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Round|Lab Grown|IGI

4.05ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG780685527

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780685527

Diamond specifications and retailer prices

From $4,297 AUD
£2,376 GBP
As of October 30, 2026
Save $19,150 AUD (82%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $23,447 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.05ct lab-grown round diamond

This 4.05ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780685527 or 780685527. Listed at 6 retailers as of October 30, 2026, with prices from $4,297 to $23,447, a $19,150 spread on the same certified stone. Do Amore Diamonds lists it at $23,447. 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

4.05
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780685527
Dimensions10.38 × 10.41 × 6.19 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
10.38 mm10.41 mm4.05 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780685527
Side View
Table 58.0%Crown 33.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 59.6%

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 30
Current: $23,447 AUD|Low: $2,736 AUD|High: $28,913 AUD|Avg: $11,434 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 4$2,736 AUD
Retailer 10$4,297 AUD
Retailer 5$5,115 AUD
Retailer 13$5,928 AUD
Retailer 2$5,929 AUD
Retailer 15$5,948 AUD
Retailer 12$6,166 AUD
Retailer 7$9,432 AUD
Retailer 17$10,976 AUD
Retailer 16$11,171 AUD
Retailer 8$11,442 AUD
Retailer 11$11,746 AUD
Retailer 6$13,864 AUD
Retailer 3$16,845 AUD
Retailer 9$20,933 AUD
Do Amore Diamonds$23,447 AUD
Retailer 14$28,913 AUD

7 data points across 17 retailers

6 retailers$4,297 AUD to $23,447 AUD

A
Cheapest Retailer
-
$4,297 AUD
£2,376 GBP
A
Retailer 2
-
$5,928 AUD
$4,164 USD
View
A
Retailer 3
-
$5,929 AUD
$4,165 USD
View
A
Retailer 4
-
$6,166 AUD
$4,331 USD
View
B+
Retailer 5
-
$11,746 AUD
£6,497 GBP
View
Most Expensive
B
Do Amore Diamonds
27-5D9B58FE0 · Oct 31
$23,447 AUD
$16,470 USD
View
5 more retailers have this diamond
Prices start from $4,297 AUDSave up to $19,150 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
4.05ct Round
$4,297 AUD