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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 $4,831 SGD
$3,779 USD
As of October 30, 2026
Save $6,126 SGD (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,957 SGD 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 $4,831 to $10,957, a $6,126 spread on the same certified stone. NZ Jewellers lists it at $10,957. 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: $10,957 SGD|Low: $4,650 SGD|High: $10,957 SGD|Avg: $6,626 SGD
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
October 31, 2026
Retailer 18$4,831 SGD
Retailer 14$4,863 SGD
Retailer 9$4,967 SGD
Retailer 4$5,259 SGD
Retailer 16$5,395 SGD
Retailer 3$5,698 SGD
Retailer 15$5,698 SGD
Retailer 17$5,698 SGD
Retailer 11$6,214 SGD
Retailer 10$6,474 SGD
Retailer 6$6,507 SGD
Retailer 7$6,574 SGD
Retailer 12$6,736 SGD
Retailer 8$6,944 SGD
Retailer 5$6,965 SGD
Retailer 2$7,731 SGD
Retailer 13$10,071 SGD
NZ Jewellers$10,957 SGD

34 data points across 18 retailers

21 retailers$4,831 SGD to $10,957 SGD

A
Cheapest Retailer
-
$4,831 SGD
$3,779 USD
A
Retailer 2
-
$4,863 SGD
$3,804 USD
View
A
Retailer 3
-
$4,967 SGD
$3,885 USD
View
B+
Retailer 4
-
$5,259 SGD
$4,114 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,395 SGD
$4,220 USD
View
B+
Retailer 6
-
$5,698 SGD
$4,457 USD
View
B+
Retailer 7
-
$5,698 SGD
$4,457 USD
View
B+
Retailer 8
-
$5,698 SGD
$4,457 USD
View
B+
Retailer 9
-
$6,214 SGD
£3,827 GBP
View
Retailer 10
-
$6,474 SGD
A$7,792 AUD
View
Price last confirmed 21 days ago
B
Retailer 11
-
$6,507 SGD
$5,090 USD
View
B
Retailer 12
-
$6,533 SGD
$5,110 USD
View
B
Retailer 13
-
$6,533 SGD
$5,110 USD
View
B
Retailer 14
-
$6,574 SGD
$5,142 USD
View
B
Retailer 15
-
$6,736 SGD
€5,018 EUR
View
B
Retailer 16
-
$6,750 SGD
$5,280 USD
View
Retailer 17
-
$6,944 SGD
$5,432 USD
View
Price last confirmed 8 days ago
B
Retailer 18
-
$6,965 SGD
£4,290 GBP
View
B
Retailer 19
-
$7,731 SGD
ZAR 97,691 ZAR
View
B
Retailer 20
-
$10,071 SGD
£6,203 GBP
View
Most Expensive
B
NZ Jewellers
7d3e9e2f-ec09-4aa1-a4fa-42166dbd9827 · Oct 30
$10,957 SGD
$8,571 USD
View
20 more retailers have this diamond
Prices start from $4,831 SGDSave up to $6,126 SGD

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
$4,831 SGD