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Oval|Lab Grown|IGI

1.66ct E IF Oval Lab Grown Diamond

ID • E/IF • IGI LG801609388

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG801609388

Diamond specifications and retailer prices

From $703 USD
As of October 25, 2026
Save $3,697 USD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,400 USD at Brilliant Earth · As of October 29, 2026
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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG801609388 or 801609388. Listed at 14 retailers as of October 25, 2026, with prices from $703 to $4,400, a $3,697 spread on the same certified stone. Brilliant Earth lists it at $4,400. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801609388
Dimensions9.36 × 6.44 × 4.15 mm
L/W Ratio1.45
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
9.36 mm6.44 mm1.66 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801609388
Side View
Table 56.0%Crown 38.1°Girdle: STK-THKPavilion 36.5°Culet: NoneDepth 64.4%

Caratlytics Score

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

Price History

Last verified: Oct 25
Current: $4,400 USD|Low: $251 USD|High: $4,400 USD|Avg: $1,217 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
October 24, 2026
Retailer 4$251 USD
Retailer 10$443 USD
Retailer 9$590 USD
Retailer 7$676 USD
Retailer 3$703 USD
Retailer 5$749 USD
Retailer 2$780 USD
Retailer 12$1,672 USD
Retailer 8$1,739 USD
Retailer 11$1,795 USD
Retailer 6$2,610 USD
Brilliant Earth$4,400 USD

35 data points across 12 retailers

14 retailers$703 USD to $4,400 USD

Retailer 1
-
$590 USD
Price last confirmed 13 days ago
Retailer 2
-
$676 USD
€644 EUR
View
Price last confirmed 7 days ago
A
Retailer 3
-
$703 USD
View
Retailer 4
-
$749 USD
ZAR 12,097 ZAR
View
Price last confirmed 7 days ago
Retailer 5
-
$780 USD
£614 GBP
View
Price last confirmed 7 days ago
Retailer 6
-
$938 USD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
$1,223 USD
View
Retailer 8
-
$1,464 USD
View
Price last confirmed 7 days ago
Retailer 9
-
$1,672 USD
View
Price last confirmed 8 days ago
Retailer 10
-
$1,739 USD
£1,369 GBP
View
Price last confirmed 10 days ago
Retailer 11
-
$1,795 USD
A$2,761 AUD
View
Price last confirmed 29 days ago
Retailer 12
-
$1,870 USD
View
Price last confirmed 7 days ago
Retailer 13
-
$2,610 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
19652006A · Oct 29
$4,400 USD
View
13 more retailers have this diamond
Prices start from $703 USDSave up to $3,697 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.66ct Oval
$703 USD