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1.31ct G SI2 Round Natural Diamond

EX • G/SI2 • IGI 802616808

Shape and cutting style on the report: Round brilliant

Certificate IGI 802616808

Diamond specifications and retailer prices

From £2,204 GBP
$2,953 USD
As of October 30, 2026
Save £2,652 GBP (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,856 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 802616808. Listed at 13 retailers as of October 30, 2026, with prices from £2,204 to £4,856, a £2,652 spread on the same certified stone. NZ Jewellers lists it at £4,856. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 802616808
Dimensions6.92 × 6.98 × 4.35 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.92 mm6.98 mm1.31 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 802616808
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.6%

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: Oct 30
Current: £4,856 GBP|Low: £1,936 GBP|High: £4,856 GBP|Avg: £2,794 GBP|+9.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 6£1,959 GBP
Retailer 5£2,204 GBP
Retailer 3£2,263 GBP
Retailer 4£2,352 GBP
Retailer 14£2,525 GBP
Retailer 11£2,549 GBP
Retailer 9£2,557 GBP
Retailer 7£2,596 GBP
Retailer 12£2,622 GBP
Retailer 10£2,662 GBP
Retailer 13£2,914 GBP
Retailer 2£3,262 GBP
Retailer 8£4,706 GBP
NZ Jewellers£4,856 GBP

39 data points across 14 retailers

13 retailers£2,204 GBP to £4,856 GBP

A
Cheapest Retailer
-
£2,204 GBP
$2,953 USD
A
Retailer 2
-
£2,263 GBP
$3,032 USD
View
A
Retailer 3
-
£2,352 GBP
$3,152 USD
View
Final sale: no returns
A
Retailer 4
-
£2,525 GBP
$3,383 USD
View
A
Retailer 5
-
£2,549 GBP
$3,416 USD
View
A
Retailer 6
-
£2,557 GBP
$3,427 USD
View
A
Retailer 7
-
£2,596 GBP
View
A
Retailer 8
-
£2,622 GBP
$3,513 USD
View
A
Retailer 9
-
£2,662 GBP
$3,567 USD
View
A
Retailer 10
-
£2,914 GBP
$3,904 USD
View
B+
Retailer 11
-
£3,262 GBP
€4,163 EUR
View
B
Retailer 12
-
£4,706 GBP
View
Most Expensive
B
NZ Jewellers
51072c9b-ddcc-4ecb-a9ce-42999253959d · Oct 30
£4,856 GBP
$6,506 USD
View
12 more retailers have this diamond
Prices start from £2,204 GBPSave up to £2,652 GBP

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
£2,204 GBP