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Round|Lab Grown|IGI

4.31ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG832602921

Shape and cutting style on the report: Round brilliant

Certificate IGI LG832602921

Diamond specifications and retailer prices

From £2,653 GBP
HK$27,600 HKD
As of October 30, 2026
Save £7,582 GBP (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £10,235 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 LG832602921 or 832602921. Listed at 13 retailers as of October 29, 2026, with prices from £2,653 to £10,235, a £7,582 spread on the same certified stone. Brilliant Earth lists it at £10,235. 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 angle33.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG832602921
Dimensions10.59 × 10.62 × 6.31 mm
L/W Ratio1.00
Girdle conditionFaceted
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
10.59 mm10.62 mm4.31 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG832602921
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 59.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £2,928 GBP|Low: £2,653 GBP|High: £8,413 GBP|Avg: £4,927 GBP|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 10£2,653 GBP
Retailer 1£2,928 GBP
Retailer 11£3,274 GBP
Retailer 6£3,475 GBP
Retailer 7£3,820 GBP
Retailer 4£4,635 GBP
Retailer 3£5,696 GBP
Retailer 9£5,813 GBP
Retailer 5£5,860 GBP
Retailer 8£7,597 GBP
Retailer 2£8,413 GBP

22 data points across 11 retailers

13 retailers£2,653 GBP to £10,235 GBP

A
Cheapest Retailer
-
£2,653 GBP
HK$27,600 HKD
A
Retailer 2
-
£2,928 GBP
View
A
Retailer 3
-
£3,274 GBP
$4,360 USD
View
A
Retailer 4
-
£3,475 GBP
€4,407 EUR
View
A
Retailer 5
-
£3,820 GBP
$5,087 USD
View
A
Retailer 6
-
£4,635 GBP
ZAR 99,708 ZAR
View
B+
Retailer 7
-
£5,696 GBP
$7,586 USD
View
B+
Retailer 8
-
£5,813 GBP
$7,741 USD
View
B+
Retailer 9
-
£5,860 GBP
View
B+
Retailer 10
-
£6,473 GBP
$8,620 USD
View
B+
Retailer 11
-
£7,597 GBP
$10,117 USD
View
B
Retailer 12
-
£8,413 GBP
$11,203 USD
View
Most Expensive
B
Brilliant Earth
21765054A · Oct 29
£10,235 GBP
$13,630 USD
View
12 more retailers have this diamond
Prices start from £2,653 GBPSave up to £7,582 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
£2,653 GBP