454d3-ef7b-4ddb-ab23-0a64fd815bbf · Oct 30
$13,411 AUD
$9,399 USD
View
16 more retailers have this diamond
Prices start from $5,279 AUDSave up to $8,133 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
$5,279 AUD