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2.56ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5556151724

Certificate GIA 5556151724

Diamond specifications and retailer prices

From £18,732 GBP
As of November 1, 2026
Save £1,352 GBP (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £20,085 GBP at Yorxs · As of November 1, 2026
View at Yorxs

About this 2.56ct natural round diamond

This 2.56ct natural round sits in the two to three carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5556151724. Listed at 2 retailers as of November 1, 2026, with a relatively tight 7% 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

2.56
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5556151724
Dimensions8.68 × 8.70 × 5.43 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
8.68 mm8.70 mm2.56 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5556151724
Side View
Table 59.0%Crown 36°Girdle: MediumPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

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

Last verified: Nov 1
Current: £18,732 GBP|Low: £18,397 GBP|High: £20,227 GBP|Avg: £19,330 GBP|+1.8%
Retailer 1
Yorxs
November 1, 2026
Retailer 1£18,732 GBP
Yorxs£20,085 GBP

36 data points across 2 retailers

2 retailers£18,732 GBP to £20,085 GBP

B+
Cheapest Retailer
-
£18,732 GBP
Most Expensive
B+
Yorxs
AA667 · Nov 1
£20,085 GBP
€25,630 EUR
View
1 more retailer has this diamond
Prices start from £18,732 GBPSave up to £1,352 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+
2.56ct Round
£18,732 GBP