Oval|Lab Grown|IGI

3.78ct D FL Oval Lab Grown Diamond

EX • D/FL • IGI LG800684570

Certificate IGI LG800684570

Diamond specifications and retailer prices

From $3,111 USD
Save $17,919 USD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $30,330 USD at With Clarity
View at With Clarity

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800684570 or 800684570. Listed at 12 retailers, with a 576% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800684570
Dimensions12.50 × 8.58 × 5.27 mm
L/W Ratio1.46
Girdle conditionFaceted
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
12.50 mm8.58 mm3.78 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800684570
Side View
Table 60.0%Crown 35.5°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 61.4%

Caratlytics Score

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

Price History

Last verified: Sep 30
Current: $4,846 USD|Low: $2,388 USD|High: $24,150 USD|Avg: $8,453 USD|-6.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
September 29, 2026
Retailer 7$3,111 USD
Retailer 11$3,325 USD
Retailer 13$3,344 USD
Retailer 9$3,635 USD
Retailer 12$4,208 USD
Retailer 1$4,846 USD
Retailer 8$5,446 USD
Retailer 3$6,949 USD
Retailer 6$8,954 USD
Retailer 4$11,095 USD
Retailer 5$13,389 USD
Retailer 10$18,750 USD
Retailer 2$21,030 USD

19 data points across 13 retailers

12 retailers$3,111 USD to $21,030 USD

A
Cheapest Retailer
-
$3,111 USD
A
Retailer 2
-
$3,325 USD
View
A
Retailer 3
-
$3,344 USD
View
A
Retailer 4
-
$3,635 USD
View
A
Retailer 5
-
$4,208 USD
View
B+
Retailer 6
-
$4,846 USD
View
B+
Retailer 7
-
$5,446 USD
€5,187 EUR
View
B+
Retailer 8
-
$6,949 USD
View
Price last confirmed 73 days ago
B+
Retailer 9
-
$8,954 USD
£7,050 GBP
View
B
Retailer 10
-
$18,750 USD
View
B
Retailer 11
-
$21,030 USD
View
Most Expensive
B
With Clarity
800684570 · Jun 14
$30,330 USD
View
Price under review
11 more retailers have this diamond
Prices start from $3,111 USDSave up to $17,919 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
$3,111 USD