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Oval|Natural|IGI

1.50ct K SI1 Oval Natural Diamond

EX • K/SI1 • IGI 816642329

Shape and cutting style on the report: Oval brilliant

Certificate IGI 816642329

Diamond specifications and retailer prices

From $2,431 SGD
As of November 6, 2026
Save $4,279 SGD (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,948 SGD at NZ Jewellers · As of August 30, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 816642329. Listed at 17 retailers as of November 5, 2026, with a 176% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 816642329
Dimensions9.30 × 6.41 × 3.99 mm
L/W Ratio1.45
Girdle conditionFaceted
Top View
9.30 mm6.41 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 816642329
Side View
Table 59.0%Crown 36.5°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $2,431 SGD|Low: $2,431 SGD|High: $5,692 SGD|Avg: $3,724 SGD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$2,431 SGD
Retailer 7$2,903 SGD
Retailer 6$3,454 SGD
Retailer 2$3,456 SGD
Retailer 3$3,917 SGD
Retailer 5$4,008 SGD
Retailer 4$5,608 SGD

38 data points across 7 retailers

17 retailers$2,431 SGD to $6,710 SGD

A
Cheapest Retailer
-
$2,431 SGD
A
Retailer 2
-
$2,899 SGD
View
A
Retailer 3
-
$2,903 SGD
View
Retailer 4
-
$3,209 SGD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$3,209 SGD
View
B+
Retailer 6
-
$3,358 SGD
View
B+
Retailer 7
-
$3,380 SGD
View
B+
Retailer 8
-
$3,389 SGD
View
Retailer 9
-
$3,454 SGD
View
Price last confirmed 16 days ago
A
Retailer 10
-
$3,456 SGD
View
B+
Retailer 11
-
$3,704 SGD
View
Retailer 12
-
$3,835 SGD
View
Price last confirmed 61 days ago
A
Retailer 13
-
$3,917 SGD
View
A
Retailer 14
-
$4,008 SGD
View
B+
Retailer 15
-
$5,608 SGD
View
B
Retailer 16
-
$6,710 SGD
View
Most Expensive
NZ Jewellers
9dc268e1-df2d-481b-97a0-0577477f6c0f · Aug 30
$6,948 SGD
$5,421 USD
View
Price last confirmed 68 days ago
16 more retailers have this diamond
Prices start from $2,431 SGDSave up to $4,279 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 Oval
$2,431 SGD