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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 €339 EUR
$379 USD
As of October 29, 2026
Save €1,487 EUR (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €1,826 EUR 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 29, 2026, with prices from €339 to €1,826, a €1,487 spread on the same certified stone. Brilliant Earth lists it at €1,826. 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

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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: €1,826 EUR|Low: €339 EUR|High: €1,915 EUR|Avg: €960 EUR|-4.7%
Brilliant Earth
Retailer 2
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Retailer 22
November 1, 2026
Retailer 14€339 EUR
Retailer 7€380 EUR
Retailer 9€380 EUR
Retailer 3€421 EUR
Retailer 4€421 EUR
Retailer 21€555 EUR
Retailer 10€564 EUR
Retailer 6€584 EUR
Retailer 16€673 EUR
Retailer 15€685 EUR
Retailer 20€723 EUR
Retailer 2€754 EUR
Retailer 18€976 EUR
Retailer 17€1,037 EUR
Retailer 22€1,054 EUR
Retailer 12€1,338 EUR
Retailer 5€1,352 EUR
Retailer 8€1,386 EUR
Retailer 13€1,468 EUR
Retailer 11€1,579 EUR
Retailer 19€1,652 EUR
Brilliant Earth€1,826 EUR

28 data points across 22 retailers

24 retailers€339 EUR to €1,826 EUR

A
Cheapest Retailer
-
€339 EUR
$379 USD
A
Retailer 2
-
€380 EUR
$424 USD
View
Final sale: no returns
A
Retailer 3
-
€380 EUR
$424 USD
View
A
Retailer 4
-
€421 EUR
$470 USD
View
A
Retailer 5
-
€421 EUR
$470 USD
View
A
Retailer 6
-
€555 EUR
$620 USD
View
A
Retailer 7
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€564 EUR
$630 USD
View
A
Retailer 8
-
€584 EUR
$652 USD
View
A
Retailer 9
-
€673 EUR
View
B+
Retailer 10
-
€685 EUR
A$1,178 AUD
View
B+
Retailer 11
-
€723 EUR
ZAR 13,041 ZAR
View
B+
Retailer 12
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€754 EUR
£664 GBP
View
B+
Retailer 13
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€976 EUR
A$1,677 AUD
View
Retailer 14
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€1,003 EUR
$1,120 USD
View
Price last confirmed 52 days ago
B+
Retailer 15
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€1,037 EUR
A$1,782 AUD
View
B
Retailer 16
-
€1,054 EUR
$1,178 USD
View
Retailer 17
-
€1,284 EUR
$1,435 USD
View
Price last confirmed 37 days ago
B
Retailer 18
-
€1,338 EUR
SGD 2,020 SGD
View
B
Retailer 19
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€1,352 EUR
$1,510 USD
View
B
Retailer 20
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€1,386 EUR
$1,548 USD
View
B
Retailer 21
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€1,468 EUR
$1,640 USD
View
B
Retailer 22
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€1,579 EUR
$1,764 USD
View
B
Retailer 23
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€1,652 EUR
£1,453 GBP
View
Most Expensive
B
Brilliant Earth
21127214A · Oct 31
€1,826 EUR
$2,040 USD
View
23 more retailers have this diamond
Prices start from €339 EURSave up to €1,487 EUR

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
€339 EUR