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Round|Lab Grown|IGI

4.31ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG694550809

Shape and cutting style on the report: Round brilliant

Certificate IGI LG694550809

Diamond specifications and retailer prices

From £1,683 GBP
$2,255 USD
As of October 29, 2026
Save £4,421 GBP (72%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £6,104 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.31ct lab-grown round diamond

This 4.31ct 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 LG694550809 or 694550809. Listed at 17 retailers as of October 29, 2026, with prices from £1,683 to £6,104, a £4,421 spread on the same certified stone. Taylor and Hart lists it at £6,104. 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

4.31
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG694550809
Dimensions10.47 × 10.54 × 6.38 mm
L/W Ratio1.01
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
Top View
10.47 mm10.54 mm4.31 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG694550809
Side View
Table 57.0%Crown 33.8°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £2,390 GBP|Low: £1,356 GBP|High: £6,249 GBP|Avg: £3,297 GBP|+8.8%
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
Taylor and Hart
October 30, 2026
Retailer 12£1,356 GBP
Retailer 14£1,683 GBP
Retailer 6£1,744 GBP
Retailer 5£1,879 GBP
Retailer 1£2,390 GBP
Retailer 10£2,517 GBP
Retailer 9£2,519 GBP
Retailer 13£2,798 GBP
Retailer 4£3,679 GBP
Retailer 7£3,713 GBP
Retailer 11£3,743 GBP
Retailer 3£4,700 GBP
Retailer 2£4,971 GBP
Retailer 8£5,008 GBP
Taylor and Hart£6,104 GBP

41 data points across 15 retailers

17 retailers£1,683 GBP to £6,104 GBP

Retailer 1
-
£1,356 GBP
Price last confirmed 13 days ago
Retailer 2
-
£1,443 GBP
$1,934 USD
View
Price last confirmed 23 days ago
A
Retailer 3
-
£1,683 GBP
$2,255 USD
View
Final sale: no returns
Retailer 4
-
£1,744 GBP
$2,337 USD
View
Price last confirmed 28 days ago
A
Retailer 5
-
£1,879 GBP
$2,518 USD
View
A
Retailer 6
-
£2,390 GBP
View
Retailer 7
-
£2,398 GBP
$3,213 USD
View
Price last confirmed 23 days ago
A
Retailer 8
-
£2,517 GBP
$3,372 USD
View
A
Retailer 9
-
£2,519 GBP
$3,375 USD
View
A
Retailer 10
-
£2,798 GBP
$3,749 USD
View
A
Retailer 11
-
£3,679 GBP
$4,929 USD
View
A
Retailer 12
-
£3,713 GBP
ZAR 80,375 ZAR
View
Retailer 13
-
£3,743 GBP
A$7,716 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
£4,700 GBP
$6,298 USD
View
B+
Retailer 15
-
£4,971 GBP
$6,660 USD
View
B+
Retailer 16
-
£5,008 GBP
View
Most Expensive
B+
Taylor and Hart
O3GHO2N · Oct 30
£6,104 GBP
$8,179 USD
View
16 more retailers have this diamond
Prices start from £1,683 GBPSave up to £4,421 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.

A
4.31ct Round
£1,683 GBP