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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6502356237

Certificate GIA 6502356237

Diamond specifications and retailer prices

From $6,783 AUD
$4,754 USD
As of November 1, 2026
Save $7,575 AUD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $14,359 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 6502356237. Listed at 16 retailers as of November 1, 2026, with prices from $6,783 to $14,359, a $7,575 spread on the same certified stone. NZ Jewellers lists it at $14,359. 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
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6502356237
Dimensions7.32 × 7.28 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.32 mm7.28 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6502356237
Side View
Table 58.0%Crown 36°Girdle: ThickPavilion 40.8°Culet: NoneDepth 62.3%

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: $14,359 AUD|Low: $6,783 AUD|High: $14,359 AUD|Avg: $9,332 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 1, 2026
Retailer 11$6,783 AUD
Retailer 9$6,849 AUD
Retailer 10$7,240 AUD
Retailer 4$7,778 AUD
Retailer 13$7,778 AUD
Retailer 14$7,778 AUD
Retailer 8$8,319 AUD
Retailer 3$8,975 AUD
Retailer 2$9,339 AUD
Retailer 5$9,469 AUD
Retailer 6$10,236 AUD
Retailer 12$11,244 AUD
Retailer 7$12,649 AUD
NZ Jewellers$14,359 AUD

40 data points across 14 retailers

16 retailers$6,783 AUD to $14,359 AUD

B+
Cheapest Retailer
-
$6,783 AUD
$4,754 USD
B+
Retailer 2
-
$6,849 AUD
$4,800 USD
View
B+
Retailer 3
-
$7,240 AUD
$5,074 USD
View
B
Retailer 4
-
$7,778 AUD
$5,451 USD
View
B
Retailer 5
-
$7,778 AUD
$5,451 USD
View
B
Retailer 6
-
$7,778 AUD
$5,451 USD
View
B+
Retailer 7
-
$8,319 AUD
£4,591 GBP
View
B
Retailer 8
-
$8,690 AUD
$6,090 USD
View
B
Retailer 9
-
$8,690 AUD
$6,090 USD
View
B
Retailer 10
-
$8,975 AUD
$6,290 USD
View
B
Retailer 11
-
$8,975 AUD
$6,290 USD
View
B
Retailer 12
-
$9,339 AUD
€6,233 EUR
View
Retailer 13
-
$9,469 AUD
$6,636 USD
View
Price last confirmed 10 days ago
Retailer 14
-
$11,244 AUD
£6,205 GBP
View
Price last confirmed 33 days ago
B
Retailer 15
-
$12,649 AUD
£6,980 GBP
View
Most Expensive
B
NZ Jewellers
8f2ff27a-77b1-4959-9a1b-fd8fa3d5c856 · Nov 2
$14,359 AUD
$10,063 USD
View
15 more retailers have this diamond
Prices start from $6,783 AUDSave up to $7,575 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
$6,783 AUD