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Marquise|Natural|GIA

0.40ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6552425978

Certificate GIA 6552425978

Diamond specifications and retailer prices

From HK$2,597 HKD
$331 USD
As of November 1, 2026
Save HK$3,412 HKD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$9,965 HKD at NZ Jewellers · As of November 3, 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 6552425978. Listed at 15 retailers as of November 1, 2026, with a 131% 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
SymmetryGood
FluorescenceNone
Crown angle31.3°
Pavilion angle41.7°
OriginNatural
Grading LabGIA
CertificateGIA 6552425978
Dimensions7.56 × 3.86 × 2.39 mm
L/W Ratio1.96
Girdle conditionPolished
Top View
7.56 mm3.86 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6552425978
Side View
Table 57.0%Crown 31.3°Girdle: VTK-XTKPavilion 41.7°Culet: NoneDepth 61.9%

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$9,965 HKD|Low: HK$2,597 HKD|High: HK$9,965 HKD|Avg: HK$4,436 HKD
NZ Jewellers
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
November 3, 2026
Retailer 10HK$2,597 HKD
Retailer 7HK$2,903 HKD
Retailer 3HK$2,997 HKD
Retailer 5HK$3,052 HKD
Retailer 2HK$3,327 HKD
Retailer 6HK$3,499 HKD
Retailer 9HK$3,625 HKD
Retailer 13HK$3,907 HKD
Retailer 11HK$4,315 HKD
Retailer 4HK$4,400 HKD
Retailer 14HK$4,852 HKD
Retailer 8HK$5,263 HKD
Retailer 12HK$6,009 HKD
NZ JewellersHK$9,965 HKD

31 data points across 14 retailers

15 retailersHK$2,597 HKD to HK$6,009 HKD

A
Cheapest Retailer
-
HK$2,597 HKD
$331 USD
B+
Retailer 2
-
HK$2,903 HKD
$370 USD
View
B+
Retailer 3
-
HK$2,997 HKD
$382 USD
View
B+
Retailer 4
-
HK$3,052 HKD
$389 USD
View
B+
Retailer 5
-
HK$3,327 HKD
£334 GBP
View
B+
Retailer 6
-
HK$3,499 HKD
$446 USD
View
B+
Retailer 7
-
HK$3,625 HKD
$462 USD
View
B
Retailer 8
-
HK$3,907 HKD
$498 USD
View
B
Retailer 9
-
HK$4,315 HKD
$550 USD
View
B
Retailer 10
-
HK$4,400 HKD
ZAR 9,059 ZAR
View
Retailer 11
-
HK$4,545 HKD
A$891 AUD
View
Price last confirmed 30 days ago
B
Retailer 12
-
HK$4,852 HKD
€589 EUR
View
B
Retailer 13
-
HK$5,263 HKD
£528 GBP
View
B
Retailer 14
-
HK$6,009 HKD
£603 GBP
View
Most Expensive
NZ Jewellers
982d8690-a459-4ed2-acf7-78356171462e · Nov 3
HK$9,965 HKD
$1,270 USD
View
Price under review
14 more retailers have this diamond
Prices start from HK$2,597 HKDSave up to HK$3,412 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$2,597 HKD