Radiant|Lab Grown|IGI

1.21ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG626470487

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

Certificate IGI LG626470487

Diamond specifications and retailer prices

From $209 USD
As of November 4, 2026
Save $1,251 USD (86%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $1,460 USD at Brilliant Earth · As of November 4, 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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG626470487 or 626470487. Listed at 26 retailers as of November 4, 2026, with prices from $209 to $1,460, a $1,251 spread on the same certified stone. Brilliant Earth lists it at $1,460. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626470487
Dimensions7.90 × 5.34 × 3.49 mm
L/W Ratio1.48
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
7.90 mm5.34 mm1.21 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626470487
Side View
Table 64.0%Crown 44.4°Girdle: THN-MEDPavilion 34.4°Culet: NoneDepth 65.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $1,460 USD|Low: $209 USD|High: $2,080 USD|Avg: $701 USD|-29.8%
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
Retailer 14
Retailer 15
Retailer 16
November 5, 2026
Retailer 16$209 USD
Retailer 5$238 USD
Retailer 4$307 USD
Retailer 3$368 USD
Retailer 9$441 USD
Retailer 11$448 USD
Retailer 2$475 USD
Retailer 6$503 USD
Retailer 10$635 USD
Retailer 7$794 USD
Retailer 15$838 USD
Retailer 8$919 USD
Retailer 13$922 USD
Retailer 12$1,041 USD
Retailer 14$1,280 USD
Brilliant Earth$1,460 USD

43 data points across 16 retailers

26 retailers$209 USD to $1,460 USD

A
Cheapest Retailer
-
$209 USD
Retailer 2
-
$209 USD
View
Price last confirmed 28 days ago
Retailer 3
-
$209 USD
View
Price last confirmed 36 days ago
Retailer 4
-
$243 USD
View
Price last confirmed 39 days ago
Retailer 5
-
$256 USD
View
Price last confirmed 37 days ago
Retailer 6
-
$260 USD
View
Price last confirmed 33 days ago
A
Retailer 7
-
$307 USD
View
A
Retailer 8
-
$368 USD
View
A
Retailer 9
-
$441 USD
View
A
Retailer 10
-
$448 USD
View
A
Retailer 11
-
$475 USD
View
A
Retailer 12
-
$503 USD
View
A
Retailer 13
-
$559 USD
View
A
Retailer 14
-
$635 USD
View
B+
Retailer 15
-
$794 USD
View
B+
Retailer 16
-
$835 USD
View
Retailer 17
-
$835 USD
View
Price last confirmed 26 days ago
Retailer 18
-
$835 USD
View
Price last confirmed 36 days ago
B+
Retailer 19
-
$838 USD
View
B+
Retailer 20
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$883 USD
View
B+
Retailer 21
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$888 USD
View
Retailer 22
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$922 USD
View
Price last confirmed 7 days ago
B+
Retailer 23
-
$938 USD
View
B+
Retailer 24
-
$1,041 USD
View
Retailer 25
-
$1,280 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
9670732A · Nov 4
$1,460 USD
View
25 more retailers have this diamond
Prices start from $209 USDSave up to $1,251 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
$209 USD