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Round|Lab Grown|IGI

3.11ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG631466058

Shape and cutting style on the report: Round brilliant

Certificate IGI LG631466058

Diamond specifications and retailer prices

From £592 GBP
As of November 3, 2026
Save £4,853 GBP (89%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £5,785 GBP at Brilliant Earth · As of October 14, 2026
View at Brilliant Earth

About this 3.11ct lab-grown round diamond

This 3.11ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG631466058 or 631466058. Listed at 27 retailers as of November 3, 2026, with a 820% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.11
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631466058
Dimensions9.51 × 9.45 × 5.62 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
9.51 mm9.45 mm3.11 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG631466058
Side View
Table 58.0%Crown 33.2°Girdle: MediumPavilion 40.2°Culet: NoneDepth 59.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: £5,445 GBP|Low: £592 GBP|High: £5,785 GBP|Avg: £1,837 GBP|-5.9%
Brilliant Earth
Retailer 2
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November 5, 2026
Retailer 11£592 GBP
Retailer 5£644 GBP
Retailer 4£663 GBP
Retailer 7£687 GBP
Retailer 17£687 GBP
Retailer 3£819 GBP
Retailer 18£900 GBP
Retailer 8£907 GBP
Retailer 16£1,085 GBP
Retailer 13£1,151 GBP
Retailer 21£1,153 GBP
Retailer 6£1,298 GBP
Retailer 20£1,530 GBP
Retailer 23£1,557 GBP
Retailer 24£1,712 GBP
Retailer 22£1,762 GBP
Retailer 12£2,132 GBP
Retailer 14£2,149 GBP
Retailer 9£2,280 GBP
Retailer 15£2,704 GBP
Retailer 2£2,834 GBP
Retailer 19£3,556 GBP
Retailer 10£5,259 GBP
Brilliant Earth£5,445 GBP

27 data points across 24 retailers

27 retailers£592 GBP to £5,445 GBP

A
Cheapest Retailer
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£592 GBP
A
Retailer 2
-
£644 GBP
View
A
Retailer 3
-
£663 GBP
View
Final sale: no returns
A
Retailer 4
-
£687 GBP
View
Retailer 5
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£687 GBP
View
Price last confirmed 19 days ago
A
Retailer 6
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£819 GBP
View
A
Retailer 7
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£900 GBP
View
A
Retailer 8
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£907 GBP
View
A
Retailer 9
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£1,085 GBP
View
A
Retailer 10
-
£1,151 GBP
View
A
Retailer 11
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£1,153 GBP
View
A
Retailer 12
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£1,298 GBP
View
B+
Retailer 13
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£1,530 GBP
View
B+
Retailer 14
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£1,557 GBP
View
B+
Retailer 15
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£1,712 GBP
View
B+
Retailer 16
-
£1,762 GBP
View
B+
Retailer 17
-
£2,132 GBP
View
B+
Retailer 18
-
£2,149 GBP
View
B+
Retailer 19
-
£2,280 GBP
View
B+
Retailer 20
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£2,704 GBP
View
B+
Retailer 21
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£2,834 GBP
View
Retailer 22
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£3,358 GBP
View
Price last confirmed 28 days ago
B
Retailer 23
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£3,556 GBP
View
B
Retailer 24
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£5,018 GBP
View
B
Retailer 25
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£5,259 GBP
View
B
Retailer 26
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£5,445 GBP
View
Most Expensive
Brilliant Earth
21773776Y · Oct 14
£5,785 GBP
$7,810 USD
View
Price last confirmed 21 days ago
26 more retailers have this diamond
Prices start from £592 GBPSave up to £4,853 GBP

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
3.11ct Round
£592 GBP