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Round|Natural|GIA

1.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1515100506

Certificate GIA 1515100506

Diamond specifications and retailer prices

From $7,043 AUD
As of November 1, 2026
Save $8,348 AUD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $15,391 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct 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 1515100506. Listed at 18 retailers as of November 1, 2026, with prices from $7,043 to $15,391, a $8,348 spread on the same certified stone. NZ Jewellers lists it at $15,391. 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

1.50
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1515100506
Dimensions7.27 × 7.24 × 4.51 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Feather, Crystal, Indented Natural, Cavity, Cloud, Needle, Natural
Top View
7.27 mm7.24 mm1.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1515100506
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

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: $15,391 AUD|Low: $6,413 AUD|High: $15,391 AUD|Avg: $10,194 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$7,043 AUD
Retailer 6$7,454 AUD
Retailer 8$7,695 AUD
Retailer 9$8,337 AUD
Retailer 3$8,631 AUD
Retailer 4$9,977 AUD
Retailer 2$11,842 AUD
Retailer 5$13,556 AUD
NZ Jewellers$15,391 AUD

42 data points across 9 retailers

18 retailers$7,043 AUD to $15,391 AUD

B+
Cheapest Retailer
-
$7,043 AUD
B+
Retailer 2
-
$7,270 AUD
View
B
Retailer 3
-
$7,454 AUD
View
B
Retailer 4
-
$7,695 AUD
View
Final sale: no returns
B
Retailer 5
-
$7,760 AUD
View
Retailer 6
-
$8,337 AUD
View
Price last confirmed 21 days ago
B
Retailer 7
-
$8,337 AUD
View
B
Retailer 8
-
$8,337 AUD
View
B+
Retailer 9
-
$8,631 AUD
View
B
Retailer 10
-
$9,300 AUD
View
B
Retailer 11
-
$9,300 AUD
View
B
Retailer 12
-
$9,614 AUD
View
B
Retailer 13
-
$9,620 AUD
View
B
Retailer 14
-
$9,977 AUD
View
Retailer 15
-
$10,145 AUD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$11,842 AUD
View
B
Retailer 17
-
$13,556 AUD
View
Most Expensive
B
NZ Jewellers
906b3ef9-9193-40ff-b4d3-cb703e82cc8f · Nov 5
$15,391 AUD
$10,774 USD
View
17 more retailers have this diamond
Prices start from $7,043 AUDSave up to $8,348 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+
1.50ct Round
$7,043 AUD