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Round|Lab Grown|IGI

3.15ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG799636878

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799636878

Diamond specifications and retailer prices

From £850 GBP
$1,141 USD
As of November 1, 2026
Save £6,699 GBP (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,549 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 3.15ct lab-grown round diamond

This 3.15ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799636878 or 799636878. Listed at 12 retailers as of November 1, 2026, with prices from £850 to £7,549, a £6,699 spread on the same certified stone. Do Amore Diamonds lists it at £7,549. 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

3.15
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799636878
Dimensions9.43 × 9.37 × 5.83 mm
L/W Ratio1.01
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
9.43 mm9.37 mm3.15 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799636878
Side View
Table 56.0%Crown 34.5°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.1%

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 1
Current: £7,549 GBP|Low: £850 GBP|High: £10,194 GBP|Avg: £3,230 GBP|-7.3%
Do Amore Diamonds
Retailer 2
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Retailer 11
Retailer 12
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Retailer 17
November 1, 2026
Retailer 14£850 GBP
Retailer 17£925 GBP
Retailer 10£1,295 GBP
Retailer 15£1,568 GBP
Retailer 11£1,569 GBP
Retailer 12£1,943 GBP
Retailer 5£1,970 GBP
Retailer 16£2,040 GBP
Retailer 7£2,078 GBP
Retailer 3£2,699 GBP
Retailer 8£2,971 GBP
Retailer 2£3,498 GBP
Retailer 6£3,590 GBP
Retailer 4£4,747 GBP
Retailer 9£4,993 GBP
Retailer 13£5,984 GBP
Do Amore Diamonds£7,549 GBP

26 data points across 17 retailers

12 retailers£850 GBP to £7,549 GBP

A
Cheapest Retailer
-
£850 GBP
$1,141 USD
A
Retailer 2
-
£925 GBP
$1,241 USD
View
A
Retailer 3
-
£1,295 GBP
View
A
Retailer 4
-
£1,568 GBP
$2,104 USD
View
B+
Retailer 5
-
£1,569 GBP
$2,105 USD
View
B+
Retailer 6
-
£1,943 GBP
$2,608 USD
View
B+
Retailer 7
-
£2,040 GBP
$2,738 USD
View
B+
Retailer 8
-
£2,699 GBP
$3,623 USD
View
B+
Retailer 9
-
£3,498 GBP
View
B
Retailer 10
-
£4,747 GBP
$6,370 USD
View
B
Retailer 11
-
£5,984 GBP
$8,030 USD
View
Most Expensive
B
Do Amore Diamonds
27-4D74D3F7F · Nov 2
£7,549 GBP
$10,130 USD
View
11 more retailers have this diamond
Prices start from £850 GBPSave up to £6,699 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
3.15ct Round
£850 GBP