Cushion|Natural|GIA

0.40ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 2554184590

Certificate GIA 2554184590

Diamond specifications and retailer prices

From $436 USD
₹41,557 INR
As of October 30, 2026
Save $944 USD (68%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,380 USD at MOH London · As of October 29, 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 29, 2026, with prices from $436 to $1,380, a $944 spread on the same certified stone. MOH London lists it at $1,380. 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 30
Current: $1,380 USD|Low: $434 USD|High: $1,389 USD|Avg: $852 USD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2$436 USD
Retailer 7$640 USD
Retailer 3$730 USD
Retailer 5$815 USD
Retailer 4$879 USD
Retailer 8$894 USD
Retailer 6$920 USD
MOH London$1,380 USD

37 data points across 8 retailers

12 retailers$436 USD to $1,380 USD

A
Cheapest Retailer
-
$436 USD
₹41,557 INR
B+
Retailer 2
-
$640 USD
View
B+
Retailer 3
-
$675 USD
View
B+
Retailer 4
-
$686 USD
View
B+
Retailer 5
-
$707 USD
View
B+
Retailer 6
-
$730 USD
£575 GBP
View
B+
Retailer 7
-
$815 USD
£641 GBP
View
B
Retailer 8
-
$823 USD
View
B+
Retailer 9
-
$879 USD
€837 EUR
View
Retailer 10
-
$894 USD
A$1,375 AUD
View
Price last confirmed 26 days ago
B+
Retailer 11
-
$920 USD
ZAR 14,861 ZAR
View
Most Expensive
B
MOH London
B7196D1BA · Oct 29
$1,380 USD
£1,087 GBP
View
11 more retailers have this diamond
Prices start from $436 USDSave up to $944 USD

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
$436 USD