Oval|Natural|IGI

1.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • IGI 737519608

Shape and cutting style on the report: Oval brilliant

Certificate IGI 737519608

Diamond specifications and retailer prices

From $2,289 USD
As of November 6, 2026
Save $1,937 USD (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,365 USD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval 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 IGI 737519608. Listed at 9 retailers as of November 2, 2026, with a 85% 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

1.51
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle42.3°
OriginNatural
Grading LabIGI
CertificateIGI 737519608
Dimensions8.93 × 6.51 × 4.13 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Top View
8.93 mm6.51 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 737519608
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 42.3°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $2,289 USD|Low: $2,289 USD|High: $4,550 USD|Avg: $2,867 USD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 1$2,289 USD
Retailer 3$2,321 USD
Retailer 5$2,464 USD
Retailer 2$2,510 USD
Retailer 4$4,226 USD

39 data points across 5 retailers

9 retailers$2,289 USD to $4,226 USD

A
Cheapest Retailer
-
$2,289 USD
A
Retailer 2
-
$2,321 USD
View
A
Retailer 3
-
$2,510 USD
View
Retailer 4
-
$2,566 USD
View
Price last confirmed 45 days ago
Retailer 5
-
$2,566 USD
View
Price last confirmed 29 days ago
Retailer 6
-
$2,684 USD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$4,226 USD
View
Retailer 8
-
$5,365 USD
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
5844e52c-594b-41ff-9af7-2932b759b38e · Sep 29
$5,365 USD
View
Price last confirmed 38 days ago
8 more retailers have this diamond
Prices start from $2,289 USDSave up to $1,937 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
1.51ct Oval
$2,289 USD