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Cushion|Natural|GIA

0.40ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 6555708682

Certificate GIA 6555708682

Diamond specifications and retailer prices

From £192 GBP
₹24,493 INR
As of November 2, 2026
Save £431 GBP (69%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £623 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.4ct natural cushion diamond

This 0.4ct natural cushion sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555708682. Listed at 8 retailers as of November 2, 2026, with prices from £192 to £623, a £431 spread on the same certified stone. MOH London lists it at £623. 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

0.40
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6555708682
Dimensions4.19 × 4.17 × 2.77 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud
Top View
4.19 mm4.17 mm0.40 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 6555708682
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.4%

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 2
Current: £623 GBP|Low: £191 GBP|High: £630 GBP|Avg: £391 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 2£192 GBP
Retailer 5£290 GBP
Retailer 7£313 GBP
Retailer 3£350 GBP
Retailer 4£418 GBP
Retailer 8£432 GBP
Retailer 6£495 GBP
MOH London£623 GBP

37 data points across 8 retailers

8 retailers£192 GBP to £623 GBP

A
Cheapest Retailer
-
£192 GBP
₹24,493 INR
B+
Retailer 2
-
£311 GBP
$417 USD
View
B+
Retailer 3
-
£313 GBP
$420 USD
View
B
Retailer 4
-
£350 GBP
View
B
Retailer 5
-
£418 GBP
ZAR 9,059 ZAR
View
Retailer 6
-
£432 GBP
A$891 AUD
View
Price last confirmed 29 days ago
B
Retailer 7
-
£495 GBP
€633 EUR
View
Most Expensive
C
MOH London
7E432E69D · Nov 2
£623 GBP
View
7 more retailers have this diamond
Prices start from £192 GBPSave up to £431 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
0.40ct Cushion
£192 GBP