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Round|Lab Grown|IGI

3.09ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG727503722

Shape and cutting style on the report: Round brilliant

Certificate IGI LG727503722

Diamond specifications and retailer prices

From £413 GBP
As of November 3, 2026
Save £3,424 GBP (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,837 GBP at Rare Carat · As of November 4, 2026
View at Rare Carat

About this 3.09ct lab-grown round diamond

This 3.09ct 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 LG727503722 or 727503722. Listed at 20 retailers as of November 3, 2026, with prices from £413 to £3,837, a £3,424 spread on the same certified stone. Rare Carat lists it at £3,837. 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

3.09
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727503722
Dimensions9.46 × 9.40 × 5.71 mm
L/W Ratio1.01
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
9.46 mm9.40 mm3.09 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727503722
Side View
Table 57.0%Crown 33.6°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
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 3
Current: £3,837 GBP|Low: £413 GBP|High: £4,078 GBP|Avg: £1,191 GBP|-5.9%
Rare Carat
Retailer 2
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Retailer 20
November 5, 2026
Retailer 10£413 GBP
Retailer 7£461 GBP
Retailer 6£462 GBP
Retailer 11£512 GBP
Retailer 12£512 GBP
Retailer 14£568 GBP
Retailer 16£611 GBP
Retailer 18£704 GBP
Retailer 3£718 GBP
Retailer 13£787 GBP
Retailer 17£1,080 GBP
Retailer 15£1,110 GBP
Retailer 19£1,320 GBP
Retailer 20£1,345 GBP
Retailer 5£1,590 GBP
Retailer 8£1,647 GBP
Retailer 9£1,659 GBP
Retailer 4£1,727 GBP
Retailer 2£2,214 GBP
Rare Carat£3,837 GBP

36 data points across 20 retailers

20 retailers£413 GBP to £3,837 GBP

A
Cheapest Retailer
-
£413 GBP
A
Retailer 2
-
£461 GBP
View
Final sale: no returns
A
Retailer 3
-
£462 GBP
View
Retailer 4
-
£512 GBP
View
Price last confirmed 20 days ago
A
Retailer 5
-
£512 GBP
View
A
Retailer 6
-
£568 GBP
View
A
Retailer 7
-
£611 GBP
View
A
Retailer 8
-
£704 GBP
View
A
Retailer 9
-
£718 GBP
View
A
Retailer 10
-
£787 GBP
View
A
Retailer 11
-
£1,080 GBP
View
A
Retailer 12
-
£1,110 GBP
View
B+
Retailer 13
-
£1,320 GBP
View
A
Retailer 14
-
£1,345 GBP
View
B+
Retailer 15
-
£1,590 GBP
View
B+
Retailer 16
-
£1,647 GBP
View
B+
Retailer 17
-
£1,659 GBP
View
B+
Retailer 18
-
£1,727 GBP
View
B+
Retailer 19
-
£2,214 GBP
View
Most Expensive
B
Rare Carat
SS17293_l_727503722 · Nov 4
£3,837 GBP
$5,180 USD
View
19 more retailers have this diamond
Prices start from £413 GBPSave up to £3,424 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
3.09ct Round
£413 GBP