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Cushion|Natural|GIA

0.40ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 2554184590

Certificate GIA 2554184590

Diamond specifications and retailer prices

From €389 EUR
₹41,413 INR
As of October 31, 2026
Save €840 EUR (68%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,229 EUR at MOH London · As of November 1, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554184590. Listed at 12 retailers as of October 31, 2026, with prices from €389 to €1,229, a €840 spread on the same certified stone. MOH London lists it at €1,229. 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
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554184590
Dimensions4.25 × 4.16 × 2.76 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal
Top View
4.25 mm4.16 mm0.40 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2554184590
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.3%

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: Oct 31
Current: €1,229 EUR|Low: €388 EUR|High: €1,244 EUR|Avg: €764 EUR|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 3€389 EUR
Retailer 7€573 EUR
Retailer 2€653 EUR
Retailer 6€729 EUR
Retailer 4€788 EUR
Retailer 8€800 EUR
Retailer 5€825 EUR
MOH London€1,229 EUR

37 data points across 8 retailers

12 retailers€389 EUR to €1,229 EUR

A
Cheapest Retailer
-
€389 EUR
₹41,413 INR
B+
Retailer 2
-
€573 EUR
$640 USD
View
B+
Retailer 3
-
€604 EUR
$675 USD
View
B+
Retailer 4
-
€614 EUR
$686 USD
View
B+
Retailer 5
-
€633 EUR
$707 USD
View
B+
Retailer 6
-
€653 EUR
£575 GBP
View
B+
Retailer 7
-
€729 EUR
£641 GBP
View
B
Retailer 8
-
€737 EUR
$823 USD
View
B+
Retailer 9
-
€788 EUR
View
Retailer 10
-
€800 EUR
A$1,375 AUD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
€825 EUR
ZAR 14,890 ZAR
View
Most Expensive
B
MOH London
B7196D1BA · Nov 1
€1,229 EUR
£1,081 GBP
View
11 more retailers have this diamond
Prices start from €389 EURSave up to €840 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
€389 EUR