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Oval|Lab Grown|IGI

1.66ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG816612612

Certificate IGI LG816612612

Diamond specifications and retailer prices

From $486 USD
Save $5,534 USD (92%) vs most expensive(unlock to see where)
19 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 LG816612612 or 816612612. Listed at 19 retailers, with prices from $486 to $6,020 at Brilliant Earth, a $5,534 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 angle34.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816612612
Dimensions9.68 × 6.65 × 4.10 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
9.68 mm6.65 mm1.66 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816612612
Side View
Table 60.0%Crown 34.7°Girdle: THN-STKPavilion 40.2°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $6,020 USD|Low: $329 USD|High: $6,560 USD|Avg: $1,472 USD|-8.2%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 1, 2026
Retailer 11$329 USD
Retailer 6$445 USD
Retailer 15$486 USD
Retailer 7$545 USD
Retailer 10$552 USD
Retailer 14$605 USD
Retailer 12$758 USD
Retailer 2$846 USD
Retailer 17$882 USD
Retailer 9$927 USD
Retailer 8$1,246 USD
Retailer 5$1,247 USD
Retailer 16$1,390 USD
Retailer 3$1,763 USD
Retailer 13$1,941 USD
Retailer 18$2,003 USD
Retailer 19$2,060 USD
Retailer 4$4,360 USD
Brilliant Earth$6,020 USD

36 data points across 19 retailers

19 retailers$486 USD to $6,020 USD

B+
Retailer 1
-
$445 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$486 USD
View
B+
Retailer 3
-
$498 USD
View
B+
Retailer 4
-
$545 USD
View
B+
Retailer 5
-
$552 USD
View
B+
Retailer 6
-
$605 USD
View
B+
Retailer 7
-
$758 USD
View
B+
Retailer 8
-
$846 USD
€806 EUR
View
B+
Retailer 9
-
$884 USD
£696 GBP
View
B+
Retailer 10
-
$927 USD
ZAR 14,980 ZAR
View
Price last confirmed 13 days ago
B
Retailer 11
-
$1,246 USD
View
B
Retailer 12
-
$1,247 USD
View
B
Retailer 13
-
$1,390 USD
View
B
Retailer 14
-
$1,763 USD
View
B
Retailer 15
-
$1,941 USD
View
B
Retailer 16
-
$2,003 USD
£1,577 GBP
View
B
Retailer 17
-
$2,060 USD
View
C
Retailer 18
-
$4,360 USD
View
Most Expensive
C
Brilliant Earth
21018730A · Oct 1
$6,020 USD
View
18 more retailers have this diamond
Prices start from $486 USDSave up to $5,534 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.

B+
1.66ct Oval
$486 USD