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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 €4,514 EUR
As of November 5, 2026
Save €692 EUR (13%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €5,206 EUR 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 €4,514 to €5,206, a €692 spread on the same certified stone. Diamonds Direct lists it at €5,206. 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: €5,206 EUR|Low: €4,514 EUR|High: €5,815 EUR|Avg: €5,057 EUR|-10.5%
Diamonds Direct
Retailer 2
November 6, 2026
Retailer 2€4,514 EUR
Diamonds Direct€5,206 EUR

11 data points across 2 retailers

2 retailers€4,514 EUR to €5,206 EUR

B
Cheapest Retailer
-
€4,514 EUR
Most Expensive
B
Diamonds Direct
1101320 · Nov 6
€5,206 EUR
$5,813 USD
View
1 more retailer has this diamond
Prices start from €4,514 EURSave up to €692 EUR

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
€4,514 EUR