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Marquise|Natural|GIA

1.21ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2245057364

Certificate GIA 2245057364

Diamond specifications and retailer prices

From HK$28,505 HKD
As of November 4, 2026
Save HK$22,587 HKD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$51,092 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245057364. Listed at 13 retailers as of November 4, 2026, with prices from HK$28,505 to HK$51,092, a HK$22,587 spread on the same certified stone. Helzberg Diamonds lists it at HK$51,092. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.96°
Pavilion angle37.63°
OriginNatural
Grading LabGIA
CertificateGIA 2245057364
Dimensions10.52 × 5.56 × 3.39 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.52 mm5.56 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245057364
Side View
Table 58.0%Crown 39.96°Girdle: STK-THKPavilion 37.63°Culet: NoneDepth 61.0%

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$51,092 HKD|Low: HK$28,505 HKD|High: HK$54,830 HKD|Avg: HK$36,155 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 6, 2026
Retailer 10HK$28,505 HKD
Retailer 4HK$29,226 HKD
Retailer 8HK$29,798 HKD
Retailer 7HK$30,464 HKD
Retailer 3HK$31,107 HKD
Retailer 5HK$31,350 HKD
Retailer 6HK$32,698 HKD
Retailer 9HK$35,268 HKD
Retailer 12HK$36,130 HKD
Retailer 13HK$36,413 HKD
Retailer 2HK$36,640 HKD
Retailer 11HK$50,888 HKD
Helzberg DiamondsHK$51,092 HKD

39 data points across 13 retailers

13 retailersHK$28,505 HKD to HK$51,092 HKD

A
Cheapest Retailer
-
HK$28,505 HKD
A
Retailer 2
-
HK$29,226 HKD
View
A
Retailer 3
-
HK$29,798 HKD
View
B+
Retailer 4
-
HK$30,464 HKD
View
B+
Retailer 5
-
HK$31,107 HKD
View
Retailer 6
-
HK$31,350 HKD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
HK$32,698 HKD
View
B+
Retailer 8
-
HK$35,268 HKD
View
B+
Retailer 9
-
HK$36,130 HKD
View
B+
Retailer 10
-
HK$36,413 HKD
View
B+
Retailer 11
-
HK$36,640 HKD
View
B
Retailer 12
-
HK$50,888 HKD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLGLNJMK · Nov 6
HK$51,092 HKD
$6,519 USD
View
12 more retailers have this diamond
Prices start from HK$28,505 HKDSave up to HK$22,587 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$28,505 HKD