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Radiant|Lab Grown|IGI

1.21ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG840640263

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG840640263

Diamond specifications and retailer prices

From €255 EUR
$285 USD
As of October 31, 2026
Save €1,830 EUR (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €2,086 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG840640263 or 840640263. Listed at 14 retailers as of October 30, 2026, with prices from €255 to €2,086, a €1,830 spread on the same certified stone. Brilliant Earth lists it at €2,086. 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
E
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.5°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840640263
Dimensions7.23 × 5.19 × 3.53 mm
L/W Ratio1.39
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
7.23 mm5.19 mm1.21 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840640263
Side View
Table 61.0%Crown 48.5°Girdle: STK-THKPavilion 34.4°Culet: NoneDepth 68.0%

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: Oct 31
Current: €255 EUR|Low: €255 EUR|High: €1,218 EUR|Avg: €686 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 1€255 EUR
Retailer 12€289 EUR
Retailer 10€294 EUR
Retailer 9€457 EUR
Retailer 6€517 EUR
Retailer 5€537 EUR
Retailer 4€689 EUR
Retailer 8€702 EUR
Retailer 7€878 EUR
Retailer 2€922 EUR
Retailer 13€922 EUR
Retailer 3€1,069 EUR
Retailer 11€1,198 EUR

24 data points across 13 retailers

14 retailers€255 EUR to €2,086 EUR

A
Cheapest Retailer
-
€255 EUR
$285 USD
A
Retailer 2
-
€289 EUR
£254 GBP
View
A
Retailer 3
-
€294 EUR
$328 USD
View
Final sale: no returns
A
Retailer 4
-
€457 EUR
$511 USD
View
A
Retailer 5
-
€517 EUR
£455 GBP
View
B+
Retailer 6
-
€537 EUR
$600 USD
View
B+
Retailer 7
-
€689 EUR
A$1,184 AUD
View
B+
Retailer 8
-
€702 EUR
$784 USD
View
B
Retailer 9
-
€878 EUR
$981 USD
View
B+
Retailer 10
-
€922 EUR
A$1,584 AUD
View
B+
Retailer 11
-
€922 EUR
$1,030 USD
View
B+
Retailer 12
-
€1,069 EUR
£940 GBP
View
B
Retailer 13
-
€1,198 EUR
$1,338 USD
View
Most Expensive
B
Brilliant Earth
22340637A · Oct 30
€2,086 EUR
$2,330 USD
View
13 more retailers have this diamond
Prices start from €255 EURSave up to €1,830 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 Radiant
€255 EUR