Oval|Lab Grown|IGI

1.66ct E IF Oval Lab Grown Diamond

ID • E/IF • IGI LG801609388

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG801609388

Diamond specifications and retailer prices

From £3,284 GBP

$4,400 USD

As of October 31, 2026

14 retailers carry this diamond

Most expensive: £3,284 GBP at Brilliant Earth

View at Brilliant Earth

About this 1.66ct lab-grown oval diamond

This 1.66ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG801609388 or 801609388. Listed at 14 retailers as of October 31, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.1°

Pavilion angle36.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG801609388

Dimensions9.36 × 6.44 × 4.15 mm

L/W Ratio1.45

Girdle conditionFaceted

Culet sizePointed

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

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG801609388

Side View

Caratlytics Score

How it works →

Good

Decent quality, room for better deals

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Price History

Last verified: Oct 31

Current: £3,284 GBP|Low: £188 GBP|High: £3,284 GBP|Avg: £915 GBP

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

October 24, 2026

Retailer 4£188 GBP

Retailer 10£331 GBP

Retailer 9£440 GBP

Retailer 7£505 GBP

Retailer 3£525 GBP

Retailer 5£559 GBP

Retailer 2£582 GBP

Retailer 12£1,248 GBP

Retailer 8£1,298 GBP

Retailer 11£1,339 GBP

Retailer 6£1,948 GBP

Brilliant Earth£3,284 GBP

34 data points across 12 retailers

14 retailers

Retailer 1

£440 GBP

$590 USD

Price last confirmed 14 days ago

Retailer 2

£505 GBP

€644 EUR

View

Price last confirmed 9 days ago

Retailer 3

£525 GBP

$703 USD

View

Price last confirmed 7 days ago

Retailer 4

£559 GBP

ZAR 12,097 ZAR

View

Price last confirmed 9 days ago

Retailer 5

£582 GBP

View

Price last confirmed 8 days ago

Retailer 6

£700 GBP

$938 USD

View

Price last confirmed 18 days ago

Retailer 7

£913 GBP

$1,223 USD

View

Price last confirmed 8 days ago

Retailer 8

£1,093 GBP

$1,464 USD

View

Price last confirmed 9 days ago

Retailer 9

£1,248 GBP

$1,672 USD

View

Price last confirmed 9 days ago

Retailer 10

£1,298 GBP

View

Price last confirmed 11 days ago

Retailer 11

£1,339 GBP

A$2,761 AUD

View

Price last confirmed 30 days ago

Retailer 12

£1,396 GBP

$1,870 USD

View

Price last confirmed 8 days ago

Retailer 13

£1,948 GBP

$2,610 USD

View

Price last confirmed 14 days ago

Most Expensive

Brilliant Earth

19652006A · Oct 31

£3,284 GBP

$4,400 USD

View

13 more retailers have this diamond

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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1.66ct Oval

£3,284 GBP