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Oval|Natural|IGI

1.31ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 628465278

Shape and cutting style on the report: Oval brilliant

Certificate IGI 628465278

Diamond specifications and retailer prices

From $1,786 USD
As of November 6, 2026
Save $2,568 USD (59%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,354 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.31ct natural oval diamond

This 1.31ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 628465278. Listed at 12 retailers as of November 4, 2026, with prices from $1,786 to $4,354, a $2,568 spread on the same certified stone. MOH London lists it at $4,354. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.31
Carat
K
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 628465278
Dimensions8.46 × 6.03 × 3.90 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Top View
8.46 mm6.03 mm1.31 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 628465278
Side View
Table 62.0%Crown 40.4°Girdle: MED-THKPavilion 41.7°Culet: NoneDepth 64.7%

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: $4,354 USD|Low: $1,786 USD|High: $4,418 USD|Avg: $2,765 USD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$1,786 USD
Retailer 7$2,250 USD
Retailer 8$2,325 USD
Retailer 3$2,417 USD
Retailer 4$2,683 USD
Retailer 6$2,805 USD
Retailer 5$3,041 USD
MOH London$4,354 USD

27 data points across 8 retailers

12 retailers$1,786 USD to $4,354 USD

A
Cheapest Retailer
-
$1,786 USD
B+
Retailer 2
-
$2,250 USD
View
B+
Retailer 3
-
$2,250 USD
View
B+
Retailer 4
-
$2,325 USD
View
B+
Retailer 5
-
$2,417 USD
View
Retailer 6
-
$2,492 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$2,632 USD
View
B+
Retailer 8
-
$2,683 USD
View
B+
Retailer 9
-
$2,805 USD
View
B+
Retailer 10
-
$2,875 USD
View
B+
Retailer 11
-
$3,041 USD
View
Most Expensive
B
MOH London
E97CBE54D · Nov 4
$4,354 USD
£3,428 GBP
View
11 more retailers have this diamond
Prices start from $1,786 USDSave up to $2,568 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
1.31ct Oval
$1,786 USD