Heart|Lab Grown|IGI

0.55ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG816612788

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG816612788

Diamond specifications and retailer prices

From £230 GBP

$309 USD

As of November 1, 2026

Save £843 GBP (79%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £1,073 GBP at Reve Diamonds · As of November 1, 2026

View at Reve Diamonds

About this 0.55ct lab-grown heart diamond

This 0.55ct lab-grown heart sits in the half to three-quarter carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816612788 or 816612788. Listed at 17 retailers as of November 1, 2026, with prices from £230 to £1,073, a £843 spread on the same certified stone. Reve Diamonds lists it at £1,073. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.55

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.1°

Pavilion angle38.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG816612788

Dimensions5.66 × 5.08 × 3.30 mm

L/W Ratio1.11

Girdle conditionFaceted

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 LG816612788

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: Nov 1

Current: £451 GBP|Low: £142 GBP|High: £1,073 GBP|Avg: £537 GBP|+3.2%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Reve Diamonds

November 2, 2026

Retailer 3£142 GBP

Retailer 2£230 GBP

Retailer 11£256 GBP

Retailer 9£304 GBP

Retailer 10£361 GBP

Retailer 6£387 GBP

Retailer 1£451 GBP

Retailer 5£465 GBP

Retailer 12£569 GBP

Retailer 8£787 GBP

Retailer 4£861 GBP

Retailer 7£1,032 GBP

Reve Diamonds£1,073 GBP

33 data points across 13 retailers

17 retailers£230 GBP to £1,073 GBP

Retailer 1

£206 GBP

$277 USD

Price last confirmed 25 days ago

Retailer 2

£230 GBP

$309 USD

View

Final sale: no returns

Retailer 3

£239 GBP

$321 USD

View

Price last confirmed 34 days ago

Retailer 4

£253 GBP

$339 USD

View

Price last confirmed 38 days ago

Retailer 5

£256 GBP

$344 USD

View

Price last confirmed 30 days ago

Retailer 6

£256 GBP

$344 USD

View

Price last confirmed 21 days ago

Retailer 7

£304 GBP

$408 USD

View

Retailer 8

£361 GBP

$485 USD

View

B+

Retailer 9

£387 GBP

$520 USD

View

B+

Retailer 10

£451 GBP

View

B+

Retailer 11

£465 GBP

ZAR 10,075 ZAR

View

B+

Retailer 12

£569 GBP

$764 USD

View

Retailer 13

£787 GBP

$1,056 USD

View

Retailer 14

£823 GBP

$1,105 USD

View

Price last confirmed 33 days ago

Retailer 15

£861 GBP

$1,155 USD

View

Retailer 16

£1,032 GBP

View

Most Expensive

Reve Diamonds

328EB5872 · Nov 1

£1,073 GBP

$1,440 USD

View

16 more retailers have this diamond

Prices start from £230 GBPSave up to £843 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.

Where to buy this spec

See every retailer carrying 0.55ct D FL heart lab-grown

Ranked by inventory count, with return policy, certs, and trust signals.

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