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Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 5553831752

Certificate GIA 5553831752

Diamond specifications and retailer prices

From HK$26,906 HKD
As of November 4, 2026
Save HK$21,310 HKD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$48,216 HKD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5553831752. Listed at 13 retailers as of November 4, 2026, with prices from HK$26,906 to HK$48,216, a HK$21,310 spread on the same certified stone. Helzberg Diamonds lists it at HK$48,216. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.81°
Pavilion angle40.44°
OriginNatural
Grading LabGIA
CertificateGIA 5553831752
Dimensions10.07 × 5.44 × 3.66 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.07 mm5.44 mm1.20 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553831752
Side View
Table 60.0%Crown 42.81°Girdle: MED-VTKPavilion 40.44°Culet: NoneDepth 67.3%

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 4
Current: HK$48,216 HKD|Low: HK$26,906 HKD|High: HK$51,758 HKD|Avg: HK$35,581 HKD|-6.8%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 9HK$26,906 HKD
Retailer 11HK$27,345 HKD
Retailer 7HK$27,564 HKD
Retailer 10HK$28,755 HKD
Retailer 4HK$29,375 HKD
Retailer 2HK$31,060 HKD
Retailer 8HK$33,967 HKD
Retailer 13HK$34,210 HKD
Retailer 3HK$34,571 HKD
Retailer 6HK$34,586 HKD
Retailer 12HK$45,386 HKD
Retailer 5HK$47,981 HKD
Helzberg DiamondsHK$48,216 HKD

33 data points across 13 retailers

13 retailersHK$26,906 HKD to HK$48,216 HKD

B+
Cheapest Retailer
-
HK$26,906 HKD
B+
Retailer 2
-
HK$27,345 HKD
View
B+
Retailer 3
-
HK$27,564 HKD
View
B+
Retailer 4
-
HK$28,755 HKD
View
B+
Retailer 5
-
HK$29,375 HKD
View
B
Retailer 6
-
HK$31,060 HKD
View
B
Retailer 7
-
HK$33,967 HKD
View
B
Retailer 8
-
HK$34,210 HKD
View
B
Retailer 9
-
HK$34,571 HKD
View
B
Retailer 10
-
HK$34,586 HKD
View
B
Retailer 11
-
HK$45,386 HKD
View
B
Retailer 12
-
HK$47,981 HKD
View
Most Expensive
B
Helzberg Diamonds
XZRLLLJOJHNLI · Nov 6
HK$48,216 HKD
$6,152 USD
View
12 more retailers have this diamond
Prices start from HK$26,906 HKDSave up to HK$21,310 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$26,906 HKD