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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 $425 CAD
$304 USD
As of October 29, 2026
Save $1,705 CAD (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,129 CAD at Reve Diamonds · As of October 30, 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 October 29, 2026, with prices from $425 to $2,129, a $1,705 spread on the same certified stone. Reve Diamonds lists it at $2,129. 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: Oct 29
Current: $857 CAD|Low: $408 CAD|High: $2,584 CAD|Avg: $1,118 CAD|+2.3%
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
Retailer 17
Reve Diamonds
October 31, 2026
Retailer 14$425 CAD
Retailer 8$474 CAD
Retailer 3$492 CAD
Retailer 15$527 CAD
Retailer 13$675 CAD
Retailer 2$740 CAD
Retailer 16$795 CAD
Retailer 1$857 CAD
Retailer 7$859 CAD
Retailer 10$935 CAD
Retailer 11$952 CAD
Retailer 9$1,000 CAD
Retailer 6$1,356 CAD
Retailer 5$1,369 CAD
Retailer 17$1,690 CAD
Retailer 12$1,760 CAD
Retailer 4$2,120 CAD
Reve Diamonds$2,129 CAD

37 data points across 18 retailers

20 retailers$425 CAD to $2,129 CAD

A
Cheapest Retailer
-
$425 CAD
$304 USD
A
Retailer 2
-
$474 CAD
$339 USD
View
Final sale: no returns
A
Retailer 3
-
$492 CAD
$352 USD
View
A
Retailer 4
-
$527 CAD
$377 USD
View
Retailer 5
-
$527 CAD
$377 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$675 CAD
£381 GBP
View
A
Retailer 7
-
$740 CAD
$530 USD
View
A
Retailer 8
-
$795 CAD
$569 USD
View
B+
Retailer 9
-
$857 CAD
€584 EUR
View
B+
Retailer 10
-
$859 CAD
$615 USD
View
B+
Retailer 11
-
$935 CAD
£527 GBP
View
B+
Retailer 12
-
$952 CAD
A$1,048 AUD
View
B+
Retailer 13
-
$1,000 CAD
$716 USD
View
B+
Retailer 14
-
$1,356 CAD
$971 USD
View
Retailer 15
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$1,369 CAD
$980 USD
View
Price last confirmed 10 days ago
B
Retailer 16
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$1,690 CAD
$1,210 USD
View
B
Retailer 17
-
$1,757 CAD
$1,258 USD
View
B
Retailer 18
-
$1,760 CAD
$1,260 USD
View
B
Retailer 19
-
$2,120 CAD
£1,195 GBP
View
Most Expensive
B
Reve Diamonds
D564D4A9A · Oct 30
$2,129 CAD
$1,524 USD
View
19 more retailers have this diamond
Prices start from $425 CADSave up to $1,705 CAD

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
$425 CAD