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Oval|Lab Grown|IGI

1.66ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG783637744

Certificate IGI LG783637744

Diamond specifications and retailer prices

From $839 USD
Save $5,151 USD (86%) vs most expensive(unlock to see where)
10 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 LG783637744 or 783637744. Listed at 10 retailers, with prices from $839 to $5,990 at Brilliant Earth, a $5,151 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 angle35.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783637744
Dimensions9.37 × 6.69 × 4.15 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
9.37 mm6.69 mm1.66 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783637744
Side View
Table 62.0%Crown 35.4°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.0%

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: $5,990 USD|Low: $792 USD|High: $6,940 USD|Avg: $2,767 USD|-13.7%
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
September 30, 2026
Retailer 2$839 USD
Retailer 11$860 USD
Retailer 10$1,255 USD
Retailer 3$1,395 USD
Retailer 13$1,427 USD
Retailer 9$1,598 USD
Retailer 4$1,807 USD
Retailer 7$2,186 USD
Retailer 14$2,210 USD
Retailer 12$3,810 USD
Retailer 8$4,340 USD
Retailer 5$4,543 USD
Retailer 6$5,441 USD
Brilliant Earth$5,990 USD

19 data points across 14 retailers

10 retailers$839 USD to $5,990 USD

A
Cheapest Retailer
-
$839 USD
A
Retailer 2
-
$860 USD
View
B+
Retailer 3
-
$1,255 USD
View
B+
Retailer 4
-
$1,374 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$1,395 USD
€1,329 EUR
View
Price last confirmed 111 days ago
B+
Retailer 6
-
$1,598 USD
View
B
Retailer 7
-
$2,186 USD
£1,721 GBP
View
B
Retailer 8
-
$3,810 USD
View
B
Retailer 9
-
$4,340 USD
View
Most Expensive
B
Brilliant Earth
21402610Y · Oct 1
$5,990 USD
View
9 more retailers have this diamond
Prices start from $839 USDSave up to $5,151 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
$839 USD