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Radiant|Lab Grown|IGI

3.77ct E VS1 Radiant Lab Grown Diamond

EX • E/VS1 • IGI LG815616329

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG815616329

Diamond specifications and retailer prices

From £658 GBP
$882 USD
As of October 29, 2026
Save £3,663 GBP (85%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,321 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.77ct lab-grown radiant diamond

This 3.77ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG815616329 or 815616329. Listed at 7 retailers as of October 29, 2026, with prices from £658 to £4,321, a £3,663 spread on the same certified stone. Brilliant Earth lists it at £4,321. 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

3.77
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.8°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815616329
Dimensions10.55 × 7.81 × 5.30 mm
L/W Ratio1.35
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.55 mm7.81 mm3.77 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815616329
Side View
Table 67.0%Crown 45.8°Girdle: MediumPavilion 36.4°Culet: NoneDepth 67.9%

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: Oct 29
Current: £4,321 GBP|Low: £293 GBP|High: £4,321 GBP|Avg: £1,274 GBP|+3.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 9£407 GBP
Retailer 6£658 GBP
Retailer 8£725 GBP
Retailer 3£744 GBP
Retailer 7£809 GBP
Retailer 4£1,059 GBP
Retailer 5£1,399 GBP
Retailer 10£1,485 GBP
Retailer 2£3,286 GBP
Brilliant Earth£4,321 GBP

14 data points across 10 retailers

7 retailers£658 GBP to £4,321 GBP

A
Cheapest Retailer
-
£658 GBP
$882 USD
B+
Retailer 2
-
£744 GBP
$997 USD
View
A
Retailer 3
-
£809 GBP
€1,032 EUR
View
A
Retailer 4
-
£1,059 GBP
$1,419 USD
View
B+
Retailer 5
-
£1,399 GBP
$1,874 USD
View
B
Retailer 6
-
£3,286 GBP
$4,403 USD
View
Most Expensive
B
Brilliant Earth
22171034A · Oct 29
£4,321 GBP
$5,790 USD
View
6 more retailers have this diamond
Prices start from £658 GBPSave up to £3,663 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
3.77ct Radiant
£658 GBP