Round|Lab Grown|IGI

4.27ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG689566603

Shape and cutting style on the report: Round brilliant

Certificate IGI LG689566603

Diamond specifications and retailer prices

From £1,729 GBP

$2,317 USD

As of October 29, 2026

Save £8,898 GBP (84%) vs most expensive(unlock to see where)

29 retailers carry this diamond

Most expensive: £10,628 GBP at Do Amore Diamonds · As of October 29, 2026

View at Do Amore Diamonds

About this 4.27ct lab-grown round diamond

This 4.27ct lab-grown round 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 LG689566603 or 689566603. Listed at 29 retailers as of October 29, 2026, with prices from £1,729 to £10,628, a £8,898 spread on the same certified stone. Do Amore Diamonds lists it at £10,628. 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

4.27

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.9°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG689566603

Dimensions10.49 × 10.45 × 6.35 mm

L/W Ratio1.00

Girdle conditionFaceted

Culet sizePointed

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 LG689566603

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 29

Current: £10,628 GBP|Low: £1,729 GBP|High: £17,890 GBP|Avg: £4,828 GBP

Do Amore Diamonds

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

Retailer 21

Retailer 22

October 30, 2026

Retailer 17£1,729 GBP

Retailer 15£1,767 GBP

Retailer 20£1,914 GBP

Retailer 10£1,921 GBP

Retailer 8£2,455 GBP

Retailer 13£2,712 GBP

Retailer 3£2,806 GBP

Retailer 4£2,874 GBP

Retailer 6£2,969 GBP

Retailer 19£3,147 GBP

Retailer 16£4,210 GBP

Retailer 21£4,244 GBP

Retailer 22£4,534 GBP

Retailer 7£4,827 GBP

Retailer 12£5,034 GBP

Retailer 9£5,160 GBP

Retailer 18£5,395 GBP

Retailer 11£6,909 GBP

Retailer 14£7,110 GBP

Retailer 5£8,293 GBP

Retailer 2£10,016 GBP

Do Amore Diamonds£10,628 GBP

37 data points across 22 retailers

29 retailers£1,729 GBP to £10,628 GBP

Retailer 1

£1,545 GBP

$2,070 USD

Price last confirmed 31 days ago

Retailer 2

£1,681 GBP

$2,252 USD

View

Price last confirmed 24 days ago

Retailer 3

£1,681 GBP

$2,252 USD

View

Price last confirmed 17 days ago

Retailer 4

£1,729 GBP

$2,317 USD

View

Final sale: no returns

Retailer 5

£1,767 GBP

$2,368 USD

View

Price last confirmed 31 days ago

Retailer 6

£1,792 GBP

$2,401 USD

View

Retailer 7

£1,792 GBP

$2,401 USD

View

Price last confirmed 28 days ago

Retailer 8

£1,801 GBP

$2,413 USD

View

Price last confirmed 37 days ago

Retailer 9

£1,914 GBP

$2,565 USD

View

Retailer 10

£1,921 GBP

$2,574 USD

View

Retailer 11

£2,455 GBP

HK$25,700 HKD

View

Retailer 12

£2,712 GBP

View

Retailer 13

£2,719 GBP

$3,643 USD

View

Price last confirmed 30 days ago

Retailer 14

£2,806 GBP

$3,760 USD

View

Retailer 15

£2,874 GBP

$3,851 USD

View

Retailer 16

£2,969 GBP

$3,978 USD

View

Retailer 17

£3,147 GBP

€4,016 EUR

View

Retailer 18

£4,210 GBP

ZAR 91,132 ZAR

View

Retailer 19

£4,244 GBP

A$8,749 AUD

View

Price last confirmed 8 days ago

Retailer 20

£4,534 GBP

$6,075 USD

View

Price last confirmed 9 days ago

B+

Retailer 21

£4,827 GBP

$6,468 USD

View

B+

Retailer 22

£5,034 GBP

$6,745 USD

View

B+

Retailer 23

£5,160 GBP

$6,914 USD

View

B+

Retailer 24

£5,395 GBP

View

B+

Retailer 25

£6,909 GBP

$9,257 USD

View

B+

Retailer 26

£7,110 GBP

SGD 12,874 SGD

View

Retailer 27

£8,293 GBP

A$17,094 AUD

View

Price last confirmed 21 days ago

Retailer 28

£10,016 GBP

$13,420 USD

View

Most Expensive

Do Amore Diamonds

27-C0BC02370 · Oct 29

£10,628 GBP

$14,240 USD

View

28 more retailers have this diamond

Prices start from £1,729 GBPSave up to £8,898 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

4.27ct Round

£1,729 GBP