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1.31ct G SI2 Round Natural Diamond

EX • G/SI2 • IGI 127491116

Shape and cutting style on the report: Round brilliant

Certificate IGI 127491116

Diamond specifications and retailer prices

From €3,587 EUR
$4,007 USD
As of October 30, 2026
Save €2,999 EUR (46%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €6,585 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.31ct natural round diamond

This 1.31ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 127491116. Listed at 6 retailers as of October 29, 2026, with prices from €3,587 to €6,585, a €2,999 spread on the same certified stone. MOH London lists it at €6,585. 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

1.31
Carat
G
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 127491116
Dimensions7.04 × 6.99 × 4.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.04 mm6.99 mm1.31 ctG / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 127491116
Side View
Table 54.5%Crown 35°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 62.2%

Caratlytics Score

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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: Oct 30
Current: €6,585 EUR|Low: €3,532 EUR|High: €6,628 EUR|Avg: €4,493 EUR|+2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7€3,586 EUR
Retailer 6€3,587 EUR
Retailer 3€3,661 EUR
Retailer 5€3,711 EUR
Retailer 4€4,112 EUR
Retailer 2€4,655 EUR
Retailer 8€4,776 EUR
Retailer 9€5,789 EUR
MOH London€6,585 EUR

27 data points across 9 retailers

6 retailers€3,587 EUR to €6,585 EUR

A
Cheapest Retailer
-
€3,587 EUR
$4,007 USD
Retailer 2
-
€3,661 EUR
$4,090 USD
View
Price last confirmed 10 days ago
B+
Retailer 3
-
€3,711 EUR
$4,146 USD
View
B+
Retailer 4
-
€4,112 EUR
$4,594 USD
View
B+
Retailer 5
-
€4,655 EUR
View
Most Expensive
B
MOH London
78C51E100 · Oct 29
€6,585 EUR
£5,793 GBP
View
5 more retailers have this diamond
Prices start from €3,587 EURSave up to €2,999 EUR

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 Round
€3,587 EUR