CaratHunter
Plans
Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

VG • K/SI1 • GIA 1555561508

Certificate GIA 1555561508

Diamond specifications and retailer prices

From HK$21,796 HKD
As of November 5, 2026
Save HK$22,533 HKD (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$46,303 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1555561508. Listed at 10 retailers as of November 4, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle39.97°
Pavilion angle40.64°
OriginNatural
Grading LabGIA
CertificateGIA 1555561508
Dimensions10.39 × 5.47 × 3.54 mm
L/W Ratio1.90
Culet sizeNone
Top View
10.39 mm5.47 mm1.20 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1555561508
Side View
Table 60.0%Crown 39.97°Girdle: MED-THKPavilion 40.64°Culet: NoneDepth 64.7%

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$27,603 HKD|Low: HK$19,562 HKD|High: HK$44,979 HKD|Avg: HK$27,609 HKD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2HK$19,562 HKD
Retailer 3HK$21,435 HKD
Retailer 7HK$21,796 HKD
Retailer 12HK$23,065 HKD
Retailer 10HK$23,771 HKD
Retailer 9HK$26,412 HKD
Retailer 11HK$26,412 HKD
Retailer 1HK$27,603 HKD
Retailer 4HK$28,889 HKD
Retailer 6HK$30,981 HKD
Retailer 8HK$38,732 HKD
Retailer 5HK$44,328 HKD

40 data points across 12 retailers

10 retailersHK$21,796 HKD to HK$44,328 HKD

B+
Cheapest Retailer
-
HK$21,796 HKD
B
Retailer 2
-
HK$23,065 HKD
View
B
Retailer 3
-
HK$23,771 HKD
View
B
Retailer 4
-
HK$26,412 HKD
View
B
Retailer 5
-
HK$26,412 HKD
View
B
Retailer 6
-
HK$27,603 HKD
View
B
Retailer 7
-
HK$30,981 HKD
View
C
Retailer 8
-
HK$38,732 HKD
View
B
Retailer 9
-
HK$44,328 HKD
View
Most Expensive
NZ Jewellers
ce9108f9-6f9e-4a33-8266-5974e0a46584 · Sep 30
HK$46,303 HKD
$5,908 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from HK$21,796 HKDSave up to HK$22,533 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$21,796 HKD