Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

ID • H/SI1 • GIA 2557359146

Certificate GIA 2557359146

Diamond specifications and retailer prices

From HK$43,646 HKD
As of November 5, 2026
Save HK$7,493 HKD (15%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$80,866 HKD at NZ Jewellers · As of October 24, 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 H 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 2557359146. Listed at 20 retailers as of November 5, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.24°
Pavilion angle41.41°
OriginNatural
Grading LabGIA
CertificateGIA 2557359146
Dimensions10.40 × 5.52 × 3.52 mm
L/W Ratio1.88
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
10.40 mm5.52 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557359146
Side View
Table 63.0%Crown 38.24°Girdle: Slightly ThickPavilion 41.41°Culet: NoneDepth 63.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
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$80,866 HKD|Low: HK$38,199 HKD|High: HK$80,866 HKD|Avg: HK$48,613 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 6, 2026
Retailer 7HK$38,199 HKD
Retailer 6HK$38,489 HKD
Retailer 4HK$38,521 HKD
Retailer 15HK$39,344 HKD
Retailer 22HK$40,770 HKD
Retailer 23HK$40,990 HKD
Retailer 12HK$43,270 HKD
Retailer 9HK$43,646 HKD
Retailer 3HK$43,803 HKD
Retailer 19HK$43,803 HKD
Retailer 21HK$43,803 HKD
Retailer 16HK$45,567 HKD
Retailer 10HK$46,029 HKD
Retailer 17HK$46,100 HKD
Retailer 20HK$47,212 HKD
Retailer 2HK$47,730 HKD
Retailer 11HK$51,139 HKD
Retailer 18HK$52,550 HKD
Retailer 14HK$53,326 HKD
Retailer 13HK$58,875 HKD
Retailer 8HK$70,756 HKD
Retailer 5HK$71,320 HKD
NZ JewellersHK$80,866 HKD

9 data points across 23 retailers

20 retailersHK$43,646 HKD to HK$51,139 HKD

Retailer 1
-
HK$38,199 HKD
Price last confirmed 12 days ago
Retailer 2
-
HK$38,489 HKD
View
Price last confirmed 12 days ago
Retailer 3
-
HK$38,521 HKD
View
Price last confirmed 13 days ago
Retailer 4
-
HK$40,770 HKD
View
Price last confirmed 13 days ago
Retailer 5
-
HK$40,990 HKD
View
Price last confirmed 11 days ago
Retailer 6
-
HK$43,270 HKD
View
Price last confirmed 13 days ago
B
Retailer 7
-
HK$43,646 HKD
View
Retailer 8
-
HK$43,803 HKD
View
Price last confirmed 12 days ago
Retailer 9
-
HK$43,803 HKD
View
Price last confirmed 13 days ago
Retailer 10
-
HK$43,803 HKD
View
Price last confirmed 13 days ago
B
Retailer 11
-
HK$46,029 HKD
View
Retailer 12
-
HK$46,100 HKD
View
Price last confirmed 11 days ago
B
Retailer 13
-
HK$47,730 HKD
View
B
Retailer 14
-
HK$51,139 HKD
View
Retailer 15
-
HK$52,550 HKD
View
Price last confirmed 12 days ago
Retailer 16
-
HK$53,326 HKD
View
Price last confirmed 29 days ago
Retailer 17
-
HK$58,875 HKD
View
Price last confirmed 11 days ago
Retailer 18
-
HK$70,756 HKD
View
Price last confirmed 15 days ago
Retailer 19
-
HK$71,320 HKD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
1844168c-8e69-4a0c-b643-6b09d37bb58f · Oct 24
HK$80,866 HKD
$10,318 USD
View
Price under review
19 more retailers have this diamond
Prices start from HK$43,646 HKDSave up to HK$7,493 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$43,646 HKD