Radiant|Lab Grown|IGI

1.21ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG816616105

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

Certificate IGI LG816616105

Diamond specifications and retailer prices

From $422 CAD
$302 USD
As of October 30, 2026
Save $2,609 CAD (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,213 CAD at Rare Carat · As of October 21, 2026
View at Rare Carat

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816616105 or 816616105. Listed at 20 retailers as of October 30, 2026, with a 619% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816616105
Dimensions7.68 × 5.29 × 3.48 mm
L/W Ratio1.45
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
7.68 mm5.29 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816616105
Side View
Table 61.0%Crown 40.1°Girdle: MediumPavilion 34.5°Culet: NoneDepth 65.8%

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: Oct 30
Current: $3,213 CAD|Low: $402 CAD|High: $3,688 CAD|Avg: $1,497 CAD|-1.7%
Rare Carat
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
October 30, 2026
Retailer 14$422 CAD
Retailer 10$475 CAD
Retailer 8$612 CAD
Retailer 4$671 CAD
Retailer 16$747 CAD
Retailer 13$770 CAD
Retailer 5$836 CAD
Retailer 11$856 CAD
Retailer 3$1,102 CAD
Retailer 15$1,376 CAD
Retailer 17$1,512 CAD
Retailer 7$1,649 CAD
Retailer 12$1,806 CAD
Retailer 6$1,834 CAD
Retailer 9$2,384 CAD
Retailer 2$3,031 CAD
Rare Carat$3,213 CAD

29 data points across 17 retailers

20 retailers$422 CAD to $3,031 CAD

A
Cheapest Retailer
-
$422 CAD
$302 USD
Final sale: no returns
Retailer 2
-
$474 CAD
$339 USD
View
Price last confirmed 28 days ago
A
Retailer 3
-
$475 CAD
£268 GBP
View
Retailer 4
-
$573 CAD
$410 USD
View
Price last confirmed 33 days ago
Retailer 5
-
$612 CAD
$438 USD
View
Price last confirmed 27 days ago
A
Retailer 6
-
$671 CAD
$480 USD
View
A
Retailer 7
-
$747 CAD
$535 USD
View
A
Retailer 8
-
$770 CAD
ZAR 8,903 ZAR
View
Retailer 9
-
$836 CAD
€570 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
-
$856 CAD
£482 GBP
View
B+
Retailer 11
-
$1,102 CAD
$789 USD
View
B+
Retailer 12
-
$1,376 CAD
$985 USD
View
B+
Retailer 13
-
$1,512 CAD
$1,082 USD
View
B+
Retailer 14
-
$1,649 CAD
SGD 1,595 SGD
View
B
Retailer 15
-
$1,806 CAD
£1,018 GBP
View
B
Retailer 16
-
$1,834 CAD
$1,313 USD
View
Retailer 17
-
$1,967 CAD
$1,408 USD
View
Price last confirmed 30 days ago
Retailer 18
-
$2,384 CAD
£1,344 GBP
View
Price last confirmed 26 days ago
B
Retailer 19
-
$3,031 CAD
$2,170 USD
View
Most Expensive
Rare Carat
PD-231298 · Oct 21
$3,213 CAD
$2,300 USD
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from $422 CADSave up to $2,609 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
$422 CAD