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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG788624317

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788624317

Diamond specifications and retailer prices

From $393 USD
As of October 29, 2026
Save $2,317 USD (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,710 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round 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 LG788624317 or 788624317. Listed at 23 retailers as of October 29, 2026, with prices from $393 to $2,710, a $2,317 spread on the same certified stone. Brilliant Earth lists it at $2,710. 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 angle33.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788624317
Dimensions6.84 × 6.89 × 4.21 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.84 mm6.89 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788624317
Side View
Table 55.0%Crown 33.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
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 29
Current: $2,710 USD|Low: $378 USD|High: $2,710 USD|Avg: $1,007 USD
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 29, 2026
Retailer 12$393 USD
Retailer 5$440 USD
Retailer 13$488 USD
Retailer 10$635 USD
Retailer 4$719 USD
Retailer 7$770 USD
Retailer 9$778 USD
Retailer 2$795 USD
Retailer 8$838 USD
Retailer 11$1,172 USD
Retailer 3$1,553 USD
Retailer 6$1,916 USD
Brilliant Earth$2,710 USD

40 data points across 13 retailers

23 retailers$393 USD to $2,710 USD

A
Cheapest Retailer
-
$393 USD
A
Retailer 2
-
$440 USD
View
Final sale: no returns
A
Retailer 3
-
$440 USD
View
A
Retailer 4
-
$488 USD
View
A
Retailer 5
-
$488 USD
View
A
Retailer 6
-
$538 USD
HK$4,200 HKD
View
A
Retailer 7
-
$635 USD
View
A
Retailer 8
-
$655 USD
View
B+
Retailer 9
-
$719 USD
View
B+
Retailer 10
-
$760 USD
View
B+
Retailer 11
-
$770 USD
€733 EUR
View
B+
Retailer 12
-
$778 USD
£612 GBP
View
B+
Retailer 13
-
$795 USD
£626 GBP
View
B+
Retailer 14
-
$838 USD
ZAR 13,540 ZAR
View
B
Retailer 15
-
$1,172 USD
View
B
Retailer 16
-
$1,553 USD
SGD 2,098 SGD
View
B
Retailer 17
-
$1,568 USD
View
Retailer 18
-
$1,601 USD
View
Price last confirmed 81 days ago
B
Retailer 19
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$1,604 USD
View
B
Retailer 20
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$1,786 USD
View
B
Retailer 21
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$1,810 USD
View
B
Retailer 22
-
$1,916 USD
£1,509 GBP
View
Most Expensive
B
Brilliant Earth
19349604A · Oct 29
$2,710 USD
View
22 more retailers have this diamond
Prices start from $393 USDSave up to $2,317 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 Round
$393 USD