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Pear|Lab Grown|IGI

3.78ct F SI1 Pear Lab Grown Diamond

ID • F/SI1 • IGI LG649421332

Shape and cutting style on the report: Pear brilliant

Certificate IGI LG649421332

Diamond specifications and retailer prices

From £335 GBP
$449 USD
As of October 27, 2026
Save £3,785 GBP (92%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,120 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 3.78ct lab-grown pear diamond

This 3.78ct lab-grown pear sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG649421332 or 649421332. Listed at 10 retailers as of October 26, 2026, with prices from £335 to £4,120, a £3,785 spread on the same certified stone. Brilliant Earth lists it at £4,120. 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

3.78
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG649421332
Dimensions14.26 × 8.69 × 5.22 mm
L/W Ratio1.64
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.26 mm8.69 mm3.78 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG649421332
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.1%

Caratlytics Score

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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: Oct 27
Current: £4,120 GBP|Low: £335 GBP|High: £4,247 GBP|Avg: £1,641 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 28, 2026
Retailer 11£335 GBP
Retailer 8£375 GBP
Retailer 3£565 GBP
Retailer 9£652 GBP
Retailer 2£653 GBP
Retailer 4£813 GBP
Retailer 7£1,117 GBP
Retailer 12£1,207 GBP
Retailer 13£1,207 GBP
Retailer 6£1,918 GBP
Retailer 10£2,978 GBP
Retailer 5£3,311 GBP
Brilliant Earth£4,120 GBP

18 data points across 13 retailers

10 retailers£335 GBP to £4,120 GBP

A
Cheapest Retailer
-
£335 GBP
$449 USD
A
Retailer 2
-
£375 GBP
$503 USD
View
B+
Retailer 3
-
£652 GBP
$873 USD
View
A
Retailer 4
-
£653 GBP
$875 USD
View
B+
Retailer 5
-
£1,117 GBP
$1,497 USD
View
B+
Retailer 6
-
£1,207 GBP
$1,617 USD
View
B+
Retailer 7
-
£1,207 GBP
$1,617 USD
View
B
Retailer 8
-
£1,918 GBP
View
B
Retailer 9
-
£2,978 GBP
$3,990 USD
View
Most Expensive
B
Brilliant Earth
11630051Y · Oct 26
£4,120 GBP
$5,520 USD
View
9 more retailers have this diamond
Prices start from £335 GBPSave up to £3,785 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
3.78ct Pear
£335 GBP