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Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555015831

Certificate GIA 6555015831

Diamond specifications and retailer prices

From HK$39,359 HKD
As of November 6, 2026
Save HK$33,560 HKD (46%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$86,823 HKD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555015831. Listed at 20 retailers as of November 2, 2026, with a 85% 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

1.20
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555015831
Dimensions12.15 × 5.28 × 3.03 mm
L/W Ratio2.30
Top View
12.15 mm5.28 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555015831
Side View
Table 64.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 57.5%

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 6
Current: HK$49,376 HKD|Low: HK$39,359 HKD|High: HK$77,394 HKD|Avg: HK$53,456 HKD|-2.8%
Retailer 1
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 6, 2026
Retailer 4HK$39,359 HKD
Retailer 11HK$40,598 HKD
Retailer 2HK$42,792 HKD
Retailer 8HK$43,451 HKD
Retailer 9HK$46,123 HKD
Retailer 1HK$49,376 HKD
Retailer 12HK$49,376 HKD
Retailer 5HK$49,430 HKD
Retailer 7HK$51,021 HKD
Retailer 13HK$53,866 HKD
Retailer 6HK$55,136 HKD
Retailer 10HK$59,243 HKD
Retailer 3HK$67,778 HKD
Retailer 14HK$72,919 HKD

38 data points across 14 retailers

20 retailersHK$39,359 HKD to HK$72,919 HKD

B+
Cheapest Retailer
-
HK$39,359 HKD
B+
Retailer 2
-
HK$40,598 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$42,792 HKD
View
B+
Retailer 4
-
HK$43,451 HKD
View
B+
Retailer 5
-
HK$46,123 HKD
View
Retailer 6
-
HK$47,024 HKD
View
Price last confirmed 36 days ago
Retailer 7
-
HK$47,024 HKD
View
Price last confirmed 36 days ago
B
Retailer 8
-
HK$47,393 HKD
View
B+
Retailer 9
-
HK$49,376 HKD
View
B+
Retailer 10
-
HK$49,376 HKD
View
Retailer 11
-
HK$49,430 HKD
View
Price last confirmed 27 days ago
B+
Retailer 12
-
HK$51,021 HKD
View
B
Retailer 13
-
HK$53,866 HKD
View
Retailer 14
-
HK$54,266 HKD
View
Price last confirmed 52 days ago
Retailer 15
-
HK$54,266 HKD
View
Price last confirmed 38 days ago
Retailer 16
-
HK$55,136 HKD
View
Price last confirmed 14 days ago
B
Retailer 17
-
HK$59,243 HKD
View
Retailer 18
-
HK$67,778 HKD
View
Price last confirmed 9 days ago
B
Retailer 19
-
HK$72,919 HKD
View
Most Expensive
NZ Jewellers
ded45a2b-0ace-4b94-9ef8-4363f099808d · Sep 30
HK$86,823 HKD
$11,078 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from HK$39,359 HKDSave up to HK$33,560 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+
1.20ct Marquise
HK$39,359 HKD