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1.31ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 6502813091

Certificate GIA 6502813091

Diamond specifications and retailer prices

From £1,502 GBP
As of November 4, 2026
Save £591 GBP (28%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,092 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 6502813091. Listed at 2 retailers as of November 2, 2026, with prices from £1,502 to £2,092, a £591 spread on the same certified stone. Yorxs lists it at £2,092. 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
FluorescenceMedium
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6502813091
Dimensions6.95 × 6.98 × 4.39 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.95 mm6.98 mm1.31 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6502813091
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.0%

Caratlytics Score

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

Last verified: Nov 4
Current: £1,502 GBP|Low: £1,250 GBP|High: £2,102 GBP|Avg: £1,759 GBP|+20.1%
Retailer 1
Yorxs
November 2, 2026
Retailer 1£1,502 GBP
Yorxs£2,092 GBP

11 data points across 2 retailers

2 retailers£1,502 GBP to £2,092 GBP

B+
Cheapest Retailer
-
£1,502 GBP
Final sale: no returns
Most Expensive
B
Yorxs
S-2034/6 · Nov 2
£2,092 GBP
€2,682 EUR
View
1 more retailer has this diamond
Prices start from £1,502 GBPSave up to £591 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
£1,502 GBP