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Marquise|Natural|GIA

0.40ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6545301868

Certificate GIA 6545301868

Diamond specifications and retailer prices

From HK$2,166 HKD
$276 USD
As of November 1, 2026
Save HK$5,269 HKD (71%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$10,616 HKD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise 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 6545301868. Listed at 8 retailers as of November 1, 2026, with a 243% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6545301868
Dimensions7.81 × 3.87 × 2.28 mm
L/W Ratio2.02
Top View
7.81 mm3.87 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6545301868
Side View
Table 56.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 59.0%

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$4,244 HKD|Low: HK$1,711 HKD|High: HK$7,434 HKD|Avg: HK$3,338 HKD|+50.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 9HK$1,711 HKD
Retailer 7HK$2,166 HKD
Retailer 8HK$2,410 HKD
Retailer 3HK$2,497 HKD
Retailer 10HK$2,499 HKD
Retailer 12HK$2,526 HKD
Retailer 5HK$2,671 HKD
Retailer 2HK$3,107 HKD
Retailer 4HK$3,474 HKD
Retailer 1HK$4,244 HKD
Retailer 11HK$5,421 HKD
Retailer 6HK$7,434 HKD

35 data points across 12 retailers

8 retailersHK$2,166 HKD to HK$7,434 HKD

A
Cheapest Retailer
-
HK$2,166 HKD
$276 USD
Retailer 2
-
HK$2,346 HKD
$299 USD
View
Price last confirmed 41 days ago
A
Retailer 3
-
HK$2,410 HKD
View
A
Retailer 4
-
HK$2,671 HKD
SGD 460 SGD
View
Retailer 5
-
HK$3,154 HKD
$402 USD
View
Price last confirmed 42 days ago
B
Retailer 6
-
HK$4,244 HKD
£426 GBP
View
B
Retailer 7
-
HK$7,434 HKD
CA$1,316 CAD
View
Most Expensive
NZ Jewellers
dff665cc-3735-46fd-a963-5563b1b62cb7 · Sep 21
HK$10,616 HKD
$1,353 USD
View
Price under review
7 more retailers have this diamond
Prices start from HK$2,166 HKDSave up to HK$5,269 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$2,166 HKD