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Round|Natural|GIA

1.31ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 6552354747

Certificate GIA 6552354747

Diamond specifications and retailer prices

From £1,716 GBP
As of November 4, 2026
Save £262 GBP (13%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,741 GBP at NZ Jewellers · As of September 28, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552354747. Listed at 7 retailers as of November 4, 2026, with a relatively tight 15% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552354747
Dimensions6.95 × 7.00 × 4.34 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Twinning Wisp, Cloud, Needle
Top View
6.95 mm7.00 mm1.31 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552354747
Side View
Table 57.0%Crown 35.5°GirdlePavilion 40.8°CuletDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,979 GBP|Low: £1,716 GBP|High: £2,115 GBP|Avg: £1,851 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3£1,716 GBP
Retailer 2£1,719 GBP
Retailer 5£1,739 GBP
Retailer 4£1,757 GBP
Retailer 6£1,789 GBP
Retailer 1£1,979 GBP
Retailer 7£2,115 GBP

40 data points across 7 retailers

7 retailers£1,716 GBP to £1,979 GBP

B+
Cheapest Retailer
-
£1,716 GBP
B+
Retailer 2
-
£1,719 GBP
View
B+
Retailer 3
-
£1,739 GBP
View
B+
Retailer 4
-
£1,757 GBP
View
Retailer 5
-
£1,789 GBP
View
Price last confirmed 41 days ago
B
Retailer 6
-
£1,979 GBP
View
Most Expensive
NZ Jewellers
56f036bf-3f8a-41e2-a777-3fe6736f3900 · Sep 28
£3,741 GBP
$5,035 USD
View
Price last confirmed 39 days ago
6 more retailers have this diamond
Prices start from £1,716 GBPSave up to £262 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.

B+
1.31ct Round
£1,716 GBP