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Round|Lab Grown|IGI

1.21ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG811638127

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811638127

Diamond specifications and retailer prices

From €230 EUR
$257 USD
As of October 29, 2026
Save €1,318 EUR (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €1,549 EUR at Brilliant Earth · As of October 29, 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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811638127 or 811638127. Listed at 20 retailers as of October 29, 2026, with prices from €230 to €1,549, a €1,318 spread on the same certified stone. Brilliant Earth lists it at €1,549. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638127
Dimensions6.87 × 6.84 × 4.20 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.87 mm6.84 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638127
Side View
Table 57.0%Crown 34.1°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.3%

Caratlytics Score

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A+
Exceptional
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: Oct 29
Current: €1,549 EUR|Low: €226 EUR|High: €1,549 EUR|Avg: €678 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 8€230 EUR
Retailer 15€257 EUR
Retailer 4€267 EUR
Retailer 5€286 EUR
Retailer 10€286 EUR
Retailer 3€443 EUR
Retailer 12€472 EUR
Retailer 6€477 EUR
Retailer 13€490 EUR
Retailer 2€543 EUR
Retailer 7€590 EUR
Retailer 19€876 EUR
Retailer 18€916 EUR
Retailer 11€917 EUR
Retailer 9€963 EUR
Retailer 17€999 EUR
Retailer 14€1,145 EUR
Retailer 16€1,352 EUR
Brilliant Earth€1,549 EUR

38 data points across 19 retailers

20 retailers€230 EUR to €1,549 EUR

A+
Cheapest Retailer
-
€230 EUR
$257 USD
A
Retailer 2
-
€257 EUR
$287 USD
View
Final sale: no returns
A
Retailer 3
-
€267 EUR
$298 USD
View
A
Retailer 4
-
€286 EUR
$319 USD
View
A
Retailer 5
-
€286 EUR
$319 USD
View
Retailer 6
-
€289 EUR
$323 USD
View
Price last confirmed 59 days ago
A
Retailer 7
-
€443 EUR
$495 USD
View
A
Retailer 8
-
€472 EUR
View
A
Retailer 9
-
€477 EUR
$533 USD
View
A
Retailer 10
-
€490 EUR
ZAR 8,845 ZAR
View
A
Retailer 11
-
€543 EUR
£478 GBP
View
B+
Retailer 12
-
€590 EUR
$659 USD
View
B+
Retailer 13
-
€876 EUR
$979 USD
View
B+
Retailer 14
-
€916 EUR
SGD 1,383 SGD
View
B+
Retailer 15
-
€917 EUR
$1,024 USD
View
B+
Retailer 16
-
€963 EUR
$1,076 USD
View
B+
Retailer 17
-
€999 EUR
$1,116 USD
View
B+
Retailer 18
-
€1,145 EUR
£1,007 GBP
View
Retailer 19
-
€1,352 EUR
$1,510 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
21422382A · Oct 29
€1,549 EUR
$1,730 USD
View
19 more retailers have this diamond
Prices start from €230 EURSave up to €1,318 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
€230 EUR