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Oval|Lab Grown|IGI

1.66ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG627421853

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG627421853

Diamond specifications and retailer prices

From €272 EUR
$304 USD
As of November 1, 2026
Save €1,092 EUR (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €1,364 EUR at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG627421853 or 627421853. Listed at 20 retailers as of November 1, 2026, with prices from €272 to €1,364, a €1,092 spread on the same certified stone. Reve Diamonds lists it at €1,364. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.66
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627421853
Dimensions9.36 × 6.73 × 4.18 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.36 mm6.73 mm1.66 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627421853
Side View
Table 61.0%Crown 35°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.1%

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: Nov 1
Current: €1,350 EUR|Low: €261 EUR|High: €1,656 EUR|Avg: €723 EUR|-1.1%
Retailer 1
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
Reve Diamonds
November 1, 2026
Retailer 14€272 EUR
Retailer 8€303 EUR
Retailer 4€315 EUR
Retailer 15€337 EUR
Retailer 9€431 EUR
Retailer 3€474 EUR
Retailer 16€509 EUR
Retailer 11€549 EUR
Retailer 7€550 EUR
Retailer 10€594 EUR
Retailer 12€610 EUR
Retailer 6€869 EUR
Retailer 5€877 EUR
Retailer 2€1,083 EUR
Retailer 13€1,128 EUR
Retailer 1€1,350 EUR
Reve Diamonds€1,364 EUR

36 data points across 17 retailers

20 retailers€272 EUR to €1,364 EUR

A
Cheapest Retailer
-
€272 EUR
$304 USD
A
Retailer 2
-
€303 EUR
$339 USD
View
Final sale: no returns
A
Retailer 3
-
€315 EUR
$352 USD
View
A
Retailer 4
-
€337 EUR
$377 USD
View
Retailer 5
-
€337 EUR
$377 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
€431 EUR
£380 GBP
View
A
Retailer 7
-
€474 EUR
$530 USD
View
A
Retailer 8
-
€509 EUR
$569 USD
View
B+
Retailer 9
-
€549 EUR
View
B+
Retailer 10
-
€550 EUR
$615 USD
View
B+
Retailer 11
-
€594 EUR
£522 GBP
View
B+
Retailer 12
-
€610 EUR
A$1,048 AUD
View
B+
Retailer 13
-
€641 EUR
$716 USD
View
B+
Retailer 14
-
€869 EUR
$971 USD
View
Retailer 15
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€877 EUR
$980 USD
View
Price last confirmed 11 days ago
B
Retailer 16
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€1,083 EUR
$1,210 USD
View
B
Retailer 17
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€1,126 EUR
$1,258 USD
View
B
Retailer 18
-
€1,128 EUR
$1,260 USD
View
B
Retailer 19
-
€1,350 EUR
£1,188 GBP
View
Most Expensive
B
Reve Diamonds
D564D4A9A · Nov 1
€1,364 EUR
$1,524 USD
View
19 more retailers have this diamond
Prices start from €272 EURSave up to €1,092 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
€272 EUR