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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 $2,392 AUD
£1,323 GBP
As of October 30, 2026
Save $18,191 AUD (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $20,582 AUD 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 $2,392 to $20,582, a $18,191 spread on the same certified stone. Brilliant Earth lists it at $20,582. 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

How it works →
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: $20,582 AUD|Low: $2,387 AUD|High: $20,582 AUD|Avg: $6,216 AUD
Brilliant Earth
Retailer 2
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October 30, 2026
Retailer 2$2,392 AUD
Retailer 14$2,468 AUD
Retailer 8$2,685 AUD
Retailer 10$2,764 AUD
Retailer 23$2,862 AUD
Retailer 19$3,103 AUD
Retailer 7$3,298 AUD
Retailer 5$3,301 AUD
Retailer 13$4,059 AUD
Retailer 21$4,092 AUD
Retailer 22$4,395 AUD
Retailer 3$5,366 AUD
Retailer 11$5,922 AUD
Retailer 17$6,094 AUD
Retailer 15$6,189 AUD
Retailer 20$7,370 AUD
Retailer 6$7,777 AUD
Retailer 18$8,220 AUD
Retailer 4$8,263 AUD
Retailer 16$8,407 AUD
Retailer 12$9,562 AUD
Retailer 9$10,041 AUD
Brilliant Earth$20,582 AUD

25 data points across 23 retailers

26 retailers$2,392 AUD to $20,582 AUD

A
Cheapest Retailer
-
$2,392 AUD
£1,323 GBP
A
Retailer 2
-
$2,468 AUD
$1,734 USD
View
A
Retailer 3
-
$2,685 AUD
$1,886 USD
View
A
Retailer 4
-
$2,764 AUD
$1,942 USD
View
Final sale: no returns
A
Retailer 5
-
$2,862 AUD
$2,011 USD
View
A
Retailer 6
-
$3,103 AUD
$2,180 USD
View
A
Retailer 7
-
$3,298 AUD
HK$18,100 HKD
View
A
Retailer 8
-
$3,301 AUD
$2,319 USD
View
Retailer 9
-
$3,917 AUD
$2,752 USD
View
Price last confirmed 17 days ago
A
Retailer 10
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$4,059 AUD
£2,245 GBP
View
A
Retailer 11
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$4,092 AUD
$2,875 USD
View
A
Retailer 12
-
$4,395 AUD
$3,088 USD
View
A
Retailer 13
-
$5,366 AUD
$3,770 USD
View
A
Retailer 14
-
$5,922 AUD
£3,276 GBP
View
A
Retailer 15
-
$6,094 AUD
ZAR 69,163 ZAR
View
A
Retailer 16
-
$6,189 AUD
€4,141 EUR
View
A
Retailer 17
-
$7,370 AUD
$5,178 USD
View
A
Retailer 18
-
$7,777 AUD
$5,464 USD
View
A
Retailer 19
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$8,220 AUD
£4,547 GBP
View
Retailer 20
-
$8,251 AUD
$5,797 USD
View
Price last confirmed 73 days ago
A
Retailer 21
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$8,263 AUD
$5,805 USD
View
Retailer 22
-
$8,407 AUD
View
Price last confirmed 7 days ago
B+
Retailer 23
-
$9,562 AUD
SGD 9,078 SGD
View
B+
Retailer 24
-
$10,041 AUD
$7,054 USD
View
Retailer 25
-
$13,861 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
Brilliant Earth
9886642A · Oct 29
$20,582 AUD
$14,460 USD
View
25 more retailers have this diamond
Prices start from $2,392 AUDSave up to $18,191 AUD

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
$2,392 AUD