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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 $4,090 NZD
$2,297 USD
As of October 29, 2026
Save $21,888 NZD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $25,977 NZD 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 $4,090 to $25,977, a $21,888 spread on the same certified stone. Brilliant Earth lists it at $25,977. 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: $25,977 NZD|Low: $4,090 NZD|High: $849,833 NZD|Avg: $40,162 NZD|-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$4,090 NZD
Retailer 2$5,219 NZD
Retailer 13$5,261 NZD
Retailer 12$5,646 NZD
Retailer 8$5,794 NZD
Retailer 6$7,833 NZD
Retailer 10$9,917 NZD
Retailer 9$9,928 NZD
Retailer 7$10,524 NZD
Retailer 5$11,787 NZD
Retailer 11$12,902 NZD
Retailer 4$17,237 NZD
Brilliant Earth$25,977 NZD

30 data points across 13 retailers

14 retailers$4,090 NZD to $25,977 NZD

A
Cheapest Retailer
-
$4,090 NZD
$2,297 USD
A
Retailer 2
-
$5,219 NZD
£2,308 GBP
View
A
Retailer 3
-
$5,261 NZD
$2,955 USD
View
A
Retailer 4
-
$5,646 NZD
$3,171 USD
View
A
Retailer 5
-
$5,794 NZD
€3,099 EUR
View
A
Retailer 6
-
$7,833 NZD
ZAR 71,075 ZAR
View
A
Retailer 7
-
$9,478 NZD
$5,323 USD
View
A
Retailer 8
-
$9,917 NZD
$5,570 USD
View
A
Retailer 9
-
$9,928 NZD
$5,576 USD
View
A
Retailer 10
-
$10,524 NZD
£4,654 GBP
View
Retailer 11
-
$11,787 NZD
$6,620 USD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$12,902 NZD
$7,246 USD
View
Retailer 13
-
$17,237 NZD
A$14,894 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
20043916A · Oct 29
$25,977 NZD
$14,590 USD
View
13 more retailers have this diamond
Prices start from $4,090 NZDSave up to $21,888 NZD

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
$4,090 NZD