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Cushion|Natural|GIA

0.40ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1553182693

Certificate GIA 1553182693

Diamond specifications and retailer prices

From £325 GBP
₹41,413 INR
As of October 31, 2026
Save £706 GBP (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,030 GBP 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 1553182693. Listed at 11 retailers as of October 29, 2026, with prices from £325 to £1,030, a £706 spread on the same certified stone. MOH London lists it at £1,030. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553182693
Dimensions4.14 × 4.13 × 2.81 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
4.14 mm4.13 mm0.40 ctD / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1553182693
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: 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: Oct 31
Current: £1,030 GBP|Low: £324 GBP|High: £1,037 GBP|Avg: £635 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 2£325 GBP
Retailer 7£478 GBP
Retailer 4£540 GBP
Retailer 6£608 GBP
Retailer 3£657 GBP
Retailer 8£667 GBP
Retailer 5£688 GBP
MOH London£1,030 GBP

35 data points across 8 retailers

11 retailers£325 GBP to £1,030 GBP

A
Cheapest Retailer
-
£325 GBP
₹41,413 INR
B+
Retailer 2
-
£478 GBP
$640 USD
View
B+
Retailer 3
-
£504 GBP
$675 USD
View
B+
Retailer 4
-
£512 GBP
$686 USD
View
B+
Retailer 5
-
£528 GBP
$707 USD
View
B+
Retailer 6
-
£540 GBP
View
B+
Retailer 7
-
£608 GBP
View
B+
Retailer 8
-
£657 GBP
€838 EUR
View
Retailer 9
-
£667 GBP
A$1,375 AUD
View
Price last confirmed 28 days ago
B+
Retailer 10
-
£688 GBP
ZAR 14,890 ZAR
View
Most Expensive
B
MOH London
658151646 · Oct 29
£1,030 GBP
View
10 more retailers have this diamond
Prices start from £325 GBPSave up to £706 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
£325 GBP