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Round|Lab Grown|IGI

3.70ct F SI2 Round Lab Grown Diamond

ID • F/SI2

Diamond specifications and retailer prices

From £1,943 GBP
As of November 5, 2026
Save £861 GBP (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,804 GBP at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 3.7ct lab-grown round diamond

This 3.7ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 2 retailers as of November 5, 2026, with prices from £1,943 to £2,804, a £861 spread on the same certified stone. The Diamond Guys lists it at £2,804. 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

3.70
Carat
F
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions9.83 × 9.87 × 6.16 mm
L/W Ratio1.00
Top View
9.83 mm9.87 mm3.70 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 57.5%CrownGirdle: MediumPavilionCulet: NoneDepth 62.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: £1,943 GBP|Low: £1,943 GBP|High: £4,000 GBP|Avg: £2,909 GBP
Retailer 1
The Diamond Guys
September 4, 2026
Retailer 1£1,943 GBP
The Diamond Guys£2,804 GBP

4 data points across 2 retailers

2 retailers£1,943 GBP to £2,804 GBP

B
Cheapest Retailer
-
£1,943 GBP
Most Expensive
C
The Diamond Guys
1842031864 · Nov 6
£2,804 GBP
$3,774 USD
View
1 more retailer has this diamond
Prices start from £1,943 GBPSave up to £861 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.

B
3.70ct Round
£1,943 GBP