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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 $389 SGD
$304 USD
As of November 1, 2026
Save $1,560 SGD (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,949 SGD 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 $389 to $1,949, a $1,560 spread on the same certified stone. Reve Diamonds lists it at $1,949. 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
Colour
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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Price History

Last verified: Nov 1
Current: $848 SGD|Low: $373 SGD|High: $2,365 SGD|Avg: $1,032 SGD|+0.4%
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 2, 2026
Retailer 14$389 SGD
Retailer 8$433 SGD
Retailer 4$450 SGD
Retailer 15$482 SGD
Retailer 10$616 SGD
Retailer 3$678 SGD
Retailer 16$727 SGD
Retailer 11$784 SGD
Retailer 7$786 SGD
Retailer 1$848 SGD
Retailer 12$871 SGD
Retailer 6$1,241 SGD
Retailer 5$1,253 SGD
Retailer 2$1,547 SGD
Retailer 13$1,611 SGD
Retailer 9$1,929 SGD
Reve Diamonds$1,949 SGD

37 data points across 17 retailers

20 retailers$389 SGD to $1,949 SGD

A
Cheapest Retailer
-
$389 SGD
$304 USD
A
Retailer 2
-
$433 SGD
$339 USD
View
Final sale: no returns
A
Retailer 3
-
$450 SGD
$352 USD
View
A
Retailer 4
-
$482 SGD
$377 USD
View
Retailer 5
-
$482 SGD
$377 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
$616 SGD
£380 GBP
View
A
Retailer 7
-
$678 SGD
$530 USD
View
A
Retailer 8
-
$727 SGD
$569 USD
View
B+
Retailer 9
-
$784 SGD
€584 EUR
View
B+
Retailer 10
-
$786 SGD
$615 USD
View
B+
Retailer 11
-
$848 SGD
£522 GBP
View
B+
Retailer 12
-
$871 SGD
A$1,048 AUD
View
B+
Retailer 13
-
$915 SGD
$716 USD
View
B+
Retailer 14
-
$1,241 SGD
$971 USD
View
Retailer 15
-
$1,253 SGD
$980 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
$1,547 SGD
$1,210 USD
View
B
Retailer 17
-
$1,608 SGD
$1,258 USD
View
B
Retailer 18
-
$1,611 SGD
$1,260 USD
View
B
Retailer 19
-
$1,929 SGD
£1,188 GBP
View
Most Expensive
B
Reve Diamonds
D564D4A9A · Nov 1
$1,949 SGD
$1,524 USD
View
19 more retailers have this diamond
Prices start from $389 SGDSave up to $1,560 SGD

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
$389 SGD