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Marquise|Lab Grown|IGI

1.21ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG681583490

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG681583490

Diamond specifications and retailer prices

From €365 EUR
$408 USD
As of October 30, 2026
Save €1,443 EUR (80%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €1,808 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG681583490 or 681583490. Listed at 22 retailers as of October 30, 2026, with prices from €365 to €1,808, a €1,443 spread on the same certified stone. Brilliant Earth lists it at €1,808. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681583490
Dimensions10.98 × 5.56 × 3.46 mm
L/W Ratio1.97
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
10.98 mm5.56 mm1.21 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681583490
Side View
Table 57.0%Crown 33.2°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 62.2%

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: €1,808 EUR|Low: €365 EUR|High: €2,294 EUR|Avg: €997 EUR|-1.5%
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 22
October 31, 2026
Retailer 15€365 EUR
Retailer 10€408 EUR
Retailer 5€409 EUR
Retailer 4€453 EUR
Retailer 21€453 EUR
Retailer 6€493 EUR
Retailer 16€586 EUR
Retailer 9€659 EUR
Retailer 11€718 EUR
Retailer 17€722 EUR
Retailer 2€745 EUR
Retailer 3€753 EUR
Retailer 13€779 EUR
Retailer 22€1,272 EUR
Retailer 7€1,323 EUR
Retailer 14€1,442 EUR
Retailer 19€1,450 EUR
Retailer 20€1,457 EUR
Retailer 8€1,489 EUR
Retailer 12€1,664 EUR
Retailer 18€1,773 EUR
Brilliant Earth€1,808 EUR

39 data points across 22 retailers

22 retailers€365 EUR to €1,808 EUR

A
Cheapest Retailer
-
€365 EUR
$408 USD
A
Retailer 2
-
€408 EUR
$456 USD
View
Final sale: no returns
A
Retailer 3
-
€409 EUR
$457 USD
View
A
Retailer 4
-
€453 EUR
$506 USD
View
A
Retailer 5
-
€453 EUR
$506 USD
View
A
Retailer 6
-
€493 EUR
HK$4,300 HKD
View
A
Retailer 7
-
€586 EUR
$655 USD
View
A
Retailer 8
-
€659 EUR
$736 USD
View
B+
Retailer 9
-
€718 EUR
$802 USD
View
B+
Retailer 10
-
€722 EUR
View
B+
Retailer 11
-
€745 EUR
£656 GBP
View
B+
Retailer 12
-
€753 EUR
$841 USD
View
B+
Retailer 13
-
€779 EUR
ZAR 14,060 ZAR
View
B
Retailer 14
-
€1,272 EUR
$1,421 USD
View
B
Retailer 15
-
€1,323 EUR
£1,164 GBP
View
B
Retailer 16
-
€1,442 EUR
SGD 2,177 SGD
View
B+
Retailer 17
-
€1,450 EUR
$1,620 USD
View
B
Retailer 18
-
€1,457 EUR
$1,628 USD
View
B
Retailer 19
-
€1,489 EUR
$1,663 USD
View
B
Retailer 20
-
€1,664 EUR
$1,859 USD
View
B
Retailer 21
-
€1,773 EUR
£1,560 GBP
View
Most Expensive
B
Brilliant Earth
19056507A · Oct 30
€1,808 EUR
$2,020 USD
View
21 more retailers have this diamond
Prices start from €365 EURSave up to €1,443 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 Marquise
€365 EUR