Cushion|Lab Grown|IGI

1.71ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG843642191

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG843642191

Diamond specifications and retailer prices

From £347 GBP

$465 USD

As of October 30, 2026

Save £1,091 GBP (76%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £1,438 GBP at Brilliance · As of October 30, 2026

View at Brilliance

About this 1.71ct lab-grown cushion diamond

This 1.71ct lab-grown cushion 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 LG843642191 or 843642191. Listed at 19 retailers as of October 30, 2026, with prices from £347 to £1,438, a £1,091 spread on the same certified stone. Brilliance lists it at £1,438. 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

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle39.7°

Pavilion angle39.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG843642191

Dimensions6.82 × 6.80 × 4.63 mm

L/W Ratio1.00

Girdle conditionFaceted

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG843642191

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: £1,438 GBP|Low: £347 GBP|High: £1,438 GBP|Avg: £843 GBP|+7.4%

Brilliance

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October 31, 2026

Retailer 6£347 GBP

Retailer 3£420 GBP

Retailer 14£429 GBP

Retailer 4£528 GBP

Retailer 19£530 GBP

Retailer 5£570 GBP

Retailer 12£607 GBP

Retailer 2£613 GBP

Retailer 15£633 GBP

Retailer 18£660 GBP

Retailer 16£895 GBP

Retailer 13£945 GBP

Retailer 7£1,078 GBP

Retailer 10£1,224 GBP

Retailer 11£1,243 GBP

Retailer 8£1,261 GBP

Retailer 9£1,403 GBP

Retailer 17£1,419 GBP

Brilliance£1,438 GBP

15 data points across 19 retailers

19 retailers£347 GBP to £1,438 GBP

Cheapest Retailer

£347 GBP

$465 USD

Final sale: no returns

Retailer 2

£420 GBP

HK$4,400 HKD

View

Retailer 3

£429 GBP

View

Retailer 4

£528 GBP

$707 USD

View

B+

Retailer 5

£530 GBP

$710 USD

View

B+

Retailer 6

£570 GBP

$764 USD

View

B+

Retailer 7

£607 GBP

$813 USD

View

B+

Retailer 8

£613 GBP

€782 EUR

View

B+

Retailer 9

£633 GBP

View

B+

Retailer 10

£660 GBP

ZAR 14,293 ZAR

View

Retailer 11

£895 GBP

A$1,845 AUD

View

Retailer 12

£945 GBP

A$1,947 AUD

View

Retailer 13

£1,078 GBP

$1,445 USD

View

Price last confirmed 10 days ago

Retailer 14

£1,224 GBP

SGD 2,216 SGD

View

Retailer 15

£1,243 GBP

$1,666 USD

View

Retailer 16

£1,261 GBP

$1,689 USD

View

Retailer 17

£1,403 GBP

$1,880 USD

View

Retailer 18

£1,419 GBP

View

Most Expensive

Brilliance

D46167164 · Oct 30

£1,438 GBP

$1,927 USD

View

18 more retailers have this diamond

Prices start from £347 GBPSave up to £1,091 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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