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Marquise|Natural|GIA

1.21ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6552770005

Certificate GIA 6552770005

Diamond specifications and retailer prices

From HK$36,640 HKD
As of November 1, 2026
Save HK$33,363 HKD (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$70,003 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-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 6552770005. Listed at 12 retailers as of November 1, 2026, with prices from HK$36,640 to HK$70,003, a HK$33,363 spread on the same certified stone. MOH London lists it at HK$70,003. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552770005
Dimensions10.75 × 5.65 × 3.41 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Top View
10.75 mm5.65 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552770005
Side View
Table 55.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.4%

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 1
Current: HK$70,003 HKD|Low: HK$36,640 HKD|High: HK$71,038 HKD|Avg: HK$46,681 HKD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 6HK$36,640 HKD
Retailer 7HK$37,643 HKD
Retailer 3HK$37,957 HKD
Retailer 9HK$40,175 HKD
Retailer 8HK$40,402 HKD
Retailer 2HK$45,253 HKD
Retailer 11HK$45,684 HKD
Retailer 4HK$46,217 HKD
Retailer 10HK$47,338 HKD
Retailer 5HK$58,122 HKD
MOH LondonHK$70,003 HKD

46 data points across 11 retailers

12 retailersHK$36,640 HKD to HK$70,003 HKD

B+
Cheapest Retailer
-
HK$36,640 HKD
B+
Retailer 2
-
HK$37,643 HKD
View
B+
Retailer 3
-
HK$37,957 HKD
View
B
Retailer 4
-
HK$40,175 HKD
View
B
Retailer 5
-
HK$40,402 HKD
View
B
Retailer 6
-
HK$45,253 HKD
View
B
Retailer 7
-
HK$45,684 HKD
View
B
Retailer 8
-
HK$46,217 HKD
View
B
Retailer 9
-
HK$47,283 HKD
View
Retailer 10
-
HK$47,338 HKD
View
Price last confirmed 34 days ago
B
Retailer 11
-
HK$58,122 HKD
View
Most Expensive
B
MOH London
925C02E91 · Nov 4
HK$70,003 HKD
£7,033 GBP
View
11 more retailers have this diamond
Prices start from HK$36,640 HKDSave up to HK$33,363 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$36,640 HKD