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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 6555960270

Certificate GIA 6555960270

Diamond specifications and retailer prices

From HK$23,348 HKD
As of November 4, 2026
Save HK$21,051 HKD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$44,399 HKD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555960270. Listed at 12 retailers as of November 4, 2026, with prices from HK$23,348 to HK$44,399, a HK$21,051 spread on the same certified stone. Helzberg Diamonds lists it at HK$44,399. 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

1.21
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.95°
Pavilion angle37.98°
OriginNatural
Grading LabGIA
CertificateGIA 6555960270
Dimensions11.13 × 5.44 × 3.28 mm
L/W Ratio2.05
Culet sizeNone
Top View
11.13 mm5.44 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555960270
Side View
Table 58.0%Crown 36.95°Girdle: ThickPavilion 37.98°Culet: NDepth 60.2%

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 4
Current: HK$44,399 HKD|Low: HK$23,348 HKD|High: HK$47,181 HKD|Avg: HK$30,878 HKD|-5.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 8HK$23,348 HKD
Retailer 5HK$23,881 HKD
Retailer 7HK$23,912 HKD
Retailer 9HK$25,166 HKD
Retailer 2HK$27,243 HKD
Retailer 3HK$28,128 HKD
Retailer 10HK$29,625 HKD
Retailer 11HK$29,900 HKD
Retailer 12HK$30,464 HKD
Retailer 6HK$31,036 HKD
Retailer 4HK$41,664 HKD
Helzberg DiamondsHK$44,399 HKD

38 data points across 12 retailers

12 retailersHK$23,348 HKD to HK$44,399 HKD

A
Cheapest Retailer
-
HK$23,348 HKD
A
Retailer 2
-
HK$23,881 HKD
View
A
Retailer 3
-
HK$23,912 HKD
View
A
Retailer 4
-
HK$25,166 HKD
View
B+
Retailer 5
-
HK$27,243 HKD
View
B+
Retailer 6
-
HK$28,128 HKD
View
B+
Retailer 7
-
HK$29,625 HKD
View
B+
Retailer 8
-
HK$29,900 HKD
View
B+
Retailer 9
-
HK$30,464 HKD
View
B+
Retailer 10
-
HK$31,036 HKD
View
B
Retailer 11
-
HK$41,664 HKD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLLPMGING · Nov 6
HK$44,399 HKD
$5,665 USD
View
11 more retailers have this diamond
Prices start from HK$23,348 HKDSave up to HK$21,051 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
1.21ct Marquise
HK$23,348 HKD