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Cushion|Natural|GIA

0.40ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6555183033

Certificate GIA 6555183033

Diamond specifications and retailer prices

From €271 EUR
₹28,869 INR
As of November 1, 2026
Save €598 EUR (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €870 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555183033. Listed at 10 retailers as of November 1, 2026, with prices from €271 to €870, a €598 spread on the same certified stone. MOH London lists it at €870. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555183033
Dimensions4.14 × 4.12 × 2.84 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
4.14 mm4.12 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6555183033
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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 1
Current: €870 EUR|Low: €271 EUR|High: €881 EUR|Avg: €552 EUR|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2€271 EUR
Retailer 6€405 EUR
Retailer 3€463 EUR
Retailer 4€575 EUR
Retailer 5€584 EUR
Retailer 7€603 EUR
MOH London€870 EUR

38 data points across 7 retailers

10 retailers€271 EUR to €870 EUR

A
Cheapest Retailer
-
€271 EUR
₹28,869 INR
B+
Retailer 2
-
€405 EUR
$453 USD
View
B+
Retailer 3
-
€434 EUR
$485 USD
View
B+
Retailer 4
-
€435 EUR
$486 USD
View
B+
Retailer 5
-
€463 EUR
£407 GBP
View
B
Retailer 6
-
€501 EUR
$560 USD
View
B
Retailer 7
-
€575 EUR
View
B+
Retailer 8
-
€584 EUR
ZAR 10,543 ZAR
View
Retailer 9
-
€603 EUR
A$1,037 AUD
View
Price last confirmed 28 days ago
Most Expensive
B
MOH London
6D4E087F6 · Nov 1
€870 EUR
£765 GBP
View
9 more retailers have this diamond
Prices start from €271 EURSave up to €598 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
€271 EUR