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Marquise|Natural|GIA

1.21ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6555815638

Certificate GIA 6555815638

Diamond specifications and retailer prices

From HK$43,208 HKD
As of November 5, 2026
Save HK$37,141 HKD (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$91,462 HKD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555815638. Listed at 15 retailers as of November 4, 2026, with a 86% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555815638
Dimensions10.54 × 5.44 × 3.46 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizeNone
Top View
10.54 mm5.44 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555815638
Side View
Table 54.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 63.5%

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 5
Current: HK$51,931 HKD|Low: HK$43,208 HKD|High: HK$81,532 HKD|Avg: HK$55,873 HKD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 8HK$43,208 HKD
Retailer 9HK$46,084 HKD
Retailer 10HK$46,115 HKD
Retailer 2HK$49,540 HKD
Retailer 1HK$51,931 HKD
Retailer 7HK$53,075 HKD
Retailer 4HK$53,232 HKD
Retailer 5HK$59,509 HKD
Retailer 6HK$67,182 HKD
Retailer 3HK$80,349 HKD

38 data points across 10 retailers

15 retailersHK$43,208 HKD to HK$80,349 HKD

B+
Cheapest Retailer
-
HK$43,208 HKD
B
Retailer 2
-
HK$46,084 HKD
View
B
Retailer 3
-
HK$46,115 HKD
View
B
Retailer 4
-
HK$49,540 HKD
View
Retailer 5
-
HK$49,540 HKD
View
Price last confirmed 9 days ago
B
Retailer 6
-
HK$49,540 HKD
View
B
Retailer 7
-
HK$51,931 HKD
View
Retailer 8
-
HK$53,075 HKD
View
Price last confirmed 16 days ago
B
Retailer 9
-
HK$53,232 HKD
View
B
Retailer 10
-
HK$57,166 HKD
View
B
Retailer 11
-
HK$59,509 HKD
View
Retailer 12
-
HK$60,277 HKD
View
Price last confirmed 15 days ago
B
Retailer 13
-
HK$67,182 HKD
View
B
Retailer 14
-
HK$80,349 HKD
View
Most Expensive
NZ Jewellers
f1aca82f-d0db-43c3-a5f3-41e16ae1135e · Nov 3
HK$91,462 HKD
$11,670 USD
View
Price under review
14 more retailers have this diamond
Prices start from HK$43,208 HKDSave up to HK$37,141 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+
1.21ct Marquise
HK$43,208 HKD