Radiant|Lab Grown|IGI

1.21ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG763641994

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

Certificate IGI LG763641994

Diamond specifications and retailer prices

From $378 USD
As of October 30, 2026
Save $1,802 USD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,340 USD at Rare Carat · As of October 18, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG763641994 or 763641994. Listed at 13 retailers as of October 30, 2026, with a 477% 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
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG763641994
Dimensions7.33 × 5.47 × 3.58 mm
L/W Ratio1.34
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
7.33 mm5.47 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG763641994
Side View
Table 64.0%Crown 40.5°Girdle: Slightly ThickPavilion 36.7°Culet: NoneDepth 65.4%

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: $2,340 USD|Low: $270 USD|High: $3,210 USD|Avg: $1,426 USD|+6.2%
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
October 30, 2026
Retailer 15$378 USD
Retailer 12$479 USD
Retailer 9$522 USD
Retailer 3$818 USD
Retailer 11$909 USD
Retailer 14$980 USD
Retailer 5$1,048 USD
Retailer 6$1,048 USD
Retailer 13$1,057 USD
Retailer 8$1,253 USD
Retailer 2$1,900 USD
Retailer 7$2,126 USD
Retailer 10$2,180 USD
Rare Carat$2,340 USD
Retailer 4$2,596 USD

28 data points across 15 retailers

13 retailers$378 USD to $2,180 USD

Retailer 1
-
$302 USD
Price last confirmed 26 days ago
Retailer 2
-
$365 USD
View
Price last confirmed 33 days ago
A
Retailer 3
-
$378 USD
View
Final sale: no returns
A
Retailer 4
-
$479 USD
View
A
Retailer 5
-
$522 USD
View
B+
Retailer 6
-
$909 USD
View
Retailer 7
-
$979 USD
View
Price last confirmed 25 days ago
B+
Retailer 8
-
$1,057 USD
View
B+
Retailer 9
-
$1,253 USD
£987 GBP
View
Retailer 10
-
$1,386 USD
View
Price last confirmed 26 days ago
B
Retailer 11
-
$1,900 USD
View
B
Retailer 12
-
$2,180 USD
View
Most Expensive
Rare Carat
VL-128528 · Oct 18
$2,340 USD
View
Price last confirmed 12 days ago
12 more retailers have this diamond
Prices start from $378 USDSave up to $1,802 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
$378 USD