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1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1415840386

Certificate GIA 1415840386

Diamond specifications and retailer prices

From $7,816 AUD
$5,490 USD
As of November 1, 2026
Save $9,406 AUD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $17,221 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 1415840386. Listed at 19 retailers as of October 30, 2026, with prices from $7,816 to $17,221, a $9,406 spread on the same certified stone. NZ Jewellers lists it at $17,221. 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1415840386
Dimensions7.35 × 7.34 × 4.49 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.35 mm7.34 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1415840386
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.2%

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: $17,221 AUD|Low: $7,757 AUD|High: $17,890 AUD|Avg: $10,757 AUD|-3.7%
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 12$7,816 AUD
Retailer 16$7,908 AUD
Retailer 4$8,134 AUD
Retailer 5$8,610 AUD
Retailer 14$8,611 AUD
Retailer 17$9,184 AUD
Retailer 8$9,329 AUD
Retailer 15$9,473 AUD
Retailer 2$9,808 AUD
Retailer 6$10,236 AUD
Retailer 13$10,236 AUD
Retailer 7$10,577 AUD
Retailer 10$10,595 AUD
Retailer 9$10,764 AUD
Retailer 3$11,348 AUD
Retailer 11$14,350 AUD
NZ Jewellers$17,221 AUD

41 data points across 17 retailers

19 retailers$7,816 AUD to $17,221 AUD

B+
Cheapest Retailer
-
$7,816 AUD
$5,490 USD
B+
Retailer 2
-
$7,908 AUD
$5,555 USD
View
B+
Retailer 3
-
$8,134 AUD
$5,714 USD
View
B
Retailer 4
-
$8,449 AUD
View
Retailer 5
-
$8,532 AUD
$5,993 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
$8,610 AUD
$6,048 USD
View
Final sale: no returns
B
Retailer 7
-
$8,611 AUD
$6,049 USD
View
B
Retailer 8
-
$9,184 AUD
$6,451 USD
View
B
Retailer 9
-
$9,329 AUD
$6,553 USD
View
B
Retailer 10
-
$9,473 AUD
$6,654 USD
View
B
Retailer 11
-
$9,808 AUD
£5,425 GBP
View
B
Retailer 12
-
$10,236 AUD
$7,190 USD
View
B
Retailer 13
-
$10,236 AUD
$7,190 USD
View
B
Retailer 14
-
$10,577 AUD
$7,430 USD
View
B
Retailer 15
-
$10,595 AUD
€7,088 EUR
View
B
Retailer 16
-
$10,764 AUD
$7,561 USD
View
Retailer 17
-
$11,348 AUD
$7,971 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
$14,350 AUD
£7,937 GBP
View
Most Expensive
B
NZ Jewellers
a0390c18-3dae-4db9-8e16-bdab1875caac · Oct 30
$17,221 AUD
$12,097 USD
View
18 more retailers have this diamond
Prices start from $7,816 AUDSave up to $9,406 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
$7,816 AUD