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Round|Lab Grown|IGI

1.21ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG788625368

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788625368

Diamond specifications and retailer prices

From €254 EUR
$284 USD
As of November 1, 2026
Save €1,241 EUR (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,495 EUR at Brilliant Earth · As of October 31, 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 F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG788625368 or 788625368. Listed at 18 retailers as of October 31, 2026, with prices from €254 to €1,495, a €1,241 spread on the same certified stone. Brilliant Earth lists it at €1,495. 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
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788625368
Dimensions6.92 × 6.86 × 4.22 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
6.92 mm6.86 mm1.21 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788625368
Side View
Table 57.0%Crown 33.6°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
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 1
Current: €1,495 EUR|Low: €254 EUR|High: €2,139 EUR|Avg: €712 EUR|-30.1%
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
November 1, 2026
Retailer 14€254 EUR
Retailer 4€264 EUR
Retailer 5€283 EUR
Retailer 13€425 EUR
Retailer 11€467 EUR
Retailer 6€473 EUR
Retailer 12€485 EUR
Retailer 7€508 EUR
Retailer 10€537 EUR
Retailer 8€576 EUR
Retailer 3€868 EUR
Retailer 17€911 EUR
Retailer 9€954 EUR
Retailer 16€991 EUR
Retailer 2€1,132 EUR
Retailer 15€1,352 EUR
Brilliant Earth€1,495 EUR

38 data points across 17 retailers

18 retailers€254 EUR to €1,495 EUR

A
Cheapest Retailer
-
€254 EUR
$284 USD
Final sale: no returns
A
Retailer 2
-
€264 EUR
$295 USD
View
Retailer 3
-
€283 EUR
$316 USD
View
Price last confirmed 7 days ago
Retailer 4
-
€286 EUR
$320 USD
View
Price last confirmed 61 days ago
A
Retailer 5
-
€425 EUR
$475 USD
View
A
Retailer 6
-
€467 EUR
View
A
Retailer 7
-
€473 EUR
$528 USD
View
A
Retailer 8
-
€485 EUR
ZAR 8,760 ZAR
View
B+
Retailer 9
-
€508 EUR
$567 USD
View
B+
Retailer 10
-
€537 EUR
£473 GBP
View
B+
Retailer 11
-
€576 EUR
$643 USD
View
B
Retailer 12
-
€868 EUR
$970 USD
View
B+
Retailer 13
-
€911 EUR
SGD 1,375 SGD
View
B
Retailer 14
-
€954 EUR
$1,066 USD
View
B+
Retailer 15
-
€991 EUR
$1,107 USD
View
B
Retailer 16
-
€1,132 EUR
£996 GBP
View
B
Retailer 17
-
€1,352 EUR
$1,510 USD
View
Most Expensive
B
Brilliant Earth
21419099A · Oct 31
€1,495 EUR
$1,670 USD
View
17 more retailers have this diamond
Prices start from €254 EURSave up to €1,241 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
€254 EUR