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Marquise|Natural|GIA

1.21ct H SI2 Marquise Natural Diamond

VG • H/SI2 • GIA 6551370295

Certificate GIA 6551370295

Diamond specifications and retailer prices

From €2,889 EUR
As of November 4, 2026
Save €2,289 EUR (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €5,178 EUR at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551370295. Listed at 12 retailers as of November 4, 2026, with prices from €2,889 to €5,178, a €2,289 spread on the same certified stone. Helzberg Diamonds lists it at €5,178. 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
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.97°
Pavilion angle39.32°
OriginNatural
Grading LabGIA
CertificateGIA 6551370295
Dimensions10.12 × 5.47 × 3.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.12 mm5.47 mm1.21 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551370295
Side View
Table 60.0%Crown 40.97°Girdle: MED-VTKPavilion 39.32°Culet: NoneDepth 64.8%

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 4
Current: €5,178 EUR|Low: €2,889 EUR|High: €5,391 EUR|Avg: €3,719 EUR|-2.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10€2,889 EUR
Retailer 9€2,942 EUR
Retailer 12€3,087 EUR
Retailer 8€3,121 EUR
Retailer 4€3,153 EUR
Retailer 6€3,316 EUR
Retailer 11€3,684 EUR
Retailer 3€3,736 EUR
Retailer 5€3,841 EUR
Retailer 2€4,007 EUR
Retailer 7€5,157 EUR
Helzberg Diamonds€5,178 EUR

40 data points across 12 retailers

12 retailers€2,889 EUR to €5,178 EUR

B+
Cheapest Retailer
-
€2,889 EUR
B+
Retailer 2
-
€3,087 EUR
View
B+
Retailer 3
-
€3,121 EUR
View
B+
Retailer 4
-
€3,153 EUR
View
B+
Retailer 5
-
€3,316 EUR
View
B
Retailer 6
-
€3,684 EUR
View
B
Retailer 7
-
€3,736 EUR
View
B
Retailer 8
-
€3,835 EUR
View
B
Retailer 9
-
€3,841 EUR
View
B
Retailer 10
-
€4,007 EUR
View
B
Retailer 11
-
€5,157 EUR
View
Most Expensive
B
Helzberg Diamonds
XZRMLLHJNGIPL · Nov 6
€5,178 EUR
$5,781 USD
View
11 more retailers have this diamond
Prices start from €2,889 EURSave up to €2,289 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
€2,889 EUR