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Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1555018794

Certificate GIA 1555018794

Diamond specifications and retailer prices

From HK$58,295 HKD
As of November 5, 2026
Save HK$21,655 HKD (27%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$105,427 HKD at MOH London · As of October 8, 2026
View at MOH London

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two 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 1555018794. Listed at 14 retailers as of November 5, 2026, with a 37% 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

1.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.86°
Pavilion angle38.01°
OriginNatural
Grading LabGIA
CertificateGIA 1555018794
Dimensions11.54 × 6.02 × 3.54 mm
L/W Ratio1.92
Girdle conditionVery Thick
Key to symbols
Feather, Twinning Wisp, Cloud
Top View
11.54 mm6.02 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555018794
Side View
Table 60.0%Crown 35.86°Girdle: THK-VTKPavilion 38.01°Culet: NoneDepth 58.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$105,427 HKD|Low: HK$54,627 HKD|High: HK$105,427 HKD|Avg: HK$73,318 HKD
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
November 7, 2026
Retailer 13HK$58,679 HKD
Retailer 7HK$60,089 HKD
Retailer 4HK$61,563 HKD
Retailer 11HK$63,193 HKD
Retailer 3HK$66,782 HKD
Retailer 12HK$69,518 HKD
Retailer 2HK$73,570 HKD
Retailer 8HK$75,921 HKD
Retailer 6HK$77,402 HKD
Retailer 5HK$79,949 HKD
Retailer 9HK$82,512 HKD
Retailer 10HK$89,339 HKD
MOH LondonHK$105,427 HKD

42 data points across 13 retailers

14 retailersHK$58,295 HKD to HK$79,949 HKD

B+
Cheapest Retailer
-
HK$58,295 HKD
B
Retailer 2
-
HK$60,089 HKD
View
Final sale: no returns
B
Retailer 3
-
HK$60,332 HKD
View
B
Retailer 4
-
HK$61,563 HKD
View
Retailer 5
-
HK$62,676 HKD
View
Price last confirmed 30 days ago
B
Retailer 6
-
HK$69,518 HKD
View
B
Retailer 7
-
HK$72,002 HKD
View
B
Retailer 8
-
HK$73,570 HKD
View
B
Retailer 9
-
HK$75,921 HKD
View
B
Retailer 10
-
HK$77,402 HKD
View
Retailer 11
-
HK$78,343 HKD
View
Price last confirmed 62 days ago
B
Retailer 12
-
HK$79,949 HKD
View
Retailer 13
-
HK$82,512 HKD
View
Price last confirmed 30 days ago
Most Expensive
MOH London
452DDEF94 · Oct 8
HK$105,427 HKD
£10,592 GBP
View
Price last confirmed 29 days ago
13 more retailers have this diamond
Prices start from HK$58,295 HKDSave up to HK$21,655 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.

B+
1.50ct Marquise
HK$58,295 HKD