Heart|Lab Grown|IGI

1.71ct D VS1 Heart Lab Grown Diamond

EX • D/VS1 • IGI LG791637154

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG791637154

Diamond specifications and retailer prices

From £190 GBP

$255 USD

As of October 30, 2026

Save £1,347 GBP (88%) vs most expensive(unlock to see where)

20 retailers carry this diamond

Most expensive: £1,537 GBP at Brilliant Earth · As of October 28, 2026

View at Brilliant Earth

About this 1.71ct lab-grown heart diamond

This 1.71ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG791637154 or 791637154. Listed at 20 retailers as of October 28, 2026, with prices from £190 to £1,537, a £1,347 spread on the same certified stone. Brilliant Earth lists it at £1,537. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.2°

Pavilion angle40.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG791637154

Dimensions7.29 × 8.22 × 5.04 mm

L/W Ratio1.13

Girdle conditionFaceted

Culet sizePointed

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG791637154

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: £1,537 GBP|Low: £190 GBP|High: £2,060 GBP|Avg: £583 GBP|-15.6%

Brilliant Earth

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

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

Retailer 20

October 30, 2026

Retailer 19£190 GBP

Retailer 8£213 GBP

Retailer 5£221 GBP

Retailer 3£236 GBP

Retailer 4£236 GBP

Retailer 18£264 GBP

Retailer 16£355 GBP

Retailer 9£394 GBP

Retailer 14£406 GBP

Retailer 2£449 GBP

Retailer 11£486 GBP

Retailer 10£495 GBP

Retailer 15£551 GBP

Retailer 17£725 GBP

Retailer 20£759 GBP

Retailer 12£798 GBP

Retailer 6£929 GBP

Retailer 13£952 GBP

Retailer 7£1,022 GBP

Brilliant Earth£1,537 GBP

36 data points across 20 retailers

20 retailers£190 GBP to £1,537 GBP

Cheapest Retailer

£190 GBP

$255 USD

Retailer 2

£213 GBP

$286 USD

View

Final sale: no returns

Retailer 3

£221 GBP

$296 USD

View

Retailer 4

£236 GBP

$316 USD

View

Retailer 5

£236 GBP

$316 USD

View

Retailer 6

£264 GBP

View

Price last confirmed 13 days ago

Retailer 7

£355 GBP

$475 USD

View

Retailer 8

£394 GBP

$528 USD

View

Retailer 9

£406 GBP

ZAR 8,783 ZAR

View

Retailer 10

£449 GBP

View

B+

Retailer 11

£486 GBP

$651 USD

View

B+

Retailer 12

£495 GBP

$663 USD

View

B+

Retailer 13

£551 GBP

A$1,135 AUD

View

B+

Retailer 14

£725 GBP

$972 USD

View

B+

Retailer 15

£759 GBP

$1,017 USD

View

Retailer 16

£798 GBP

$1,069 USD

View

Retailer 17

£929 GBP

$1,245 USD

View

Retailer 18

£952 GBP

View

Retailer 19

£1,022 GBP

$1,370 USD

View

Most Expensive

Brilliant Earth

18633194A · Oct 28

£1,537 GBP

$2,060 USD

View

19 more retailers have this diamond

Prices start from £190 GBPSave up to £1,347 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

1.71ct Heart

£190 GBP