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Round|Natural|GIA

1.31ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 2557411953

Certificate GIA 2557411953

Diamond specifications and retailer prices

From £2,350 GBP
As of November 1, 2026
Save £1,934 GBP (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,440 GBP at NZ Jewellers · As of October 3, 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 GIA 2557411953. Listed at 11 retailers as of October 29, 2026, with a 82% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557411953
Dimensions6.96 × 7.01 × 4.35 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle, Feather
Top View
6.96 mm7.01 mm1.31 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557411953
Side View
Table 60.0%Crown 33°Girdle: Slightly ThickPavilion 41.8°Culet: NoneDepth 62.2%

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 1
Current: £2,350 GBP|Low: £2,156 GBP|High: £4,332 GBP|Avg: £2,970 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 1£2,350 GBP
Retailer 4£2,352 GBP
Retailer 3£2,625 GBP
Retailer 6£2,657 GBP
Retailer 2£2,970 GBP
Retailer 7£3,045 GBP
Retailer 5£4,284 GBP

32 data points across 7 retailers

11 retailers£2,350 GBP to £4,284 GBP

A
Cheapest Retailer
-
£2,350 GBP
A
Retailer 2
-
£2,352 GBP
$3,151 USD
View
Final sale: no returns
Retailer 3
-
£2,548 GBP
$3,414 USD
View
Price last confirmed 24 days ago
Retailer 4
-
£2,548 GBP
$3,414 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
£2,625 GBP
View
Retailer 6
-
£2,657 GBP
$3,560 USD
View
Price last confirmed 24 days ago
Retailer 7
-
£2,658 GBP
$3,561 USD
View
Price last confirmed 33 days ago
Retailer 8
-
£2,941 GBP
$3,940 USD
View
Price last confirmed 30 days ago
A
Retailer 9
-
£2,970 GBP
€3,790 EUR
View
B
Retailer 10
-
£4,284 GBP
View
Most Expensive
NZ Jewellers
c43b5840-6924-4435-9b8e-666816816f05 · Oct 3
£4,440 GBP
$5,949 USD
View
Price last confirmed 29 days ago
10 more retailers have this diamond
Prices start from £2,350 GBPSave up to £1,934 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
£2,350 GBP