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Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 6542707387

Certificate GIA 6542707387

Diamond specifications and retailer prices

From HK$18,057 HKD
As of November 5, 2026
Save HK$28,058 HKD (61%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$46,115 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542707387. Listed at 14 retailers as of November 5, 2026, with prices from HK$18,057 to HK$46,115, a HK$28,058 spread on the same certified stone. NZ Jewellers lists it at HK$46,115. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle37.15°
Pavilion angle39.09°
OriginNatural
Grading LabGIA
CertificateGIA 6542707387
Dimensions10.60 × 5.57 × 3.44 mm
L/W Ratio1.90
Top View
10.60 mm5.57 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6542707387
Side View
Table 58.0%Crown 37.15°Girdle: STK-THKPavilion 39.09°Culet: NoneDepth 61.8%

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 5
Current: HK$46,115 HKD|Low: HK$18,057 HKD|High: HK$46,115 HKD|Avg: HK$24,851 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 6, 2026
Retailer 6HK$18,057 HKD
Retailer 14HK$19,789 HKD
Retailer 3HK$19,985 HKD
Retailer 4HK$19,985 HKD
Retailer 12HK$20,910 HKD
Retailer 2HK$21,396 HKD
Retailer 9HK$22,164 HKD
Retailer 5HK$22,337 HKD
Retailer 13HK$23,058 HKD
Retailer 8HK$23,207 HKD
Retailer 7HK$25,675 HKD
Retailer 10HK$26,921 HKD
Retailer 11HK$38,536 HKD
NZ JewellersHK$46,115 HKD

29 data points across 14 retailers

14 retailersHK$18,057 HKD to HK$46,115 HKD

A
Cheapest Retailer
-
HK$18,057 HKD
B+
Retailer 2
-
HK$19,789 HKD
View
Retailer 3
-
HK$19,985 HKD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
HK$19,985 HKD
View
B+
Retailer 5
-
HK$20,910 HKD
View
B+
Retailer 6
-
HK$21,396 HKD
View
B+
Retailer 7
-
HK$22,164 HKD
View
B+
Retailer 8
-
HK$22,337 HKD
View
B+
Retailer 9
-
HK$23,058 HKD
View
B+
Retailer 10
-
HK$23,207 HKD
View
B
Retailer 11
-
HK$25,675 HKD
View
B
Retailer 12
-
HK$26,921 HKD
View
B
Retailer 13
-
HK$38,536 HKD
View
Most Expensive
C
NZ Jewellers
fcd1d8e7-efd8-4cc6-a80c-c6ef134f29a9 · Nov 5
HK$46,115 HKD
$5,884 USD
View
13 more retailers have this diamond
Prices start from HK$18,057 HKDSave up to HK$28,058 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$18,057 HKD