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Cushion|Natural|GIA

4.01ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6551217341

Certificate GIA 6551217341

Diamond specifications and retailer prices

From £24,254 GBP
As of November 6, 2026
Save £18,313 GBP (43%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £42,567 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 4.01ct natural cushion diamond

This 4.01ct natural cushion sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551217341. Listed at 21 retailers as of November 4, 2026, with prices from £24,254 to £42,567, a £18,313 spread on the same certified stone. MOH London lists it at £42,567. 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

4.01
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551217341
Dimensions10.87 × 8.38 × 5.76 mm
L/W Ratio1.30
Key to symbols
Crystal, Feather, Needle
Top View
10.87 mm8.38 mm4.01 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551217341
Side View
Table 66.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £42,567 GBP|Low: £25,264 GBP|High: £42,910 GBP|Avg: £30,410 GBP|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 3£25,264 GBP
Retailer 4£26,460 GBP
Retailer 8£26,522 GBP
Retailer 2£27,265 GBP
Retailer 9£27,329 GBP
Retailer 5£29,979 GBP
Retailer 6£31,984 GBP
Retailer 7£34,010 GBP
MOH London£42,567 GBP

23 data points across 9 retailers

21 retailers£24,254 GBP to £42,567 GBP

A
Cheapest Retailer
-
£24,254 GBP
A
Retailer 2
-
£24,882 GBP
View
A
Retailer 3
-
£25,264 GBP
View
A
Retailer 4
-
£25,597 GBP
View
A
Retailer 5
-
£26,460 GBP
View
A
Retailer 6
-
£26,522 GBP
View
B+
Retailer 7
-
£27,122 GBP
View
A
Retailer 8
-
£27,265 GBP
View
Retailer 9
-
£27,329 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£27,500 GBP
View
B+
Retailer 11
-
£28,089 GBP
View
B+
Retailer 12
-
£28,685 GBP
View
B+
Retailer 13
-
£29,224 GBP
View
B+
Retailer 14
-
£29,556 GBP
View
B+
Retailer 15
-
£29,979 GBP
View
B+
Retailer 16
-
£30,694 GBP
View
Retailer 17
-
£30,738 GBP
View
Price last confirmed 15 days ago
B+
Retailer 18
-
£31,984 GBP
View
B+
Retailer 19
-
£32,259 GBP
View
B
Retailer 20
-
£34,010 GBP
View
Most Expensive
B
MOH London
86EA74769 · Nov 4
£42,567 GBP
View
20 more retailers have this diamond
Prices start from £24,254 GBPSave up to £18,313 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
4.01ct Cushion
£24,254 GBP