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Marquise|Natural|GIA

1.21ct H SI1 Marquise Natural Diamond

ID • H/SI1 • GIA 1558990218

Certificate GIA 1558990218

Diamond specifications and retailer prices

From HK$39,500 HKD
As of November 5, 2026
Save HK$6,058 HKD (13%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$45,559 HKD at Diamonds Direct · As of November 6, 2026
View at Diamonds Direct

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 1558990218. Listed at 2 retailers as of November 5, 2026, with prices from HK$39,500 to HK$45,559, a HK$6,058 spread on the same certified stone. Diamonds Direct lists it at HK$45,559. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558990218
Dimensions10.08 × 5.51 × 3.63 mm
L/W Ratio1.83
Top View
10.08 mm5.51 mm1.21 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558990218
Side View
Table 64.0%CrownGirdlePavilionCuletDepth 65.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: HK$45,559 HKD|Low: HK$39,500 HKD|High: HK$50,880 HKD|Avg: HK$44,247 HKD|-10.5%
Diamonds Direct
Retailer 2
November 6, 2026
Retailer 2HK$39,500 HKD
Diamonds DirectHK$45,559 HKD

11 data points across 2 retailers

2 retailersHK$39,500 HKD to HK$45,559 HKD

B
Cheapest Retailer
-
HK$39,500 HKD
Most Expensive
B
Diamonds Direct
1101320 · Nov 6
HK$45,559 HKD
$5,813 USD
View
1 more retailer has this diamond
Prices start from HK$39,500 HKDSave up to HK$6,058 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$39,500 HKD