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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG781617863

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781617863

Diamond specifications and retailer prices

From €349 EUR
As of November 3, 2026
Save €2,056 EUR (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €2,405 EUR at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG781617863 or 781617863. Listed at 23 retailers as of November 3, 2026, with prices from €349 to €2,405, a €2,056 spread on the same certified stone. Brilliant Earth lists it at €2,405. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781617863
Dimensions6.82 × 6.88 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.82 mm6.88 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781617863
Side View
Table 56.0%Crown 35.2°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.7%

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 3
Current: €2,405 EUR|Low: €335 EUR|High: €2,405 EUR|Avg: €878 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 5, 2026
Retailer 13€349 EUR
Retailer 4€391 EUR
Retailer 6€391 EUR
Retailer 14€433 EUR
Retailer 12€564 EUR
Retailer 7€581 EUR
Retailer 3€638 EUR
Retailer 8€701 EUR
Retailer 11€746 EUR
Retailer 10€757 EUR
Retailer 9€1,214 EUR
Retailer 15€1,377 EUR
Retailer 5€1,392 EUR
Retailer 2€1,685 EUR
Brilliant Earth€2,405 EUR

44 data points across 15 retailers

23 retailers€349 EUR to €2,405 EUR

A
Cheapest Retailer
-
€349 EUR
A
Retailer 2
-
€391 EUR
View
Final sale: no returns
A
Retailer 3
-
€391 EUR
View
Retailer 4
-
€433 EUR
View
Price last confirmed 11 days ago
A
Retailer 5
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€433 EUR
View
A
Retailer 6
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€477 EUR
View
A
Retailer 7
-
€564 EUR
View
B+
Retailer 8
-
€581 EUR
View
B+
Retailer 9
-
€638 EUR
View
B+
Retailer 10
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€675 EUR
View
B+
Retailer 11
-
€701 EUR
View
B+
Retailer 12
-
€746 EUR
View
B+
Retailer 13
-
€757 EUR
View
B+
Retailer 14
-
€1,050 EUR
View
B
Retailer 15
-
€1,214 EUR
View
B
Retailer 16
-
€1,377 EUR
View
B
Retailer 17
-
€1,392 EUR
View
Retailer 18
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€1,420 EUR
View
Price last confirmed 88 days ago
B
Retailer 19
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€1,424 EUR
View
B
Retailer 20
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€1,585 EUR
View
B
Retailer 21
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€1,606 EUR
View
B
Retailer 22
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€1,685 EUR
View
Most Expensive
B
Brilliant Earth
19001902A · Nov 3
€2,405 EUR
$2,710 USD
View
22 more retailers have this diamond
Prices start from €349 EURSave up to €2,056 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 Round
€349 EUR