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 €270 EUR
$302 USD
As of October 30, 2026
Save €1,672 EUR (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €2,059 EUR 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
Colour
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: €2,059 EUR|Low: €258 EUR|High: €2,363 EUR|Avg: €959 EUR|-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€270 EUR
Retailer 10€305 EUR
Retailer 8€392 EUR
Retailer 4€430 EUR
Retailer 16€479 EUR
Retailer 13€493 EUR
Retailer 5€536 EUR
Retailer 11€548 EUR
Retailer 3€706 EUR
Retailer 15€882 EUR
Retailer 17€969 EUR
Retailer 7€1,056 EUR
Retailer 12€1,157 EUR
Retailer 6€1,175 EUR
Retailer 9€1,528 EUR
Retailer 2€1,942 EUR
Rare Carat€2,059 EUR

29 data points across 17 retailers

20 retailers€270 EUR to €1,942 EUR

A
Cheapest Retailer
-
€270 EUR
$302 USD
Final sale: no returns
Retailer 2
-
€303 EUR
$339 USD
View
Price last confirmed 29 days ago
A
Retailer 3
-
€305 EUR
£268 GBP
View
Retailer 4
-
€367 EUR
$410 USD
View
Price last confirmed 33 days ago
Retailer 5
-
€392 EUR
$438 USD
View
Price last confirmed 28 days ago
A
Retailer 6
-
€430 EUR
$480 USD
View
A
Retailer 7
-
€479 EUR
$535 USD
View
A
Retailer 8
-
€493 EUR
ZAR 8,903 ZAR
View
Retailer 9
-
€536 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
-
€548 EUR
£482 GBP
View
B+
Retailer 11
-
€706 EUR
$789 USD
View
B+
Retailer 12
-
€882 EUR
$985 USD
View
B+
Retailer 13
-
€969 EUR
$1,082 USD
View
B+
Retailer 14
-
€1,056 EUR
SGD 1,595 SGD
View
B
Retailer 15
-
€1,157 EUR
£1,018 GBP
View
B
Retailer 16
-
€1,175 EUR
$1,313 USD
View
Retailer 17
-
€1,260 EUR
$1,408 USD
View
Price last confirmed 30 days ago
Retailer 18
-
€1,528 EUR
£1,344 GBP
View
Price last confirmed 26 days ago
B
Retailer 19
-
€1,942 EUR
$2,170 USD
View
Most Expensive
Rare Carat
PD-231298 · Oct 21
€2,059 EUR
$2,300 USD
View
Price last confirmed 10 days ago
19 more retailers have this diamond
Prices start from €270 EURSave up to €1,672 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
€270 EUR