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Marquise|Lab Grown|IGI

1.21ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG831685819

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831685819

Diamond specifications and retailer prices

From €324 EUR
As of November 6, 2026
Save €598 EUR (65%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €922 EUR at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831685819 or 831685819. Listed at 9 retailers as of November 6, 2026, with prices from €324 to €922, a €598 spread on the same certified stone. Frank Darling lists it at €922. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831685819
Dimensions10.77 × 5.56 × 3.54 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.77 mm5.56 mm1.21 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831685819
Side View
Table 61.0%Crown 35.2°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 63.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €922 EUR|Low: €324 EUR|High: €922 EUR|Avg: €463 EUR
Frank Darling
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 8€324 EUR
Retailer 9€327 EUR
Retailer 12€345 EUR
Retailer 10€361 EUR
Retailer 11€386 EUR
Retailer 2€467 EUR
Retailer 3€494 EUR
Retailer 5€519 EUR
Retailer 6€624 EUR
Retailer 7€665 EUR
Retailer 4€709 EUR
Frank Darling€922 EUR

13 data points across 12 retailers

9 retailers€324 EUR to €922 EUR

A
Cheapest Retailer
-
€324 EUR
A
Retailer 2
-
€327 EUR
View
A
Retailer 3
-
€361 EUR
View
A
Retailer 4
-
€467 EUR
View
B+
Retailer 5
-
€519 EUR
View
Retailer 6
-
€600 EUR
View
Price last confirmed 38 days ago
B+
Retailer 7
-
€624 EUR
View
B+
Retailer 8
-
€665 EUR
View
Most Expensive
B
Frank Darling
100197152230BD · Nov 6
€922 EUR
$1,030 USD
View
8 more retailers have this diamond
Prices start from €324 EURSave up to €598 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.

A
1.21ct Marquise
€324 EUR