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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 $8,893 NZD
As of November 1, 2026
Save $10,542 NZD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $19,435 NZD 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 $8,893 to $19,435, a $10,542 spread on the same certified stone. NZ Jewellers lists it at $19,435. 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: $19,435 NZD|Low: $8,098 NZD|High: $19,435 NZD|Avg: $12,873 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$8,893 NZD
Retailer 6$9,413 NZD
Retailer 8$9,718 NZD
Retailer 9$10,528 NZD
Retailer 3$10,899 NZD
Retailer 4$12,598 NZD
Retailer 2$14,954 NZD
Retailer 5$17,119 NZD
NZ Jewellers$19,435 NZD

42 data points across 9 retailers

18 retailers$8,893 NZD to $19,435 NZD

B+
Cheapest Retailer
-
$8,893 NZD
B+
Retailer 2
-
$9,180 NZD
View
B
Retailer 3
-
$9,413 NZD
View
B
Retailer 4
-
$9,718 NZD
View
Final sale: no returns
B
Retailer 5
-
$9,799 NZD
View
Retailer 6
-
$10,528 NZD
View
Price last confirmed 21 days ago
B
Retailer 7
-
$10,528 NZD
View
B
Retailer 8
-
$10,528 NZD
View
B+
Retailer 9
-
$10,899 NZD
View
B
Retailer 10
-
$11,743 NZD
View
B
Retailer 11
-
$11,743 NZD
View
B
Retailer 12
-
$12,140 NZD
View
B
Retailer 13
-
$12,147 NZD
View
B
Retailer 14
-
$12,598 NZD
View
Retailer 15
-
$12,811 NZD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$14,954 NZD
View
B
Retailer 17
-
$17,119 NZD
View
Most Expensive
B
NZ Jewellers
906b3ef9-9193-40ff-b4d3-cb703e82cc8f · Nov 5
$19,435 NZD
$10,774 USD
View
17 more retailers have this diamond
Prices start from $8,893 NZDSave up to $10,542 NZD

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
$8,893 NZD