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Oval|Lab Grown|IGI

3.68ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG780665820

Certificate IGI LG780665820

Diamond specifications and retailer prices

From $2,548 USD
Save $17,932 USD (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $20,480 USD at Brilliant Earth
View at Brilliant Earth

About this 3.68ct lab-grown oval diamond

This 3.68ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780665820 or 780665820. Listed at 16 retailers, with prices from $2,548 to $20,480 at Brilliant Earth, a $17,932 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

3.68
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780665820
Dimensions12.36 × 8.51 × 5.39 mm
L/W Ratio1.45
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
12.36 mm8.51 mm3.68 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780665820
Side View
Table 61.0%Crown 35.7°Girdle: STK-THKPavilion 40.7°Culet: NoneDepth 63.3%

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 2
Current: $20,480 USD|Low: $2,329 USD|High: $23,510 USD|Avg: $9,210 USD|-12.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 12
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Retailer 20
October 2, 2026
Retailer 2$2,548 USD
Retailer 18$2,888 USD
Retailer 20$3,033 USD
Retailer 5$3,240 USD
Retailer 7$3,260 USD
Retailer 3$3,462 USD
Retailer 6$4,098 USD
Retailer 17$4,247 USD
Retailer 14$4,719 USD
Retailer 13$5,359 USD
Retailer 8$6,866 USD
Retailer 12$8,133 USD
Retailer 16$8,391 USD
Retailer 15$8,719 USD
Retailer 10$13,629 USD
Retailer 11$14,527 USD
Retailer 4$18,260 USD
Retailer 19$18,744 USD
Brilliant Earth$20,480 USD
Retailer 9$21,647 USD

25 data points across 20 retailers

16 retailers$2,548 USD to $20,480 USD

A
Cheapest Retailer
-
$2,548 USD
A
Retailer 2
-
$2,888 USD
View
A
Retailer 3
-
$3,033 USD
View
A
Retailer 4
-
$3,240 USD
View
A
Retailer 5
-
$3,260 USD
View
A
Retailer 6
-
$3,462 USD
View
A
Retailer 7
-
$4,098 USD
View
B+
Retailer 8
-
$4,247 USD
View
B+
Retailer 9
-
$4,719 USD
View
B+
Retailer 10
-
$5,359 USD
€5,104 EUR
View
B+
Retailer 11
-
$6,866 USD
View
Price last confirmed 73 days ago
B
Retailer 12
-
$8,391 USD
View
B+
Retailer 13
-
$8,719 USD
£6,865 GBP
View
B
Retailer 14
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$18,260 USD
View
B
Retailer 15
-
$18,744 USD
View
Most Expensive
B
Brilliant Earth
18577503Y · Oct 1
$20,480 USD
View
15 more retailers have this diamond
Prices start from $2,548 USDSave up to $17,932 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
3.68ct Oval
$2,548 USD