Round|Lab Grown|IGI

1.61ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG551274402

Shape and cutting style on the report: Round brilliant

Certificate IGI LG551274402

Diamond specifications and retailer prices

From £232 GBP

$312 USD

As of November 1, 2026

Save £1,608 GBP (87%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £1,841 GBP at Do Amore Diamonds · As of November 2, 2026

View at Do Amore Diamonds

About this 1.61ct lab-grown round diamond

This 1.61ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG551274402 or 551274402. Listed at 17 retailers as of November 1, 2026, with prices from £232 to £1,841, a £1,608 spread on the same certified stone. Do Amore Diamonds lists it at £1,841. 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

1.61

Carat

Colour

SI1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.6°

Pavilion angle41°

OriginLab Grown

Grading LabIGI

CertificateIGI LG551274402

Dimensions7.47 × 7.43 × 4.66 mm

L/W Ratio1.01

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 LG551274402

Side View

Caratlytics Score

How it works →

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: Nov 1

Current: £504 GBP|Low: £183 GBP|High: £1,153 GBP|Avg: £501 GBP|+5.2%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

November 3, 2026

Retailer 9£232 GBP

Retailer 8£257 GBP

Retailer 2£288 GBP

Retailer 6£376 GBP

Retailer 7£426 GBP

Retailer 10£455 GBP

Retailer 1£504 GBP

Retailer 4£585 GBP

Retailer 5£791 GBP

Retailer 3£1,139 GBP

41 data points across 10 retailers

17 retailers£232 GBP to £1,841 GBP

Retailer 1

£199 GBP

$267 USD

Price last confirmed 32 days ago

Retailer 2

£208 GBP

$279 USD

View

Price last confirmed 41 days ago

Retailer 3

£232 GBP

$312 USD

View

Final sale: no returns

Retailer 4

£241 GBP

$323 USD

View

Price last confirmed 41 days ago

Retailer 5

£254 GBP

$341 USD

View

Price last confirmed 42 days ago

Retailer 6

£257 GBP

$345 USD

View

Price last confirmed 31 days ago

Retailer 7

£288 GBP

$386 USD

View

Retailer 8

£376 GBP

$505 USD

View

B+

Retailer 9

£426 GBP

$571 USD

View

B+

Retailer 10

£455 GBP

$611 USD

View

B+

Retailer 11

£504 GBP

View

Retailer 12

£585 GBP

$785 USD

View

Price last confirmed 12 days ago

Retailer 13

£791 GBP

$1,061 USD

View

Retailer 14

£914 GBP

$1,226 USD

View

Price last confirmed 43 days ago

Retailer 15

£914 GBP

$1,226 USD

View

Price last confirmed 26 days ago

Retailer 16

£1,139 GBP

View

Most Expensive

Do Amore Diamonds

27-ED0C343CA · Nov 2

£1,841 GBP

$2,470 USD

View

16 more retailers have this diamond

Prices start from £232 GBPSave up to £1,608 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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1.61ct Round

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