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Round|Natural|GIA

1.50ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1518584498

Certificate GIA 1518584498

Diamond specifications and retailer prices

From $6,705 NZD
$3,779 USD
As of November 1, 2026
Save $8,502 NZD (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $15,208 NZD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1518584498. Listed at 21 retailers as of October 30, 2026, with prices from $6,705 to $15,208, a $8,502 spread on the same certified stone. NZ Jewellers lists it at $15,208. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1518584498
Dimensions7.32 × 7.35 × 4.55 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Girdle conditionFaceted
Key to symbols
Cavity, Crystal, Twinning Wisp, Feather, Etch Channel
Top View
7.32 mm7.35 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1518584498
Side View
Table 59.0%Crown 34°Girdle: STK-MEDPavilion 41.8°Culet: NoneDepth 62.0%

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: Nov 1
Current: $15,208 NZD|Low: $6,453 NZD|High: $15,208 NZD|Avg: $9,200 NZD
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
Retailer 18
Retailer 19
November 1, 2026
Retailer 3$6,705 NZD
Retailer 16$6,749 NZD
Retailer 10$6,893 NZD
Retailer 5$7,299 NZD
Retailer 18$7,488 NZD
Retailer 4$7,908 NZD
Retailer 17$7,908 NZD
Retailer 19$7,908 NZD
Retailer 14$8,624 NZD
Retailer 2$8,889 NZD
Retailer 11$8,986 NZD
Retailer 7$9,032 NZD
Retailer 8$9,123 NZD
Retailer 13$9,283 NZD
Retailer 9$9,638 NZD
Retailer 6$9,667 NZD
Retailer 15$10,729 NZD
Retailer 12$13,903 NZD
NZ Jewellers$15,208 NZD

34 data points across 19 retailers

21 retailers$6,705 NZD to $15,208 NZD

A
Cheapest Retailer
-
$6,705 NZD
$3,779 USD
A
Retailer 2
-
$6,749 NZD
$3,804 USD
View
A
Retailer 3
-
$6,893 NZD
$3,885 USD
View
B+
Retailer 4
-
$7,299 NZD
$4,114 USD
View
Final sale: no returns
B+
Retailer 5
-
$7,488 NZD
$4,220 USD
View
B+
Retailer 6
-
$7,908 NZD
$4,457 USD
View
B+
Retailer 7
-
$7,908 NZD
$4,457 USD
View
B+
Retailer 8
-
$7,908 NZD
$4,457 USD
View
B+
Retailer 9
-
$8,624 NZD
£3,827 GBP
View
B+
Retailer 10
-
$8,889 NZD
$5,010 USD
View
Retailer 11
-
$8,986 NZD
A$7,792 AUD
View
Price last confirmed 23 days ago
B
Retailer 12
-
$9,032 NZD
$5,090 USD
View
B
Retailer 13
-
$9,067 NZD
$5,110 USD
View
B
Retailer 14
-
$9,123 NZD
$5,142 USD
View
B+
Retailer 15
-
$9,283 NZD
€4,983 EUR
View
B
Retailer 16
-
$9,368 NZD
$5,280 USD
View
Retailer 17
-
$9,638 NZD
$5,432 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$9,667 NZD
£4,290 GBP
View
B
Retailer 19
-
$10,729 NZD
ZAR 97,691 ZAR
View
B
Retailer 20
-
$13,903 NZD
£6,170 GBP
View
Most Expensive
B
NZ Jewellers
7d3e9e2f-ec09-4aa1-a4fa-42166dbd9827 · Oct 30
$15,208 NZD
$8,571 USD
View
20 more retailers have this diamond
Prices start from $6,705 NZDSave up to $8,502 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.

A
1.50ct Round
$6,705 NZD