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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 $2,599 AUD
As of November 6, 2026
Save $3,737 AUD (59%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,336 AUD 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 $2,599 to $6,336, a $3,737 spread on the same certified stone. MOH London lists it at $6,336. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,336 AUD|Low: $2,599 AUD|High: $6,430 AUD|Avg: $4,024 AUD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$2,599 AUD
Retailer 7$3,275 AUD
Retailer 8$3,384 AUD
Retailer 3$3,518 AUD
Retailer 4$3,905 AUD
Retailer 6$4,082 AUD
Retailer 5$4,426 AUD
MOH London$6,336 AUD

27 data points across 8 retailers

12 retailers$2,599 AUD to $6,336 AUD

A
Cheapest Retailer
-
$2,599 AUD
B+
Retailer 2
-
$3,275 AUD
View
B+
Retailer 3
-
$3,275 AUD
View
B+
Retailer 4
-
$3,384 AUD
View
B+
Retailer 5
-
$3,518 AUD
View
Retailer 6
-
$3,627 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,831 AUD
View
B+
Retailer 8
-
$3,905 AUD
View
B+
Retailer 9
-
$4,082 AUD
View
B+
Retailer 10
-
$4,184 AUD
View
B+
Retailer 11
-
$4,426 AUD
View
Most Expensive
B
MOH London
E97CBE54D · Nov 4
$6,336 AUD
£3,428 GBP
View
11 more retailers have this diamond
Prices start from $2,599 AUDSave up to $3,737 AUD

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
$2,599 AUD