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Oval|Lab Grown|IGI

4.05ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG780662804

Certificate IGI LG780662804

Diamond specifications and retailer prices

From $3,412 USD
Save $17,078 USD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $20,490 USD at Brilliant Earth
View at Brilliant Earth

About this 4.05ct lab-grown oval diamond

This 4.05ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780662804 or 780662804. Listed at 15 retailers, with prices from $3,412 to $20,490 at Brilliant Earth, a $17,078 spread on the same certified stone. 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
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662804
Dimensions12.73 × 9.02 × 5.68 mm
L/W Ratio1.41
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
12.73 mm9.02 mm4.05 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662804
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $20,490 USD|Low: $2,521 USD|High: $20,540 USD|Avg: $8,631 USD|-0.2%
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
Retailer 14
Retailer 15
Retailer 16
October 1, 2026
Retailer 8$2,521 USD
Retailer 16$3,412 USD
Retailer 5$4,100 USD
Retailer 14$4,147 USD
Retailer 11$4,672 USD
Retailer 3$5,305 USD
Retailer 4$5,320 USD
Retailer 7$6,583 USD
Retailer 12$7,077 USD
Retailer 13$8,687 USD
Retailer 15$8,910 USD
Retailer 6$9,152 USD
Retailer 2$11,350 USD
Retailer 10$13,159 USD
Retailer 9$15,437 USD
Brilliant Earth$20,490 USD

29 data points across 16 retailers

15 retailers$3,412 USD to $20,490 USD

A
Cheapest Retailer
-
$3,412 USD
A
Retailer 2
-
$4,100 USD
View
A
Retailer 3
-
$4,147 USD
HK$32,400 HKD
View
A
Retailer 4
-
$4,683 USD
£3,687 GBP
View
A
Retailer 5
-
$5,305 USD
€5,052 EUR
View
A
Retailer 6
-
$5,320 USD
View
A
Retailer 7
-
$6,583 USD
A$10,128 AUD
View
B+
Retailer 8
-
$7,077 USD
ZAR 114,332 ZAR
View
B+
Retailer 9
-
$8,687 USD
£6,840 GBP
View
B+
Retailer 10
-
$8,910 USD
View
B+
Retailer 11
-
$9,152 USD
View
B+
Retailer 12
-
$11,350 USD
View
B
Retailer 13
-
$13,159 USD
View
B
Retailer 14
-
$15,437 USD
A$23,749 AUD
View
Most Expensive
B
Brilliant Earth
18951517A · Oct 1
$20,490 USD
View
14 more retailers have this diamond
Prices start from $3,412 USDSave up to $17,078 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.

A
4.05ct Oval
$3,412 USD