CaratHunter
Plans
Marquise|Natural|GIA

1.20ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2557877511

Certificate GIA 2557877511

Diamond specifications and retailer prices

From HK$23,301 HKD
As of November 6, 2026
Save HK$31,193 HKD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$54,493 HKD at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557877511. Listed at 19 retailers as of November 5, 2026, with prices from HK$23,301 to HK$54,493, a HK$31,193 spread on the same certified stone. NZ Jewellers lists it at HK$54,493. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557877511
Dimensions10.35 × 5.44 × 3.47 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Twinning Wisp, Cavity, Needle
Top View
10.35 mm5.44 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557877511
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NDepth 63.9%

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 6
Current: HK$54,493 HKD|Low: HK$23,301 HKD|High: HK$54,493 HKD|Avg: HK$33,912 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 7, 2026
Retailer 7HK$23,301 HKD
Retailer 13HK$29,124 HKD
Retailer 4HK$29,704 HKD
Retailer 8HK$30,754 HKD
Retailer 3HK$31,279 HKD
Retailer 11HK$31,279 HKD
Retailer 12HK$31,279 HKD
Retailer 2HK$31,679 HKD
Retailer 5HK$31,898 HKD
Retailer 6HK$33,191 HKD
Retailer 9HK$34,312 HKD
Retailer 14HK$36,091 HKD
Retailer 10HK$52,299 HKD
NZ JewellersHK$54,493 HKD

30 data points across 14 retailers

19 retailersHK$23,301 HKD to HK$54,493 HKD

A
Cheapest Retailer
-
HK$23,301 HKD
B+
Retailer 2
-
HK$24,860 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$25,997 HKD
View
B+
Retailer 4
-
HK$27,525 HKD
View
B+
Retailer 5
-
HK$29,124 HKD
View
B+
Retailer 6
-
HK$29,704 HKD
View
B+
Retailer 7
-
HK$30,754 HKD
View
B
Retailer 8
-
HK$31,279 HKD
View
B
Retailer 9
-
HK$31,279 HKD
View
Retailer 10
-
HK$31,279 HKD
View
Price last confirmed 9 days ago
B
Retailer 11
-
HK$31,679 HKD
View
B
Retailer 12
-
HK$31,898 HKD
View
B
Retailer 13
-
HK$32,423 HKD
View
B
Retailer 14
-
HK$33,191 HKD
View
B
Retailer 15
-
HK$33,309 HKD
View
B+
Retailer 16
-
HK$34,312 HKD
View
B
Retailer 17
-
HK$36,091 HKD
View
B
Retailer 18
-
HK$52,299 HKD
View
Most Expensive
C
NZ Jewellers
c2a31624-9175-4791-8f74-0e7976ecf87d · Nov 5
HK$54,493 HKD
$6,953 USD
View
18 more retailers have this diamond
Prices start from HK$23,301 HKDSave up to HK$31,193 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
1.20ct Marquise
HK$23,301 HKD