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Marquise|Lab Grown|IGI

1.21ct F IF Marquise Lab Grown Diamond

ID • F/IF • IGI LG786675964

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG786675964

Diamond specifications and retailer prices

From €246 EUR
$276 USD
As of October 30, 2026
Save €1,332 EUR (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,578 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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG786675964 or 786675964. Listed at 16 retailers as of October 30, 2026, with prices from €246 to €1,578, a €1,332 spread on the same certified stone. Brilliant Earth lists it at €1,578. 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 angle35.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786675964
Dimensions11.19 × 5.56 × 3.40 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.19 mm5.56 mm1.21 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786675964
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 61.2%

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: €519 EUR|Low: €246 EUR|High: €1,146 EUR|Avg: €651 EUR|-1.5%
Retailer 1
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
October 31, 2026
Retailer 11€246 EUR
Retailer 10€367 EUR
Retailer 5€419 EUR
Retailer 4€469 EUR
Retailer 2€506 EUR
Retailer 1€519 EUR
Retailer 9€552 EUR
Retailer 3€668 EUR
Retailer 14€720 EUR
Retailer 13€881 EUR
Retailer 7€882 EUR
Retailer 12€925 EUR
Retailer 8€956 EUR
Retailer 6€1,121 EUR

26 data points across 14 retailers

16 retailers€246 EUR to €1,578 EUR

A
Cheapest Retailer
-
€246 EUR
$276 USD
Final sale: no returns
A
Retailer 2
-
€367 EUR
$412 USD
View
Retailer 3
-
€419 EUR
$470 USD
View
Price last confirmed 9 days ago
Retailer 4
-
€469 EUR
ZAR 8,498 ZAR
View
Price last confirmed 10 days ago
A
Retailer 5
-
€506 EUR
View
A
Retailer 6
-
€519 EUR
£459 GBP
View
A
Retailer 7
-
€552 EUR
$619 USD
View
B+
Retailer 8
-
€668 EUR
A$1,152 AUD
View
B+
Retailer 9
-
€720 EUR
$807 USD
View
B+
Retailer 10
-
€881 EUR
SGD 1,336 SGD
View
B+
Retailer 11
-
€882 EUR
$989 USD
View
B+
Retailer 12
-
€925 EUR
$1,037 USD
View
B+
Retailer 13
-
€956 EUR
$1,072 USD
View
Retailer 14
-
€994 EUR
A$1,716 AUD
View
Price last confirmed 28 days ago
Retailer 15
-
€1,121 EUR
£990 GBP
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
18735861A · Oct 30
€1,578 EUR
$1,770 USD
View
15 more retailers have this diamond
Prices start from €246 EURSave up to €1,332 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
€246 EUR