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Marquise|Natural|GIA

1.21ct M SI2 Marquise Natural Diamond

GD • M/SI2 • GIA 3545642825

Certificate GIA 3545642825

Diamond specifications and retailer prices

From €1,000 EUR
$1,116 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: €1,000 EUR at The Diamond Guys
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at The Diamond Guys

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 3545642825. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
M
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.39°
Pavilion angle41.33°
OriginNatural
Grading LabGIA
CertificateGIA 3545642825
Dimensions9.95 × 5.39 × 3.63 mm
L/W Ratio1.85
Top View
9.95 mm5.39 mm1.21 ctM / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3545642825
Side View
Table 59.0%Crown 43.39°Girdle: THK-VTKPavilion 41.33°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: €1,303 EUR|Low: €611 EUR|High: €2,066 EUR|Avg: €1,248 EUR|-15.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
The Diamond Guys
August 20, 2026
Retailer 3€611 EUR
Retailer 2€926 EUR
The Diamond Guys€1,000 EUR
Retailer 5€1,244 EUR
Retailer 1€1,303 EUR
Retailer 4€1,519 EUR

63 data points across 6 retailers

1 retailer

B+
The Diamond Guys
1921518338 · Nov 6
€1,000 EUR
$1,116 USD
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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
€1,000 EUR