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Heart|Lab Grown|IGI

3.09ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG847656426

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG847656426

Diamond specifications and retailer prices

From £1,081 GBP
As of November 2, 2026
Save £3,335 GBP (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,416 GBP at Taylor and Hart · As of November 3, 2026
View at Taylor and Hart

About this 3.09ct lab-grown heart diamond

This 3.09ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG847656426 or 847656426. Listed at 17 retailers as of November 2, 2026, with prices from £1,081 to £4,416, a £3,335 spread on the same certified stone. Taylor and Hart lists it at £4,416. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.09
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847656426
Dimensions8.85 × 10.12 × 6.01 mm
L/W Ratio1.14
Girdle conditionFaceted
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
8.85 mm10.12 mm3.09 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847656426
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 59.4%

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 2
Current: £1,490 GBP|Low: £1,081 GBP|High: £4,416 GBP|Avg: £2,282 GBP|-0.1%
Retailer 1
Retailer 2
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Retailer 4
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Retailer 6
Retailer 7
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 16
Taylor and Hart
November 3, 2026
Retailer 11£1,081 GBP
Retailer 12£1,177 GBP
Retailer 6£1,211 GBP
Retailer 16£1,254 GBP
Retailer 4£1,383 GBP
Retailer 8£1,473 GBP
Retailer 1£1,490 GBP
Retailer 9£1,771 GBP
Retailer 14£1,978 GBP
Retailer 10£2,277 GBP
Retailer 7£2,306 GBP
Retailer 2£2,352 GBP
Retailer 3£2,833 GBP
Retailer 5£3,382 GBP
Retailer 13£3,583 GBP
Retailer 15£3,865 GBP
Taylor and Hart£4,416 GBP

5 data points across 17 retailers

17 retailers£1,081 GBP to £4,416 GBP

A
Cheapest Retailer
-
£1,081 GBP
A
Retailer 2
-
£1,177 GBP
View
A
Retailer 3
-
£1,211 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,254 GBP
View
A
Retailer 5
-
£1,383 GBP
View
A
Retailer 6
-
£1,473 GBP
View
A
Retailer 7
-
£1,490 GBP
View
A
Retailer 8
-
£1,771 GBP
View
A
Retailer 9
-
£1,978 GBP
View
A
Retailer 10
-
£2,277 GBP
View
A
Retailer 11
-
£2,306 GBP
View
A
Retailer 12
-
£2,352 GBP
View
B+
Retailer 13
-
£2,833 GBP
View
B
Retailer 14
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£3,382 GBP
View
B+
Retailer 15
-
£3,583 GBP
View
B+
Retailer 16
-
£3,865 GBP
View
Most Expensive
B
Taylor and Hart
A9V3RTT · Nov 3
£4,416 GBP
$5,922 USD
View
16 more retailers have this diamond
Prices start from £1,081 GBPSave up to £3,335 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 Heart
£1,081 GBP