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Marquise|Lab Grown|IGI

8.12ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG617474256

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG617474256

Diamond specifications and retailer prices

From €955 EUR
$1,071 USD
As of November 2, 2026
Save €5,081 EUR (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €6,036 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 8.12ct lab-grown marquise diamond

This 8.12ct lab-grown marquise sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG617474256 or 617474256. Listed at 14 retailers as of November 2, 2026, with prices from €955 to €6,036, a €5,081 spread on the same certified stone. Brilliant Earth lists it at €6,036. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

8.12
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617474256
Dimensions20.29 × 10.68 × 6.70 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizePointed
Top View
20.29 mm10.68 mm8.12 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617474256
Side View
Table 58.0%Crown 34.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.7%

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: Nov 2
Current: €6,036 EUR|Low: €810 EUR|High: €6,214 EUR|Avg: €2,353 EUR|-2.9%
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
Retailer 16
November 2, 2026
Retailer 8€939 EUR
Retailer 15€955 EUR
Retailer 4€1,039 EUR
Retailer 3€1,107 EUR
Retailer 10€1,262 EUR
Retailer 14€1,325 EUR
Retailer 6€1,586 EUR
Retailer 2€1,604 EUR
Retailer 11€1,680 EUR
Retailer 5€1,764 EUR
Retailer 16€2,076 EUR
Retailer 12€2,247 EUR
Retailer 9€3,756 EUR
Retailer 13€4,075 EUR
Retailer 7€5,268 EUR
Brilliant Earth€6,036 EUR

38 data points across 16 retailers

14 retailers€955 EUR to €6,036 EUR

A
Cheapest Retailer
-
€955 EUR
$1,071 USD
A
Retailer 2
-
€1,039 EUR
$1,165 USD
View
A
Retailer 3
-
€1,107 EUR
$1,242 USD
View
A
Retailer 4
-
€1,262 EUR
$1,415 USD
View
A
Retailer 5
-
€1,586 EUR
$1,779 USD
View
A
Retailer 6
-
€1,604 EUR
£1,417 GBP
View
A
Retailer 7
-
€1,680 EUR
View
B+
Retailer 8
-
€1,764 EUR
$1,979 USD
View
B+
Retailer 9
-
€2,076 EUR
$2,329 USD
View
B+
Retailer 10
-
€2,247 EUR
$2,520 USD
View
B
Retailer 11
-
€3,756 EUR
£3,317 GBP
View
B
Retailer 12
-
€4,075 EUR
$4,570 USD
View
B
Retailer 13
-
€5,268 EUR
$5,909 USD
View
Most Expensive
B
Brilliant Earth
8971377A · Nov 2
€6,036 EUR
$6,770 USD
View
13 more retailers have this diamond
Prices start from €955 EURSave up to €5,081 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
8.12ct Marquise
€955 EUR