Marquise|Lab Grown|IGI

1.70ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG845669358

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845669358

Diamond specifications and retailer prices

From £258 GBP

HK$2,700 HKD

As of November 1, 2026

Save £830 GBP (76%) vs most expensive(unlock to see where)

23 retailers carry this diamond

Most expensive: £1,088 GBP at Brilliant Earth · As of November 2, 2026

View at Brilliant Earth

About this 1.7ct lab-grown marquise diamond

This 1.7ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG845669358 or 845669358. Listed at 23 retailers as of November 1, 2026, with prices from £258 to £1,088, a £830 spread on the same certified stone. Brilliant Earth lists it at £1,088. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.2°

Pavilion angle39.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG845669358

Dimensions12.26 × 5.96 × 3.87 mm

L/W Ratio2.06

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 LG845669358

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: £1,088 GBP|Low: £187 GBP|High: £1,088 GBP|Avg: £538 GBP

Brilliant Earth

Retailer 2

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November 2, 2026

Retailer 7£187 GBP

Retailer 10£209 GBP

Retailer 14£217 GBP

Retailer 5£232 GBP

Retailer 16£258 GBP

Retailer 18£272 GBP

Retailer 6£350 GBP

Retailer 21£369 GBP

Retailer 11£389 GBP

Retailer 23£393 GBP

Retailer 8£434 GBP

Retailer 19£439 GBP

Retailer 9£444 GBP

Retailer 22£545 GBP

Retailer 2£595 GBP

Retailer 3£747 GBP

Retailer 12£749 GBP

Retailer 17£785 GBP

Retailer 13£887 GBP

Retailer 4£914 GBP

Retailer 20£932 GBP

Retailer 15£955 GBP

Retailer 24£1,011 GBP

Brilliant Earth£1,088 GBP

13 data points across 24 retailers

23 retailers£258 GBP to £1,088 GBP

Retailer 1

£187 GBP

$251 USD

Price last confirmed 10 days ago

Retailer 2

£217 GBP

$291 USD

View

Price last confirmed 9 days ago

Retailer 3

£232 GBP

$312 USD

View

Price last confirmed 8 days ago

Retailer 4

£258 GBP

HK$2,700 HKD

View

Retailer 5

£272 GBP

View

Retailer 6

£350 GBP

$470 USD

View

Price last confirmed 5 days ago

Retailer 7

£369 GBP

€472 EUR

View

Retailer 8

£389 GBP

$522 USD

View

Price last confirmed 7 days ago

Retailer 9

£393 GBP

ZAR 8,513 ZAR

View

Price last confirmed 10 days ago

Retailer 10

£434 GBP

$583 USD

View

Price last confirmed 7 days ago

Retailer 11

£439 GBP

View

Retailer 12

£444 GBP

$596 USD

View

Retailer 13

£545 GBP

A$1,125 AUD

View

Price last confirmed 9 days ago

Retailer 14

£595 GBP

$799 USD

View

Retailer 15

£747 GBP

$1,002 USD

View

Price last confirmed 8 days ago

B+

Retailer 16

£749 GBP

SGD 1,359 SGD

View

B+

Retailer 17

£785 GBP

$1,053 USD

View

Retailer 18

£887 GBP

$1,190 USD

View

Retailer 19

£914 GBP

$1,226 USD

View

Price last confirmed 7 days ago

B+

Retailer 20

£932 GBP

View

Retailer 21

£955 GBP

$1,281 USD

View

Retailer 22

£1,011 GBP

$1,357 USD

View

Price last confirmed 8 days ago

Most Expensive

Brilliant Earth

22219208A · Nov 2

£1,088 GBP

$1,460 USD

View

22 more retailers have this diamond

Prices start from £258 GBPSave up to £830 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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