Oval|Lab Grown|IGI

1.21ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG813651478

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG813651478

Diamond specifications and retailer prices

From $255 USD
As of November 1, 2026
Save $3,235 USD (93%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,490 USD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.21ct lab-grown oval diamond

This 1.21ct lab-grown oval 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 LG813651478 or 813651478. Listed at 24 retailers as of November 1, 2026, with prices from $255 to $3,490, a $3,235 spread on the same certified stone. Brilliant Earth lists it at $3,490. 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 angle31.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813651478
Dimensions8.84 × 5.95 × 3.69 mm
L/W Ratio1.49
Girdle conditionFaceted
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
8.84 mm5.95 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813651478
Side View
Table 58.0%Crown 31.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.0%

Caratlytics Score

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A+
Exceptional
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: Nov 1
Current: $3,490 USD|Low: $255 USD|High: $3,490 USD|Avg: $1,057 USD|+0.9%
Brilliant Earth
Retailer 2
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Retailer 23
November 1, 2026
Retailer 21$255 USD
Retailer 10$286 USD
Retailer 18$296 USD
Retailer 11$317 USD
Retailer 12$317 USD
Retailer 5$423 USD
Retailer 9$459 USD
Retailer 17$475 USD
Retailer 23$550 USD
Retailer 13$601 USD
Retailer 3$602 USD
Retailer 2$612 USD
Retailer 20$973 USD
Retailer 19$1,092 USD
Retailer 4$1,124 USD
Retailer 14$1,290 USD
Retailer 7$1,368 USD
Retailer 8$1,408 USD
Retailer 16$1,410 USD
Retailer 6$2,270 USD
Retailer 15$2,342 USD
Retailer 22$2,575 USD
Brilliant Earth$3,490 USD

35 data points across 23 retailers

24 retailers$255 USD to $3,490 USD

A+
Cheapest Retailer
-
$255 USD
A
Retailer 2
-
$286 USD
View
Final sale: no returns
A
Retailer 3
-
$296 USD
View
Retailer 4
-
$317 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$317 USD
View
A
Retailer 6
-
$423 USD
View
A
Retailer 7
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$459 USD
View
A
Retailer 8
-
$475 USD
View
A
Retailer 9
-
$601 USD
ZAR 9,704 ZAR
View
A
Retailer 10
-
$602 USD
View
A
Retailer 11
-
$612 USD
£482 GBP
View
B+
Retailer 12
-
$973 USD
View
B+
Retailer 13
-
$1,092 USD
View
B+
Retailer 14
-
$1,124 USD
View
B
Retailer 15
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$1,290 USD
View
B
Retailer 16
-
$1,368 USD
View
B
Retailer 17
-
$1,408 USD
£1,109 GBP
View
B
Retailer 18
-
$1,410 USD
View
B
Retailer 19
-
$2,270 USD
View
B
Retailer 20
-
$2,342 USD
View
Retailer 21
-
$2,575 USD
View
Price last confirmed 11 days ago
B
Retailer 22
-
$3,470 USD
View
B
Retailer 23
-
$3,470 USD
View
Most Expensive
B
Brilliant Earth
21803537A · Nov 1
$3,490 USD
View
23 more retailers have this diamond
Prices start from $255 USDSave up to $3,235 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 Oval
$255 USD