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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 $445 CAD
$318 USD
As of October 28, 2026
Save $2,816 CAD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,261 CAD at Brilliant Earth · As of October 28, 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 13 retailers as of October 28, 2026, with prices from $445 to $3,261, a $2,816 spread on the same certified stone. Brilliant Earth lists it at $3,261. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $452 CAD|Low: $441 CAD|High: $1,905 CAD|Avg: $1,074 CAD|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10$445 CAD
Retailer 1$452 CAD
Retailer 4$733 CAD
Retailer 5$808 CAD
Retailer 2$840 CAD
Retailer 11$1,077 CAD
Retailer 6$1,094 CAD
Retailer 12$1,346 CAD
Retailer 8$1,441 CAD
Retailer 7$1,441 CAD
Retailer 9$1,671 CAD
Retailer 3$1,905 CAD

23 data points across 12 retailers

13 retailers$445 CAD to $3,261 CAD

A
Cheapest Retailer
-
$445 CAD
$318 USD
Final sale: no returns
A
Retailer 2
-
$452 CAD
£254 GBP
View
A
Retailer 3
-
$733 CAD
$524 USD
View
A
Retailer 4
-
$808 CAD
£455 GBP
View
B+
Retailer 5
-
$840 CAD
$600 USD
View
B+
Retailer 6
-
$1,077 CAD
A$1,184 AUD
View
B+
Retailer 7
-
$1,094 CAD
$782 USD
View
B+
Retailer 8
-
$1,346 CAD
$962 USD
View
B+
Retailer 9
-
$1,441 CAD
A$1,584 AUD
View
B+
Retailer 10
-
$1,441 CAD
$1,030 USD
View
B+
Retailer 11
-
$1,671 CAD
£940 GBP
View
B
Retailer 12
-
$1,905 CAD
$1,361 USD
View
Most Expensive
B
Brilliant Earth
22340637A · Oct 28
$3,261 CAD
$2,330 USD
View
12 more retailers have this diamond
Prices start from $445 CADSave up to $2,816 CAD

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
$445 CAD