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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 $5,380 AUD
$3,779 USD
As of October 30, 2026
Save $6,822 AUD (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,202 AUD 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 $5,380 to $12,202, a $6,822 spread on the same certified stone. NZ Jewellers lists it at $12,202. 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: Oct 30
Current: $12,202 AUD|Low: $5,178 AUD|High: $12,202 AUD|Avg: $7,373 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 18$5,380 AUD
Retailer 14$5,415 AUD
Retailer 9$5,531 AUD
Retailer 4$5,857 AUD
Retailer 16$6,008 AUD
Retailer 3$6,345 AUD
Retailer 15$6,345 AUD
Retailer 17$6,345 AUD
Retailer 11$6,920 AUD
Retailer 10$7,210 AUD
Retailer 6$7,246 AUD
Retailer 7$7,320 AUD
Retailer 2$7,448 AUD
Retailer 8$7,733 AUD
Retailer 5$7,756 AUD
Retailer 12$8,609 AUD
Retailer 13$11,215 AUD
NZ Jewellers$12,202 AUD

35 data points across 18 retailers

21 retailers$5,380 AUD to $12,202 AUD

A
Cheapest Retailer
-
$5,380 AUD
$3,779 USD
A
Retailer 2
-
$5,415 AUD
$3,804 USD
View
A
Retailer 3
-
$5,531 AUD
$3,885 USD
View
B+
Retailer 4
-
$5,857 AUD
$4,114 USD
View
Final sale: no returns
B+
Retailer 5
-
$6,008 AUD
$4,220 USD
View
B+
Retailer 6
-
$6,345 AUD
$4,457 USD
View
B+
Retailer 7
-
$6,345 AUD
$4,457 USD
View
B+
Retailer 8
-
$6,345 AUD
$4,457 USD
View
B+
Retailer 9
-
$6,920 AUD
£3,827 GBP
View
Retailer 10
-
$7,210 AUD
View
Price last confirmed 22 days ago
B
Retailer 11
-
$7,246 AUD
$5,090 USD
View
B
Retailer 12
-
$7,275 AUD
$5,110 USD
View
B
Retailer 13
-
$7,275 AUD
$5,110 USD
View
B
Retailer 14
-
$7,320 AUD
$5,142 USD
View
B+
Retailer 15
-
$7,448 AUD
€4,983 EUR
View
B
Retailer 16
-
$7,517 AUD
$5,280 USD
View
Retailer 17
-
$7,733 AUD
$5,432 USD
View
Price last confirmed 8 days ago
B
Retailer 18
-
$7,756 AUD
£4,290 GBP
View
B
Retailer 19
-
$8,609 AUD
ZAR 97,691 ZAR
View
B
Retailer 20
-
$11,215 AUD
£6,203 GBP
View
Most Expensive
B
NZ Jewellers
7d3e9e2f-ec09-4aa1-a4fa-42166dbd9827 · Oct 30
$12,202 AUD
$8,571 USD
View
20 more retailers have this diamond
Prices start from $5,380 AUDSave up to $6,822 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.

A
1.50ct Round
$5,380 AUD