Marquise|Lab Grown|IGI

3.77ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG835665856

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG835665856

Diamond specifications and retailer prices

From £392 GBP

$526 USD

As of October 30, 2026

Save £1,981 GBP (83%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £2,373 GBP at Rare Carat · As of October 28, 2026

View at Rare Carat

About this 3.77ct lab-grown marquise diamond

This 3.77ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG835665856 or 835665856. Listed at 15 retailers as of October 28, 2026, with prices from £392 to £2,373, a £1,981 spread on the same certified stone. Rare Carat lists it at £2,373. 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

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.4°

Pavilion angle40.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG835665856

Dimensions17.11 × 8.21 × 4.93 mm

L/W Ratio2.08

Girdle conditionFaceted

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG835665856

Side View

Caratlytics Score

How it works →

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: Oct 30

Current: £2,373 GBP|Low: £382 GBP|High: £2,411 GBP|Avg: £1,356 GBP|-1.5%

Rare Carat

Retailer 2

Retailer 3

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Retailer 6

Retailer 7

Retailer 8

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Retailer 10

Retailer 11

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Retailer 14

October 30, 2026

Retailer 3£392 GBP

Retailer 9£439 GBP

Retailer 12£557 GBP

Retailer 8£736 GBP

Retailer 5£773 GBP

Retailer 2£1,026 GBP

Retailer 11£1,254 GBP

Retailer 10£1,256 GBP

Retailer 4£1,278 GBP

Retailer 13£1,692 GBP

Retailer 6£1,916 GBP

Retailer 7£2,039 GBP

Retailer 14£2,206 GBP

Rare Carat£2,373 GBP

29 data points across 14 retailers

15 retailers£392 GBP to £2,373 GBP

Cheapest Retailer

£392 GBP

$526 USD

Retailer 2

£439 GBP

$589 USD

View

Retailer 3

£557 GBP

View

Price last confirmed 16 days ago

Retailer 4

£736 GBP

€941 EUR

View

Price last confirmed 8 days ago

Retailer 5

£773 GBP

$1,037 USD

View

Retailer 6

£1,026 GBP

A$2,119 AUD

View

Retailer 7

£1,254 GBP

$1,683 USD

View

B+

Retailer 8

£1,256 GBP

$1,685 USD

View

Retailer 9

£1,278 GBP

$1,715 USD

View

B+

Retailer 10

£1,516 GBP

$2,035 USD

View

B+

Retailer 11

£1,692 GBP

$2,270 USD

View

Retailer 12

£1,916 GBP

SGD 3,474 SGD

View

Price last confirmed 20 days ago

B+

Retailer 13

£2,039 GBP

View

B+

Retailer 14

£2,206 GBP

$2,960 USD

View

Most Expensive

Rare Carat

LGMQ30-148532 · Oct 28

£2,373 GBP

$3,185 USD

View

14 more retailers have this diamond

Prices start from £392 GBPSave up to £1,981 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.

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3.77ct Marquise

£392 GBP