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Cushion|Natural|GIA

3.51ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2557178397

Certificate GIA 2557178397

Diamond specifications and retailer prices

From £52,637 GBP
As of November 5, 2026
Save £8,224 GBP (14%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £60,860 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 3.51ct natural cushion diamond

This 3.51ct natural cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557178397. Listed at 5 retailers as of November 5, 2026, with prices from £52,637 to £60,860, a £8,224 spread on the same certified stone. Yorxs lists it at £60,860. 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

3.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557178397
Dimensions11.41 × 8.01 × 4.83 mm
L/W Ratio1.42
Top View
11.41 mm8.01 mm3.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557178397
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 60.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £54,614 GBP|Low: £38,902 GBP|High: £61,009 GBP|Avg: £51,132 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Yorxs
November 6, 2026
Retailer 2£38,902 GBP
Retailer 10£41,503 GBP
Retailer 3£43,307 GBP
Retailer 11£48,868 GBP
Retailer 8£48,898 GBP
Retailer 4£52,637 GBP
Retailer 1£54,614 GBP
Retailer 5£54,614 GBP
Retailer 7£56,294 GBP
Retailer 6£56,437 GBP
Retailer 9£56,963 GBP
Yorxs£60,860 GBP

20 data points across 12 retailers

5 retailers£52,637 GBP to £60,860 GBP

B
Cheapest Retailer
-
£52,637 GBP
B
Retailer 2
-
£54,614 GBP
View
B
Retailer 3
-
£54,614 GBP
View
B
Retailer 4
-
£56,437 GBP
View
Most Expensive
B
Yorxs
622796265 · Nov 6
£60,860 GBP
€77,582 EUR
View
4 more retailers have this diamond
Prices start from £52,637 GBPSave up to £8,224 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
3.51ct Cushion
£52,637 GBP