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2.51ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1445891122

Certificate GIA 1445891122

Diamond specifications and retailer prices

From £4,141 GBP
As of November 5, 2026
Save £1,716 GBP (29%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £5,857 GBP at Yorxs · As of November 5, 2026
View at Yorxs

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1445891122. Listed at 2 retailers as of November 5, 2026, with prices from £4,141 to £5,857, a £1,716 spread on the same certified stone. Yorxs lists it at £5,857. 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

2.51
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1445891122
Dimensions8.66 × 8.72 × 5.34 mm
L/W Ratio1.01
Key to symbols
Feather, Needle, Indented Natural, Natural
Top View
8.66 mm8.72 mm2.51 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 1445891122
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £4,141 GBP|Low: £4,141 GBP|High: £5,924 GBP|Avg: £5,021 GBP|-1.4%
Retailer 1
Yorxs
November 5, 2026
Retailer 1£4,141 GBP
Yorxs£5,857 GBP

44 data points across 2 retailers

2 retailers£4,141 GBP to £5,857 GBP

A
Cheapest Retailer
-
£4,141 GBP
Most Expensive
B+
Yorxs
33514 · Nov 5
£5,857 GBP
€7,508 EUR
View
1 more retailer has this diamond
Prices start from £4,141 GBPSave up to £1,716 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
2.51ct Round
£4,141 GBP