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Radiant|Lab Grown|IGI

4.15ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG772674455

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

Certificate IGI LG772674455

Diamond specifications and retailer prices

From $3,270 AUD
$2,297 USD
As of October 29, 2026
Save $17,500 AUD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $20,770 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.15ct lab-grown radiant diamond

This 4.15ct 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 LG772674455 or 772674455. Listed at 14 retailers as of October 29, 2026, with prices from $3,270 to $20,770, a $17,500 spread on the same certified stone. Brilliant Earth lists it at $20,770. 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

4.15
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.6°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG772674455
Dimensions10.10 × 8.06 × 5.59 mm
L/W Ratio1.25
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.10 mm8.06 mm4.15 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG772674455
Side View
Table 68.0%Crown 47.6°Girdle: MED-STKPavilion 32.8°Culet: NoneDepth 69.4%

Caratlytics Score

How it works →
A
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: $20,770 AUD|Low: $3,270 AUD|High: $679,484 AUD|Avg: $32,111 AUD|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 3$3,270 AUD
Retailer 2$4,172 AUD
Retailer 13$4,207 AUD
Retailer 12$4,514 AUD
Retailer 8$4,632 AUD
Retailer 6$6,263 AUD
Retailer 10$7,929 AUD
Retailer 9$7,938 AUD
Retailer 7$8,414 AUD
Retailer 5$9,424 AUD
Retailer 11$10,316 AUD
Retailer 4$13,782 AUD
Brilliant Earth$20,770 AUD

30 data points across 13 retailers

14 retailers$3,270 AUD to $20,770 AUD

A
Cheapest Retailer
-
$3,270 AUD
$2,297 USD
A
Retailer 2
-
$4,172 AUD
£2,308 GBP
View
A
Retailer 3
-
$4,207 AUD
$2,955 USD
View
A
Retailer 4
-
$4,514 AUD
$3,171 USD
View
A
Retailer 5
-
$4,632 AUD
€3,099 EUR
View
Price last confirmed 7 days ago
A
Retailer 6
-
$6,263 AUD
ZAR 71,075 ZAR
View
A
Retailer 7
-
$7,578 AUD
$5,323 USD
View
A
Retailer 8
-
$7,929 AUD
$5,570 USD
View
A
Retailer 9
-
$7,938 AUD
$5,576 USD
View
A
Retailer 10
-
$8,414 AUD
£4,654 GBP
View
Retailer 11
-
$9,424 AUD
$6,620 USD
View
Price last confirmed 16 days ago
B+
Retailer 12
-
$10,316 AUD
$7,246 USD
View
Retailer 13
-
$13,782 AUD
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
20043916A · Oct 29
$20,770 AUD
$14,590 USD
View
13 more retailers have this diamond
Prices start from $3,270 AUDSave up to $17,500 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
4.15ct Radiant
$3,270 AUD