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Cushion|Natural|GIA

4.02ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 7

Certificate GIA 7

Diamond specifications and retailer prices

From £25,893 GBP
As of November 6, 2026
Save £1,524 GBP (6%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £27,417 GBP at DreamStone · As of November 4, 2026
View at DreamStone

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of November 4, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7
Dimensions9.52 × 8.68 mm
L/W Ratio1.10
Top View
9.52 mm8.68 mm4.02 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 7
Side View
Table 69.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.2%

Caratlytics Score

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

Last verified: Nov 6
Current: £27,417 GBP|Low: £25,638 GBP|High: £27,417 GBP|Avg: £26,756 GBP
DreamStone
Retailer 2
September 23, 2026
Retailer 2£25,893 GBP
DreamStone£27,417 GBP

3 data points across 2 retailers

2 retailers£25,893 GBP to £27,417 GBP

B+
Cheapest Retailer
-
£25,893 GBP
Most Expensive
B+
DreamStone
636c1d5776315c1dde599987 · Nov 4
£27,417 GBP
$36,697 USD
View
1 more retailer has this diamond
Prices start from £25,893 GBPSave up to £1,524 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
£25,893 GBP