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Oval|Lab Grown|IGI

3.78ct D IF Oval Lab Grown Diamond

ID • D/IF • IGI LG720566351

Certificate IGI LG720566351

Diamond specifications and retailer prices

From $2,206 USD
Save $10,104 USD (82%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $12,310 USD at Brilliant Earth
View at Brilliant Earth

About this 3.78ct lab-grown oval diamond

This 3.78ct 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 LG720566351 or 720566351. Listed at 23 retailers, with prices from $2,206 to $12,310 at Brilliant Earth, a $10,104 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

3.78
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720566351
Dimensions12.44 × 8.90 × 5.50 mm
L/W Ratio1.40
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
12.44 mm8.90 mm3.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720566351
Side View
Table 61.0%Crown 35.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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: Oct 1
Current: $12,310 USD|Low: $1,675 USD|High: $14,320 USD|Avg: $5,128 USD|-14.0%
Brilliant Earth
Retailer 2
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Retailer 22
October 1, 2026
Retailer 2$2,206 USD
Retailer 5$2,451 USD
Retailer 16$2,455 USD
Retailer 10$2,772 USD
Retailer 13$2,790 USD
Retailer 17$3,197 USD
Retailer 8$3,565 USD
Retailer 18$3,846 USD
Retailer 7$4,343 USD
Retailer 9$4,430 USD
Retailer 22$5,168 USD
Retailer 19$5,212 USD
Retailer 4$5,988 USD
Retailer 15$6,279 USD
Retailer 20$6,608 USD
Retailer 14$6,657 USD
Retailer 11$6,845 USD
Retailer 6$8,003 USD
Retailer 12$8,073 USD
Retailer 3$8,665 USD
Retailer 21$9,738 USD
Brilliant Earth$12,310 USD

42 data points across 22 retailers

23 retailers$2,206 USD to $12,310 USD

A
Cheapest Retailer
-
$2,206 USD
A
Retailer 2
-
$2,451 USD
View
A
Retailer 3
-
$2,455 USD
View
A
Retailer 4
-
$2,772 USD
View
A
Retailer 5
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$2,790 USD
HK$21,800 HKD
View
A
Retailer 6
-
$3,204 USD
£2,523 GBP
View
A
Retailer 7
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$3,337 USD
£2,627 GBP
View
Price last confirmed 21 days ago
A
Retailer 8
-
$3,565 USD
€3,395 EUR
View
A
Retailer 9
-
$3,846 USD
View
A
Retailer 10
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$4,343 USD
£3,420 GBP
View
A
Retailer 11
-
$4,430 USD
View
B+
Retailer 12
-
$5,168 USD
A$7,951 AUD
View
B+
Retailer 13
-
$5,212 USD
ZAR 84,208 ZAR
View
B+
Retailer 14
-
$5,988 USD
View
B+
Retailer 15
-
$6,279 USD
View
Price last confirmed 11 days ago
B+
Retailer 16
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$6,608 USD
£5,203 GBP
View
B+
Retailer 17
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$6,657 USD
View
B+
Retailer 18
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$6,845 USD
View
B+
Retailer 19
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$8,003 USD
View
B+
Retailer 20
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$8,073 USD
SGD 10,909 SGD
View
B+
Retailer 21
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$8,842 USD
View
B
Retailer 22
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$9,738 USD
A$14,982 AUD
View
Most Expensive
B
Brilliant Earth
15368147A · Oct 1
$12,310 USD
View
22 more retailers have this diamond
Prices start from $2,206 USDSave up to $10,104 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
3.78ct Oval
$2,206 USD