CaratHunter
Plans
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 $540 AUD
$379 USD
As of November 1, 2026
Save $2,365 AUD (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,904 AUD at Brilliant Earth · As of October 31, 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 31, 2026, with prices from $540 to $2,904, a $2,365 spread on the same certified stone. Brilliant Earth lists it at $2,904. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,904 AUD|Low: $540 AUD|High: $3,047 AUD|Avg: $1,517 AUD|-4.7%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 1, 2026
Retailer 14$540 AUD
Retailer 7$604 AUD
Retailer 9$604 AUD
Retailer 3$669 AUD
Retailer 4$669 AUD
Retailer 21$883 AUD
Retailer 10$897 AUD
Retailer 6$928 AUD
Retailer 17$1,070 AUD
Retailer 15$1,090 AUD
Retailer 20$1,149 AUD
Retailer 13$1,200 AUD
Retailer 19$1,552 AUD
Retailer 18$1,649 AUD
Retailer 22$1,677 AUD
Retailer 12$2,128 AUD
Retailer 5$2,150 AUD
Retailer 8$2,204 AUD
Retailer 16$2,335 AUD
Retailer 11$2,512 AUD
Retailer 2$2,613 AUD
Brilliant Earth$2,904 AUD

28 data points across 22 retailers

24 retailers$540 AUD to $2,904 AUD

A
Cheapest Retailer
-
$540 AUD
$379 USD
A
Retailer 2
-
$604 AUD
$424 USD
View
Final sale: no returns
A
Retailer 3
-
$604 AUD
$424 USD
View
A
Retailer 4
-
$669 AUD
$470 USD
View
Retailer 5
-
$669 AUD
$470 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$883 AUD
$620 USD
View
A
Retailer 7
-
$897 AUD
$630 USD
View
A
Retailer 8
-
$928 AUD
$652 USD
View
A
Retailer 9
-
$1,070 AUD
€716 EUR
View
B+
Retailer 10
-
$1,090 AUD
View
B+
Retailer 11
-
$1,149 AUD
ZAR 13,041 ZAR
View
B+
Retailer 12
-
$1,200 AUD
£664 GBP
View
B+
Retailer 13
-
$1,552 AUD
View
Retailer 14
-
$1,595 AUD
$1,120 USD
View
Price last confirmed 53 days ago
B+
Retailer 15
-
$1,649 AUD
View
B
Retailer 16
-
$1,677 AUD
$1,178 USD
View
Retailer 17
-
$2,043 AUD
$1,435 USD
View
Price last confirmed 38 days ago
B
Retailer 18
-
$2,128 AUD
SGD 2,020 SGD
View
B
Retailer 19
-
$2,150 AUD
$1,510 USD
View
B
Retailer 20
-
$2,204 AUD
$1,548 USD
View
B
Retailer 21
-
$2,335 AUD
$1,640 USD
View
B
Retailer 22
-
$2,512 AUD
$1,764 USD
View
B
Retailer 23
-
$2,613 AUD
£1,445 GBP
View
Most Expensive
B
Brilliant Earth
21127214A · Oct 31
$2,904 AUD
$2,040 USD
View
23 more retailers have this diamond
Prices start from $540 AUDSave up to $2,365 AUD

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
$540 AUD