Radiant|Lab Grown|IGI

1.21ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG744515220

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

Certificate IGI LG744515220

Diamond specifications and retailer prices

From $589 USD
HK$4,600 HKD
As of October 31, 2026
Save $1,871 USD (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,460 USD 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG744515220 or 744515220. Listed at 13 retailers as of October 30, 2026, with prices from $589 to $2,460, a $1,871 spread on the same certified stone. Brilliant Earth lists it at $2,460. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744515220
Dimensions7.82 × 5.25 × 3.41 mm
L/W Ratio1.49
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
7.82 mm5.25 mm1.21 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744515220
Side View
Table 61.0%Crown 40.5°Girdle: MediumPavilion 33.9°Culet: NoneDepth 65.0%

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 31
Current: $2,460 USD|Low: $572 USD|High: $3,210 USD|Avg: $1,286 USD|-23.4%
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
October 31, 2026
Retailer 5$589 USD
Retailer 12$617 USD
Retailer 3$625 USD
Retailer 10$646 USD
Retailer 2$716 USD
Retailer 7$759 USD
Retailer 6$796 USD
Retailer 11$1,012 USD
Retailer 13$1,578 USD
Retailer 4$1,686 USD
Retailer 8$1,728 USD
Retailer 9$2,340 USD
Brilliant Earth$2,460 USD

43 data points across 13 retailers

13 retailers$589 USD to $2,460 USD

A
Cheapest Retailer
-
$589 USD
HK$4,600 HKD
A
Retailer 2
-
$617 USD
View
A
Retailer 3
-
$625 USD
View
A
Retailer 4
-
$646 USD
View
A
Retailer 5
-
$716 USD
€682 EUR
View
B+
Retailer 6
-
$759 USD
ZAR 12,266 ZAR
View
B+
Retailer 7
-
$796 USD
£626 GBP
View
B+
Retailer 8
-
$1,012 USD
View
B+
Retailer 9
-
$1,578 USD
View
B
Retailer 10
-
$1,686 USD
SGD 2,279 SGD
View
B
Retailer 11
-
$1,728 USD
£1,361 GBP
View
Retailer 12
-
$2,340 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
17457238Y · Oct 30
$2,460 USD
View
12 more retailers have this diamond
Prices start from $589 USDSave up to $1,871 USD

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
$589 USD