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Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2566258812

Certificate GIA 2566258812

Diamond specifications and retailer prices

From HK$35,809 HKD
As of November 6, 2026
Save HK$34,406 HKD (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$80,992 HKD at NZ Jewellers · As of October 17, 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 2566258812. Listed at 19 retailers as of November 4, 2026, with a 96% 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 2566258812
Dimensions10.66 × 5.52 × 3.50 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Indented Natural
Top View
10.66 mm5.52 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2566258812
Side View
Table 59.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 63.5%

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$46,358 HKD|Low: HK$35,511 HKD|High: HK$72,198 HKD|Avg: HK$50,792 HKD|-3.0%
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 12HK$35,809 HKD
Retailer 13HK$39,469 HKD
Retailer 3HK$40,864 HKD
Retailer 9HK$42,737 HKD
Retailer 4HK$44,109 HKD
Retailer 6HK$44,203 HKD
Retailer 7HK$45,402 HKD
Retailer 1HK$46,358 HKD
Retailer 5HK$48,122 HKD
Retailer 2HK$49,015 HKD
Retailer 11HK$51,993 HKD
Retailer 8HK$58,310 HKD
Retailer 14HK$66,383 HKD
Retailer 10HK$70,215 HKD

38 data points across 14 retailers

19 retailersHK$35,809 HKD to HK$70,215 HKD

B+
Cheapest Retailer
-
HK$35,809 HKD
B+
Retailer 2
-
HK$39,469 HKD
View
Retailer 3
-
HK$40,864 HKD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
HK$42,737 HKD
View
B+
Retailer 5
-
HK$44,109 HKD
View
Final sale: no returns
B+
Retailer 6
-
HK$44,203 HKD
View
B+
Retailer 7
-
HK$45,402 HKD
View
B+
Retailer 8
-
HK$46,358 HKD
View
Retailer 9
-
HK$48,122 HKD
View
Price last confirmed 33 days ago
Retailer 10
-
HK$48,427 HKD
View
Price last confirmed 20 days ago
Retailer 11
-
HK$48,427 HKD
View
Price last confirmed 21 days ago
Retailer 12
-
HK$48,427 HKD
View
Price last confirmed 19 days ago
B
Retailer 13
-
HK$49,015 HKD
View
B
Retailer 14
-
HK$51,993 HKD
View
Retailer 15
-
HK$55,873 HKD
View
Price last confirmed 18 days ago
B
Retailer 16
-
HK$58,310 HKD
View
Retailer 17
-
HK$66,383 HKD
View
Price last confirmed 9 days ago
B
Retailer 18
-
HK$70,215 HKD
View
Most Expensive
NZ Jewellers
fd206e61-88f7-4d07-bbc1-3efa3b71bb88 · Oct 17
HK$80,992 HKD
$10,334 USD
View
Price last confirmed 19 days ago
18 more retailers have this diamond
Prices start from HK$35,809 HKDSave up to HK$34,406 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$35,809 HKD