CaratHunter
Plans
Marquise|Natural|GIA

0.40ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2557344121

Certificate GIA 2557344121

Diamond specifications and retailer prices

From HK$3,013 HKD
As of November 1, 2026
Save HK$2,713 HKD (47%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$7,184 HKD at MOH London · As of October 21, 2026
View at MOH London

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded H 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 2557344121. Listed at 16 retailers as of November 1, 2026, with a 90% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557344121
Dimensions7.17 × 3.98 × 2.47 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cavity
Top View
7.17 mm3.98 mm0.40 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557344121
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.0%

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: Nov 1
Current: HK$7,184 HKD|Low: HK$2,926 HKD|High: HK$12,106 HKD|Avg: HK$4,758 HKD|-5.3%
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
Retailer 16
November 2, 2026
Retailer 14HK$2,926 HKD
Retailer 10HK$3,013 HKD
Retailer 6HK$3,099 HKD
Retailer 4HK$3,334 HKD
Retailer 16HK$3,334 HKD
Retailer 5HK$3,373 HKD
Retailer 3HK$3,570 HKD
Retailer 15HK$3,570 HKD
Retailer 9HK$4,428 HKD
Retailer 11HK$4,877 HKD
Retailer 12HK$5,047 HKD
Retailer 8HK$5,107 HKD
Retailer 2HK$5,725 HKD
Retailer 13HK$6,263 HKD
MOH LondonHK$7,184 HKD
Retailer 7HK$11,863 HKD

39 data points across 16 retailers

16 retailersHK$3,013 HKD to HK$5,725 HKD

Retailer 1
-
HK$2,926 HKD
$373 USD
Price last confirmed 10 days ago
A
Retailer 2
-
HK$3,013 HKD
View
Retailer 3
-
HK$3,099 HKD
$395 USD
View
Price last confirmed 11 days ago
Retailer 4
-
HK$3,334 HKD
$425 USD
View
Price last confirmed 17 days ago
Retailer 5
-
HK$3,334 HKD
$425 USD
View
Price last confirmed 10 days ago
Retailer 6
-
HK$3,373 HKD
SGD 581 SGD
View
Price last confirmed 10 days ago
Retailer 7
-
HK$3,570 HKD
$455 USD
View
Price last confirmed 12 days ago
Retailer 8
-
HK$3,570 HKD
$455 USD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
HK$3,611 HKD
SGD 622 SGD
View
B
Retailer 10
-
HK$4,428 HKD
£444 GBP
View
B
Retailer 11
-
HK$4,877 HKD
£489 GBP
View
B
Retailer 12
-
HK$5,047 HKD
$643 USD
View
Retailer 13
-
HK$5,107 HKD
A$1,001 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
HK$5,725 HKD
€695 EUR
View
Most Expensive
MOH London
2A1C03072 · Oct 21
HK$7,184 HKD
£721 GBP
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from HK$3,013 HKDSave up to HK$2,713 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 Marquise
HK$3,013 HKD