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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG781617863

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781617863

Diamond specifications and retailer prices

From €352 EUR
$393 USD
As of October 29, 2026
Save €2,074 EUR (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €2,426 EUR at Brilliant Earth · As of October 31, 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 LG781617863 or 781617863. Listed at 22 retailers as of October 29, 2026, with prices from €352 to €2,426, a €2,074 spread on the same certified stone. Brilliant Earth lists it at €2,426. 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 angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781617863
Dimensions6.82 × 6.88 × 4.23 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
6.82 mm6.88 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781617863
Side View
Table 56.0%Crown 35.2°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.7%

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 29
Current: €2,426 EUR|Low: €338 EUR|High: €2,426 EUR|Avg: €857 EUR
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
October 31, 2026
Retailer 13€352 EUR
Retailer 4€394 EUR
Retailer 6€394 EUR
Retailer 14€437 EUR
Retailer 11€568 EUR
Retailer 7€586 EUR
Retailer 3€644 EUR
Retailer 8€714 EUR
Retailer 10€750 EUR
Retailer 2€763 EUR
Retailer 12€1,049 EUR
Retailer 15€1,390 EUR
Retailer 5€1,404 EUR
Retailer 9€1,715 EUR
Brilliant Earth€2,426 EUR

43 data points across 15 retailers

22 retailers€352 EUR to €2,426 EUR

A
Cheapest Retailer
-
€352 EUR
$393 USD
A
Retailer 2
-
€394 EUR
$440 USD
View
Final sale: no returns
A
Retailer 3
-
€394 EUR
$440 USD
View
A
Retailer 4
-
€437 EUR
$488 USD
View
A
Retailer 5
-
€437 EUR
$488 USD
View
A
Retailer 6
-
€481 EUR
HK$4,200 HKD
View
A
Retailer 7
-
€568 EUR
$635 USD
View
B+
Retailer 8
-
€586 EUR
$655 USD
View
B+
Retailer 9
-
€644 EUR
$719 USD
View
B+
Retailer 10
-
€680 EUR
$760 USD
View
B+
Retailer 11
-
€714 EUR
£628 GBP
View
B+
Retailer 12
-
€750 EUR
ZAR 13,540 ZAR
View
B+
Retailer 13
-
€763 EUR
View
B
Retailer 14
-
€1,049 EUR
$1,172 USD
View
B
Retailer 15
-
€1,390 EUR
SGD 2,098 SGD
View
B
Retailer 16
-
€1,404 EUR
$1,568 USD
View
Retailer 17
-
€1,433 EUR
$1,601 USD
View
Price last confirmed 83 days ago
B
Retailer 18
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€1,436 EUR
$1,604 USD
View
B
Retailer 19
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€1,599 EUR
$1,786 USD
View
B
Retailer 20
-
€1,621 EUR
$1,810 USD
View
B
Retailer 21
-
€1,715 EUR
£1,509 GBP
View
Most Expensive
B
Brilliant Earth
19001902A · Oct 31
€2,426 EUR
$2,710 USD
View
21 more retailers have this diamond
Prices start from €352 EURSave up to €2,074 EUR

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
€352 EUR