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Cushion|Natural|GIA

0.40ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 6551384216

Certificate GIA 6551384216

Diamond specifications and retailer prices

From €179 EUR
As of November 6, 2026
Save €409 EUR (70%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €588 EUR at MOH London · As of November 7, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551384216. Listed at 6 retailers as of November 6, 2026, with prices from €179 to €588, a €409 spread on the same certified stone. MOH London lists it at €588. 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

0.40
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551384216
Dimensions5.16 × 3.76 × 2.56 mm
L/W Ratio1.37
Girdle conditionThick to Extremely Thick
Key to symbols
Cloud
Top View
5.16 mm3.76 mm0.40 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6551384216
Side View
Table 65.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 68.0%

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: €588 EUR|Low: €179 EUR|High: €694 EUR|Avg: €373 EUR|-15.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 2€179 EUR
Retailer 5€218 EUR
Retailer 6€273 EUR
Retailer 4€438 EUR
Retailer 3€515 EUR
MOH London€588 EUR

35 data points across 6 retailers

6 retailers€179 EUR to €588 EUR

A
Cheapest Retailer
-
€179 EUR
A
Retailer 2
-
€218 EUR
View
Retailer 3
-
€273 EUR
View
Price last confirmed 13 days ago
B+
Retailer 4
-
€438 EUR
View
B+
Retailer 5
-
€515 EUR
View
Most Expensive
B
MOH London
9CA723881 · Nov 7
€588 EUR
£517 GBP
View
5 more retailers have this diamond
Prices start from €179 EURSave up to €409 EUR

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
€179 EUR