Oval|Lab Grown|IGI

1.66ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG784644498

Certificate IGI LG784644498

Diamond specifications and retailer prices

From $435 USD
Save $5,555 USD (93%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,990 USD at Brilliant Earth
View at Brilliant Earth

About this 1.66ct lab-grown oval diamond

This 1.66ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784644498 or 784644498. Listed at 16 retailers, with prices from $435 to $5,990 at Brilliant Earth, a $5,555 spread on the same certified stone. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784644498
Dimensions9.69 × 6.48 × 4.13 mm
L/W Ratio1.50
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
9.69 mm6.48 mm1.66 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784644498
Side View
Table 60.0%Crown 37.2°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 63.7%

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 28
Current: $5,990 USD|Low: $410 USD|High: $6,530 USD|Avg: $2,239 USD|-8.3%
Brilliant Earth
Retailer 2
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Retailer 19
October 1, 2026
Retailer 19$435 USD
Retailer 16$487 USD
Retailer 3$574 USD
Retailer 8$680 USD
Retailer 18$694 USD
Retailer 5$765 USD
Retailer 2$901 USD
Retailer 6$983 USD
Retailer 4$1,392 USD
Retailer 14$1,573 USD
Retailer 11$1,819 USD
Retailer 15$1,915 USD
Retailer 12$2,214 USD
Retailer 17$3,195 USD
Retailer 10$3,452 USD
Retailer 7$3,860 USD
Retailer 9$4,137 USD
Retailer 13$4,340 USD
Brilliant Earth$5,990 USD

26 data points across 19 retailers

16 retailers$435 USD to $5,990 USD

A
Cheapest Retailer
-
$435 USD
A
Retailer 2
-
$487 USD
View
A
Retailer 3
-
$574 USD
View
A
Retailer 4
-
$680 USD
View
A
Retailer 5
-
$694 USD
View
A
Retailer 6
-
$765 USD
View
A
Retailer 7
-
$901 USD
€858 EUR
View
A
Retailer 8
-
$983 USD
View
B+
Retailer 9
-
$1,392 USD
View
B+
Retailer 10
-
$1,573 USD
View
B+
Retailer 11
-
$1,915 USD
View
B+
Retailer 12
-
$2,214 USD
£1,743 GBP
View
B
Retailer 13
-
$3,195 USD
View
B
Retailer 14
-
$3,860 USD
View
B
Retailer 15
-
$4,340 USD
View
Most Expensive
B
Brilliant Earth
18701648Y · Oct 1
$5,990 USD
View
15 more retailers have this diamond
Prices start from $435 USDSave up to $5,555 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
1.66ct Oval
$435 USD