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Cushion|Natural|GIA

4.03ct K SI1 Cushion Natural Diamond

ID • K/SI1 • GIA 2557570314

Certificate GIA 2557570314

Diamond specifications and retailer prices

From £17,089 GBP
As of November 6, 2026
Save £14,706 GBP (46%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £31,794 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 4.03ct natural cushion diamond

This 4.03ct 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 2557570314. Listed at 5 retailers as of November 4, 2026, with prices from £17,089 to £31,794, a £14,706 spread on the same certified stone. MOH London lists it at £31,794. 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

4.03
Carat
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557570314
Dimensions10.92 × 8.29 × 5.62 mm
L/W Ratio1.32
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
10.92 mm8.29 mm4.03 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557570314
Side View
Table 65.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.8%

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: £31,794 GBP|Low: £17,089 GBP|High: £33,287 GBP|Avg: £22,920 GBP|-4.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2£17,089 GBP
Retailer 6£19,247 GBP
Retailer 4£20,241 GBP
Retailer 5£21,375 GBP
Retailer 3£24,860 GBP
MOH London£31,794 GBP

17 data points across 6 retailers

5 retailers£17,089 GBP to £31,794 GBP

A
Cheapest Retailer
-
£17,089 GBP
A
Retailer 2
-
£20,241 GBP
View
A
Retailer 3
-
£21,375 GBP
View
A
Retailer 4
-
£24,860 GBP
View
Most Expensive
B+
MOH London
40AAB05C2 · Nov 4
£31,794 GBP
View
4 more retailers have this diamond
Prices start from £17,089 GBPSave up to £14,706 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
4.03ct Cushion
£17,089 GBP