CaratHunter
Plans
Oval|Lab Grown|IGI

1.66ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG816625228

Certificate IGI LG816625228

Diamond specifications and retailer prices

From $463 USD
Save $5,557 USD (92%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,020 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 LG816625228 or 816625228. Listed at 15 retailers, with prices from $463 to $6,020 at Brilliant Earth, a $5,557 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 angle34.1°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816625228
Dimensions9.40 × 6.66 × 4.13 mm
L/W Ratio1.41
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
9.40 mm6.66 mm1.66 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816625228
Side View
Table 62.0%Crown 34.1°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.0%

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: Oct 1
Current: $6,020 USD|Low: $306 USD|High: $6,020 USD|Avg: $1,598 USD
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
Retailer 15
October 1, 2026
Retailer 7$306 USD
Retailer 11$463 USD
Retailer 14$780 USD
Retailer 10$811 USD
Retailer 15$845 USD
Retailer 6$846 USD
Retailer 5$870 USD
Retailer 9$1,134 USD
Retailer 2$1,234 USD
Retailer 13$1,684 USD
Retailer 12$1,709 USD
Retailer 3$1,789 USD
Retailer 8$1,908 USD
Retailer 4$4,360 USD
Brilliant Earth$6,020 USD

39 data points across 15 retailers

15 retailers$463 USD to $6,020 USD

A
Cheapest Retailer
-
$463 USD
B+
Retailer 2
-
$780 USD
View
B+
Retailer 3
-
$811 USD
View
A
Retailer 4
-
$840 USD
£661 GBP
View
B+
Retailer 5
-
$846 USD
€806 EUR
View
A
Retailer 6
-
$870 USD
ZAR 14,047 ZAR
View
B+
Retailer 7
-
$1,134 USD
View
B+
Retailer 8
-
$1,234 USD
View
B
Retailer 9
-
$1,373 USD
View
Price last confirmed 15 days ago
B
Retailer 10
-
$1,684 USD
View
B
Retailer 11
-
$1,709 USD
SGD 2,310 SGD
View
B
Retailer 12
-
$1,789 USD
View
B
Retailer 13
-
$1,908 USD
£1,502 GBP
View
B
Retailer 14
-
$4,360 USD
View
Most Expensive
B
Brilliant Earth
21123785A · Sep 28
$6,020 USD
View
14 more retailers have this diamond
Prices start from $463 USDSave up to $5,557 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
$463 USD