Heart|Lab Grown|IGI

1.88ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG818667589

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818667589

Diamond specifications and retailer prices

From £775 GBP

$1,039 USD

As of October 30, 2026

Save £3,176 GBP (80%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: £3,951 GBP at With Clarity · As of October 31, 2026

View at With Clarity

About this 1.88ct lab-grown heart diamond

This 1.88ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818667589 or 818667589. Listed at 18 retailers as of October 30, 2026, with prices from £775 to £3,951, a £3,176 spread on the same certified stone. With Clarity lists it at £3,951. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.88

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle37.3°

Pavilion angle39.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG818667589

Dimensions7.67 × 8.51 × 4.92 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 LG818667589

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: £2,293 GBP|Low: £673 GBP|High: £4,500 GBP|Avg: £1,892 GBP|-24.7%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

With Clarity

October 30, 2026

Retailer 11£775 GBP

Retailer 12£840 GBP

Retailer 6£884 GBP

Retailer 8£1,070 GBP

Retailer 3£1,124 GBP

Retailer 14£1,247 GBP

Retailer 10£1,282 GBP

Retailer 9£1,319 GBP

Retailer 4£1,512 GBP

Retailer 1£2,293 GBP

Retailer 2£2,413 GBP

Retailer 13£2,618 GBP

Retailer 5£2,760 GBP

Retailer 7£3,329 GBP

With Clarity£3,951 GBP

34 data points across 15 retailers

18 retailers£775 GBP to £3,951 GBP

Retailer 1

£731 GBP

$980 USD

Price last confirmed 28 days ago

Retailer 2

£775 GBP

$1,039 USD

View

Final sale: no returns

Retailer 3

£829 GBP

$1,111 USD

View

Price last confirmed 32 days ago

Retailer 4

£840 GBP

$1,125 USD

View

Retailer 5

£872 GBP

$1,168 USD

View

Price last confirmed 33 days ago

Retailer 6

£1,070 GBP

View

B+

Retailer 7

£1,124 GBP

$1,506 USD

View

B+

Retailer 8

£1,247 GBP

$1,671 USD

View

B+

Retailer 9

£1,282 GBP

ZAR 27,747 ZAR

View

B+

Retailer 10

£1,319 GBP

€1,683 EUR

View

B+

Retailer 11

£1,512 GBP

$2,026 USD

View

Retailer 12

£1,657 GBP

$2,220 USD

View

Price last confirmed 30 days ago

Retailer 13

£2,293 GBP

$3,072 USD

View

Retailer 14

£2,413 GBP

$3,233 USD

View

B+

Retailer 15

£2,618 GBP

View

Retailer 16

£2,760 GBP

SGD 4,998 SGD

View

Retailer 17

£3,329 GBP

$4,460 USD

View

Most Expensive

With Clarity

818667589 · Oct 31

£3,951 GBP

$5,294 USD

View

17 more retailers have this diamond

Prices start from £775 GBPSave up to £3,176 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.

Similar diamonds

1.88ct Heart

£775 GBP