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Cushion|Natural|GIA

0.40ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2557428722

Certificate GIA 2557428722

Diamond specifications and retailer prices

From HK$1,838 HKD
₹22,309 INR
As of November 2, 2026
Save HK$4,001 HKD (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$5,839 HKD 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 J 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 2557428722. Listed at 16 retailers as of November 1, 2026, with prices from HK$1,838 to HK$5,839, a HK$4,001 spread on the same certified stone. MOH London lists it at HK$5,839. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557428722
Dimensions5.32 × 3.59 × 2.46 mm
L/W Ratio1.48
Top View
5.32 mm3.59 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557428722
Side View
Table 68.0%CrownGirdle: MED-ETKPavilionCulet: 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 2
Current: HK$5,839 HKD|Low: HK$1,838 HKD|High: HK$6,278 HKD|Avg: HK$3,600 HKD|-7.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 2HK$1,838 HKD
Retailer 6HK$2,209 HKD
Retailer 12HK$2,354 HKD
Retailer 5HK$2,723 HKD
Retailer 4HK$2,740 HKD
Retailer 13HK$3,138 HKD
Retailer 14HK$3,217 HKD
Retailer 9HK$3,254 HKD
Retailer 7HK$3,350 HKD
Retailer 15HK$3,451 HKD
Retailer 3HK$3,552 HKD
Retailer 11HK$3,920 HKD
Retailer 10HK$4,737 HKD
Retailer 8HK$5,117 HKD
MOH LondonHK$5,839 HKD

24 data points across 15 retailers

16 retailersHK$1,838 HKD to HK$5,839 HKD

A
Cheapest Retailer
-
HK$1,838 HKD
₹22,309 INR
A
Retailer 2
-
HK$2,209 HKD
View
A
Retailer 3
-
HK$2,354 HKD
$300 USD
View
A
Retailer 4
-
HK$2,723 HKD
$347 USD
View
A
Retailer 5
-
HK$2,740 HKD
SGD 472 SGD
View
A
Retailer 6
-
HK$3,138 HKD
$400 USD
View
B+
Retailer 7
-
HK$3,217 HKD
$410 USD
View
A
Retailer 8
-
HK$3,254 HKD
£327 GBP
View
Retailer 9
-
HK$3,350 HKD
$427 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
HK$3,451 HKD
$440 USD
View
B+
Retailer 11
-
HK$3,552 HKD
$453 USD
View
B+
Retailer 12
-
HK$3,920 HKD
ZAR 8,071 ZAR
View
Retailer 13
-
HK$4,308 HKD
A$845 AUD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
HK$4,737 HKD
€575 EUR
View
B
Retailer 15
-
HK$5,117 HKD
£514 GBP
View
Most Expensive
B
MOH London
DBDC5FBD7 · Nov 1
HK$5,839 HKD
£586 GBP
View
15 more retailers have this diamond
Prices start from HK$1,838 HKDSave up to HK$4,001 HKD

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
HK$1,838 HKD