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Marquise|Lab Grown|IGI

6.11ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1

Diamond specifications and retailer prices

From €1,194 EUR
£1,055 GBP
As of November 2, 2026
Save €2,613 EUR (69%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €3,808 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 6.11ct lab-grown marquise diamond

This 6.11ct 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. Listed at 2 retailers as of October 31, 2026, with prices from €1,194 to €3,808, a €2,613 spread on the same certified stone. Blue Nile lists it at €3,808. 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

6.11
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions19.61 × 9.65 × 5.82 mm
L/W Ratio2.03
Top View
19.61 mm9.65 mm6.11 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €3,808 EUR|Low: €857 EUR|High: €3,808 EUR|Avg: €1,872 EUR
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 4€857 EUR
Retailer 5€933 EUR
Retailer 2€1,194 EUR
Retailer 3€2,057 EUR
Blue Nile€3,808 EUR

5 data points across 5 retailers

2 retailers€1,194 EUR to €3,808 EUR

B+
Cheapest Retailer
-
€1,194 EUR
£1,055 GBP
Most Expensive
B
Blue Nile
26529124 · Oct 31
€3,808 EUR
$4,271 USD
View
1 more retailer has this diamond
Prices start from €1,194 EURSave up to €2,613 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.

B+
6.11ct Marquise
€1,194 EUR