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 $1,897 USD
As of November 6, 2026
Save $3,339 USD (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,421 USD 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
Color
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

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,897 USD|Low: $1,897 USD|High: $4,441 USD|Avg: $2,906 USD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$1,897 USD
Retailer 7$2,265 USD
Retailer 6$2,695 USD
Retailer 2$2,697 USD
Retailer 3$3,056 USD
Retailer 5$3,127 USD
Retailer 4$4,376 USD

38 data points across 7 retailers

17 retailers$1,897 USD to $5,236 USD

A
Cheapest Retailer
-
$1,897 USD
A
Retailer 2
-
$2,262 USD
View
A
Retailer 3
-
$2,265 USD
View
Retailer 4
-
$2,504 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$2,504 USD
View
B+
Retailer 6
-
$2,620 USD
View
B+
Retailer 7
-
$2,637 USD
View
B+
Retailer 8
-
$2,644 USD
View
Retailer 9
-
$2,695 USD
View
Price last confirmed 16 days ago
A
Retailer 10
-
$2,697 USD
View
B+
Retailer 11
-
$2,890 USD
View
Retailer 12
-
$2,992 USD
View
Price last confirmed 61 days ago
A
Retailer 13
-
$3,056 USD
View
A
Retailer 14
-
$3,127 USD
View
B+
Retailer 15
-
$4,376 USD
View
B
Retailer 16
-
$5,236 USD
View
Most Expensive
NZ Jewellers
9dc268e1-df2d-481b-97a0-0577477f6c0f · Aug 30
$5,421 USD
View
Price last confirmed 68 days ago
16 more retailers have this diamond
Prices start from $1,897 USDSave up to $3,339 USD

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
$1,897 USD