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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 $5,704 AUD
$4,007 USD
As of November 1, 2026
Save $4,713 AUD (45%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $10,418 AUD at MOH London · As of November 1, 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 November 1, 2026, with prices from $5,704 to $10,418, a $4,713 spread on the same certified stone. MOH London lists it at $10,418. 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
Colour
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

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 1
Current: $10,418 AUD|Low: $5,618 AUD|High: $10,542 AUD|Avg: $7,146 AUD|+2.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$5,703 AUD
Retailer 6$5,704 AUD
Retailer 3$5,823 AUD
Retailer 5$5,902 AUD
Retailer 4$6,540 AUD
Retailer 2$7,369 AUD
Retailer 8$7,596 AUD
Retailer 9$9,208 AUD
MOH London$10,418 AUD

28 data points across 9 retailers

6 retailers$5,704 AUD to $10,418 AUD

A
Cheapest Retailer
-
$5,704 AUD
$4,007 USD
A
Retailer 2
-
$5,823 AUD
$4,090 USD
View
B+
Retailer 3
-
$5,902 AUD
$4,146 USD
View
B+
Retailer 4
-
$6,540 AUD
$4,594 USD
View
B+
Retailer 5
-
$7,369 AUD
€4,930 EUR
View
Most Expensive
B
MOH London
78C51E100 · Nov 1
$10,418 AUD
£5,762 GBP
View
5 more retailers have this diamond
Prices start from $5,704 AUDSave up to $4,713 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 Round
$5,704 AUD