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Cushion|Natural|GIA

4.02ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 5186144501

Certificate GIA 5186144501

Diamond specifications and retailer prices

From £25,140 GBP
As of November 1, 2026
Save £20,186 GBP (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £45,327 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 4.02ct natural cushion diamond

This 4.02ct natural cushion sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5186144501. Listed at 13 retailers as of November 1, 2026, with prices from £25,140 to £45,327, a £20,186 spread on the same certified stone. MOH London lists it at £45,327. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.02
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5186144501
Dimensions9.13 × 8.78 × 5.92 mm
L/W Ratio1.04
Top View
9.13 mm8.78 mm4.02 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5186144501
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £45,327 GBP|Low: £25,140 GBP|High: £45,995 GBP|Avg: £32,059 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£25,140 GBP
Retailer 2£26,097 GBP
Retailer 5£29,039 GBP
Retailer 7£29,101 GBP
Retailer 3£34,067 GBP
Retailer 4£36,215 GBP
MOH London£45,327 GBP

35 data points across 7 retailers

13 retailers£25,140 GBP to £45,327 GBP

B+
Cheapest Retailer
-
£25,140 GBP
B+
Retailer 2
-
£26,097 GBP
View
B+
Retailer 3
-
£26,494 GBP
View
B+
Retailer 4
-
£27,263 GBP
View
B+
Retailer 5
-
£28,230 GBP
View
B+
Retailer 6
-
£29,039 GBP
View
Retailer 7
-
£29,101 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£29,230 GBP
View
B+
Retailer 9
-
£29,343 GBP
View
B
Retailer 10
-
£31,707 GBP
View
B
Retailer 11
-
£34,067 GBP
View
B
Retailer 12
-
£36,215 GBP
View
Most Expensive
B
MOH London
01873AC53 · Nov 4
£45,327 GBP
View
12 more retailers have this diamond
Prices start from £25,140 GBPSave up to £20,186 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+
4.02ct Cushion
£25,140 GBP