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Oval|Lab Grown|IGI

1.66ct E VS1 Oval Lab Grown Diamond

EX • E/VS1 • IGI LG823666729

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG823666729

Diamond specifications and retailer prices

From $379 USD
As of October 29, 2026
Save $1,661 USD (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,040 USD at Brilliant Earth · As of October 30, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG823666729 or 823666729. Listed at 24 retailers as of October 29, 2026, with prices from $379 to $2,040, a $1,661 spread on the same certified stone. Brilliant Earth lists it at $2,040. 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823666729
Dimensions9.11 × 7.04 × 4.25 mm
L/W Ratio1.29
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.11 mm7.04 mm1.66 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823666729
Side View
Table 61.0%Crown 33.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.4%

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 29
Current: $2,040 USD|Low: $379 USD|High: $2,140 USD|Avg: $1,075 USD|-4.7%
Brilliant Earth
Retailer 2
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Retailer 22
October 31, 2026
Retailer 14$379 USD
Retailer 7$424 USD
Retailer 9$424 USD
Retailer 3$470 USD
Retailer 4$470 USD
Retailer 21$620 USD
Retailer 10$630 USD
Retailer 6$652 USD
Retailer 2$752 USD
Retailer 15$766 USD
Retailer 20$807 USD
Retailer 13$850 USD
Retailer 18$1,090 USD
Retailer 17$1,158 USD
Retailer 22$1,178 USD
Retailer 12$1,495 USD
Retailer 5$1,510 USD
Retailer 8$1,548 USD
Retailer 16$1,759 USD
Retailer 11$1,764 USD
Retailer 19$1,845 USD
Brilliant Earth$2,040 USD

28 data points across 22 retailers

24 retailers$379 USD to $2,040 USD

A
Cheapest Retailer
-
$379 USD
A
Retailer 2
-
$424 USD
View
Final sale: no returns
A
Retailer 3
-
$424 USD
View
A
Retailer 4
-
$470 USD
View
A
Retailer 5
-
$470 USD
View
A
Retailer 6
-
$620 USD
View
A
Retailer 7
-
$630 USD
View
A
Retailer 8
-
$652 USD
View
Retailer 9
-
$752 USD
€716 EUR
View
B+
Retailer 10
-
$766 USD
A$1,178 AUD
View
B+
Retailer 11
-
$807 USD
ZAR 13,041 ZAR
View
B+
Retailer 12
-
$850 USD
£669 GBP
View
B+
Retailer 13
-
$1,090 USD
A$1,677 AUD
View
Retailer 14
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$1,120 USD
View
Price last confirmed 52 days ago
B
Retailer 15
-
$1,158 USD
A$1,782 AUD
View
B
Retailer 16
-
$1,178 USD
View
Retailer 17
-
$1,435 USD
View
Price last confirmed 37 days ago
B
Retailer 18
-
$1,495 USD
SGD 2,020 SGD
View
B
Retailer 19
-
$1,510 USD
View
B
Retailer 20
-
$1,548 USD
View
B
Retailer 21
-
$1,759 USD
View
B
Retailer 22
-
$1,764 USD
View
B
Retailer 23
-
$1,845 USD
£1,453 GBP
View
Most Expensive
B
Brilliant Earth
21127214A · Oct 30
$2,040 USD
View
23 more retailers have this diamond
Prices start from $379 USDSave up to $1,661 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
$379 USD