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1.31ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 5516940250

Certificate GIA 5516940250

Diamond specifications and retailer prices

From £1,553 GBP
As of November 4, 2026
Save £612 GBP (28%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,165 GBP at Yorxs · As of November 2, 2026
View at Yorxs

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 5516940250. Listed at 3 retailers as of November 2, 2026, with prices from £1,553 to £2,165, a £612 spread on the same certified stone. Yorxs lists it at £2,165. 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 angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5516940250
Dimensions6.92 × 6.97 × 4.40 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Top View
6.92 mm6.97 mm1.31 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5516940250
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £1,632 GBP|Low: £1,553 GBP|High: £2,174 GBP|Avg: £1,856 GBP|-1.7%
Retailer 1
Retailer 2
Yorxs
November 6, 2026
Retailer 2£1,553 GBP
Retailer 1£1,632 GBP
Yorxs£2,165 GBP

37 data points across 3 retailers

3 retailers£1,553 GBP to £2,165 GBP

B+
Cheapest Retailer
-
£1,553 GBP
Final sale: no returns
B+
Retailer 2
-
£1,632 GBP
View
Most Expensive
B
Yorxs
S-2184/52 · Nov 2
£2,165 GBP
€2,775 EUR
View
2 more retailers have this diamond
Prices start from £1,553 GBPSave up to £612 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
£1,553 GBP