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Radiant|Lab Grown|IGI

4.11ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG628440621

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG628440621

Diamond specifications and retailer prices

From £1,262 GBP
As of October 30, 2026
Save £9,597 GBP (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £10,858 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.11ct lab-grown radiant diamond

This 4.11ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG628440621 or 628440621. Listed at 26 retailers as of October 29, 2026, with prices from £1,262 to £10,858, a £9,597 spread on the same certified stone. Brilliant Earth lists it at £10,858. 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

4.11
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628440621
Dimensions11.83 × 7.90 × 5.05 mm
L/W Ratio1.50
Culet sizePointed
Top View
11.83 mm7.90 mm4.11 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628440621
Side View
Table 67.0%Crown 37°Girdle: MediumPavilion 32.5°Culet: NoneDepth 63.9%

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 30
Current: £10,858 GBP|Low: £1,259 GBP|High: £10,858 GBP|Avg: £3,279 GBP
Brilliant Earth
Retailer 2
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October 30, 2026
Retailer 2£1,262 GBP
Retailer 14£1,302 GBP
Retailer 8£1,416 GBP
Retailer 10£1,458 GBP
Retailer 23£1,510 GBP
Retailer 19£1,637 GBP
Retailer 7£1,740 GBP
Retailer 5£1,741 GBP
Retailer 13£2,141 GBP
Retailer 21£2,159 GBP
Retailer 22£2,319 GBP
Retailer 3£2,831 GBP
Retailer 11£3,124 GBP
Retailer 17£3,215 GBP
Retailer 15£3,265 GBP
Retailer 20£3,888 GBP
Retailer 6£4,103 GBP
Retailer 18£4,336 GBP
Retailer 4£4,359 GBP
Retailer 16£4,435 GBP
Retailer 12£5,045 GBP
Retailer 9£5,297 GBP
Brilliant Earth£10,858 GBP

25 data points across 23 retailers

26 retailers£1,262 GBP to £10,858 GBP

A
Cheapest Retailer
-
£1,262 GBP
A
Retailer 2
-
£1,302 GBP
$1,734 USD
View
A
Retailer 3
-
£1,416 GBP
$1,886 USD
View
A
Retailer 4
-
£1,458 GBP
$1,942 USD
View
Final sale: no returns
A
Retailer 5
-
£1,510 GBP
$2,011 USD
View
A
Retailer 6
-
£1,637 GBP
$2,180 USD
View
A
Retailer 7
-
£1,740 GBP
HK$18,100 HKD
View
A
Retailer 8
-
£1,741 GBP
$2,319 USD
View
Retailer 9
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£2,067 GBP
$2,752 USD
View
Price last confirmed 17 days ago
A
Retailer 10
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£2,141 GBP
View
A
Retailer 11
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£2,159 GBP
$2,875 USD
View
A
Retailer 12
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£2,319 GBP
$3,088 USD
View
A
Retailer 13
-
£2,831 GBP
$3,770 USD
View
A
Retailer 14
-
£3,124 GBP
View
A
Retailer 15
-
£3,215 GBP
ZAR 69,163 ZAR
View
A
Retailer 16
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£3,265 GBP
€4,141 EUR
View
A
Retailer 17
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£3,888 GBP
$5,178 USD
View
A
Retailer 18
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£4,103 GBP
$5,464 USD
View
A
Retailer 19
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£4,336 GBP
View
Retailer 20
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£4,353 GBP
$5,797 USD
View
Price last confirmed 73 days ago
A
Retailer 21
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£4,359 GBP
$5,805 USD
View
Retailer 22
-
£4,435 GBP
A$9,087 AUD
View
Price last confirmed 7 days ago
B+
Retailer 23
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£5,045 GBP
SGD 9,078 SGD
View
B+
Retailer 24
-
£5,297 GBP
$7,054 USD
View
Retailer 25
-
£7,313 GBP
A$14,982 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
Brilliant Earth
9886642A · Oct 29
£10,858 GBP
$14,460 USD
View
25 more retailers have this diamond
Prices start from £1,262 GBPSave up to £9,597 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
4.11ct Radiant
£1,262 GBP