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Marquise|Natural|GIA

0.66ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 1557148705

Certificate GIA 1557148705

Diamond specifications and retailer prices

From HK$4,198 HKD
SGD 723 SGD
As of October 31, 2026
Save HK$3,831 HKD (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$8,029 HKD at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 0.66ct natural marquise diamond

This 0.66ct natural marquise sits in the half to three-quarter 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 1557148705. Listed at 9 retailers as of October 31, 2026, with prices from HK$4,198 to HK$8,029, a HK$3,831 spread on the same certified stone. Frank Darling lists it at HK$8,029. 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

0.66
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle39.67°
Pavilion angle39.39°
OriginNatural
Grading LabGIA
CertificateGIA 1557148705
Dimensions8.66 × 4.56 × 2.81 mm
L/W Ratio1.90
Culet sizeNone
Top View
8.66 mm4.56 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1557148705
Side View
Table 60.0%Crown 39.67°Girdle: VTN-VTKPavilion 39.39°Culet: NoneDepth 61.7%

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: Oct 31
Current: HK$8,029 HKD|Low: HK$2,961 HKD|High: HK$8,921 HKD|Avg: HK$6,408 HKD|-8.1%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 11HK$3,469 HKD
Retailer 8HK$4,198 HKD
Retailer 9HK$4,697 HKD
Retailer 6HK$5,377 HKD
Retailer 12HK$5,916 HKD
Retailer 5HK$6,111 HKD
Retailer 7HK$6,575 HKD
Retailer 2HK$6,607 HKD
Retailer 4HK$6,748 HKD
Retailer 10HK$7,133 HKD
Frank DarlingHK$8,029 HKD
Retailer 3HK$8,921 HKD

26 data points across 12 retailers

9 retailersHK$4,198 HKD to HK$8,029 HKD

A
Cheapest Retailer
-
HK$4,198 HKD
SGD 723 SGD
A
Retailer 2
-
HK$4,697 HKD
SGD 809 SGD
View
A
Retailer 3
-
HK$5,377 HKD
£540 GBP
View
A
Retailer 4
-
HK$6,111 HKD
$779 USD
View
A
Retailer 5
-
HK$6,575 HKD
$838 USD
View
A
Retailer 6
-
HK$6,607 HKD
€802 EUR
View
B+
Retailer 7
-
HK$6,748 HKD
$860 USD
View
B+
Retailer 8
-
HK$7,133 HKD
$909 USD
View
Most Expensive
B+
Frank Darling
2632130HK · Nov 2
HK$8,029 HKD
$1,023 USD
View
8 more retailers have this diamond
Prices start from HK$4,198 HKDSave up to HK$3,831 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
0.66ct Marquise
HK$4,198 HKD