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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 $2,940 USD
As of October 29, 2026
Save $13,530 USD (82%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $16,470 USD at Do Amore Diamonds · As of October 29, 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 29, 2026, with prices from $2,940 to $16,470, a $13,530 spread on the same certified stone. Do Amore Diamonds lists it at $16,470. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $16,470 USD|Low: $1,922 USD|High: $20,310 USD|Avg: $8,028 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
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Retailer 12
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Retailer 17
October 30, 2026
Retailer 4$1,922 USD
Retailer 13$2,940 USD
Retailer 2$3,018 USD
Retailer 5$3,593 USD
Retailer 12$4,164 USD
Retailer 15$4,178 USD
Retailer 11$4,331 USD
Retailer 7$6,625 USD
Retailer 17$7,710 USD
Retailer 16$7,847 USD
Retailer 8$8,038 USD
Retailer 10$8,251 USD
Retailer 6$9,739 USD
Retailer 3$11,832 USD
Retailer 9$14,704 USD
Do Amore Diamonds$16,470 USD
Retailer 14$20,310 USD

6 data points across 17 retailers

6 retailers$2,940 USD to $16,470 USD

A
Cheapest Retailer
-
$2,940 USD
A
Retailer 2
-
$3,018 USD
£2,376 GBP
View
A
Retailer 3
-
$4,164 USD
View
A
Retailer 4
-
$4,331 USD
View
B+
Retailer 5
-
$8,251 USD
£6,497 GBP
View
Most Expensive
B
Do Amore Diamonds
27-5D9B58FE0 · Oct 29
$16,470 USD
View
5 more retailers have this diamond
Prices start from $2,940 USDSave up to $13,530 USD

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
$2,940 USD