Marquise|Lab Grown|IGI

3.17ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG766601599

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG766601599

Diamond specifications and retailer prices

From £2,991 GBP

$4,008 USD

As of October 31, 2026

Save £3,696 GBP (55%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £9,976 GBP at Taylor and Hart · As of October 14, 2026

View at Taylor and Hart

About this 3.17ct lab-grown marquise diamond

This 3.17ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG766601599 or 766601599. Listed at 19 retailers as of October 31, 2026, with a 124% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.17

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.3°

Pavilion angle41.3°

OriginLab Grown

Grading LabIGI

CertificateIGI LG766601599

Dimensions15.11 × 7.64 × 4.89 mm

L/W Ratio1.98

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 LG766601599

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 31

Current: £6,687 GBP|Low: £2,039 GBP|High: £9,976 GBP|Avg: £5,273 GBP|-28.8%

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

Retailer 15

Retailer 16

Retailer 17

Taylor and Hart

October 30, 2026

Retailer 9£2,039 GBP

Retailer 6£2,749 GBP

Retailer 17£2,768 GBP

Retailer 5£2,866 GBP

Retailer 15£2,963 GBP

Retailer 11£2,991 GBP

Retailer 10£3,720 GBP

Retailer 12£3,877 GBP

Retailer 4£4,345 GBP

Retailer 2£4,421 GBP

Retailer 7£5,680 GBP

Retailer 13£6,550 GBP

Retailer 1£6,687 GBP

Retailer 8£7,061 GBP

Retailer 16£7,123 GBP

Retailer 14£7,296 GBP

Retailer 3£8,286 GBP

Taylor and Hart£9,976 GBP

32 data points across 18 retailers

19 retailers£2,991 GBP to £6,687 GBP

Retailer 1

£2,455 GBP

$3,290 USD

Price last confirmed 24 days ago

Retailer 2

£2,671 GBP

$3,579 USD

View

Price last confirmed 18 days ago

Retailer 3

£2,848 GBP

$3,816 USD

View

Price last confirmed 20 days ago

Retailer 4

£2,848 GBP

$3,816 USD

View

Price last confirmed 24 days ago

Retailer 5

£2,991 GBP

$4,008 USD

View

Retailer 6

£3,050 GBP

$4,087 USD

View

Price last confirmed 38 days ago

Retailer 7

£3,559 GBP

$4,768 USD

View

Price last confirmed 25 days ago

Retailer 8

£3,720 GBP

€4,747 EUR

View

Retailer 9

£3,877 GBP

View

Price last confirmed 17 days ago

Retailer 10

£4,345 GBP

View

Price last confirmed 18 days ago

Retailer 11

£4,421 GBP

$5,924 USD

View

Price last confirmed 18 days ago

Retailer 12

£5,680 GBP

$7,610 USD

View

Price last confirmed 25 days ago

Retailer 13

£6,550 GBP

ZAR 141,778 ZAR

View

Price last confirmed 17 days ago

B+

Retailer 14

£6,687 GBP

$8,960 USD

View

Retailer 15

£7,061 GBP

A$14,556 AUD

View

Price last confirmed 34 days ago

Retailer 16

£7,123 GBP

$9,544 USD

View

Price last confirmed 18 days ago

Retailer 17

£7,296 GBP

View

Price last confirmed 18 days ago

Retailer 18

£8,286 GBP

$11,103 USD

View

Price last confirmed 19 days ago

Most Expensive

Taylor and Hart

I4A2MOO · Oct 14

£9,976 GBP

$13,367 USD

View

Price last confirmed 19 days ago

18 more retailers have this diamond

Prices start from £2,991 GBPSave up to £3,696 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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