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Round|Lab Grown|IGI

0.66ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG667451439

Shape and cutting style on the report: Round brilliant

Certificate IGI LG667451439

Diamond specifications and retailer prices

From $129 SGD
$101 USD
As of November 1, 2026
Save $1,041 SGD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,171 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 0.66ct lab-grown round diamond

This 0.66ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG667451439 or 667451439. Listed at 15 retailers as of November 1, 2026, with prices from $129 to $1,171, a $1,041 spread on the same certified stone. MOH London lists it at $1,171. 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

0.66
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG667451439
Dimensions5.63 × 5.60 × 3.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.63 mm5.60 mm0.66 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG667451439
Side View
Table 58.0%Crown 34.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.3%

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: $1,171 SGD|Low: $123 SGD|High: $1,185 SGD|Avg: $364 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 8$129 SGD
Retailer 4$143 SGD
Retailer 10$170 SGD
Retailer 11$170 SGD
Retailer 7$205 SGD
Retailer 3$207 SGD
Retailer 6$306 SGD
Retailer 2$309 SGD
Retailer 5$318 SGD
Retailer 9$409 SGD
Retailer 12$463 SGD
MOH London$1,171 SGD

43 data points across 12 retailers

15 retailers$129 SGD to $1,171 SGD

A
Cheapest Retailer
-
$129 SGD
$101 USD
A
Retailer 2
-
$143 SGD
$112 USD
View
Final sale: no returns
A
Retailer 3
-
$150 SGD
$117 USD
View
A
Retailer 4
-
$170 SGD
$133 USD
View
Retailer 5
-
$170 SGD
$133 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$205 SGD
$160 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$207 SGD
$162 USD
View
A
Retailer 8
-
$283 SGD
€211 EUR
View
A
Retailer 9
-
$306 SGD
€228 EUR
View
A
Retailer 10
-
$309 SGD
£190 GBP
View
B+
Retailer 11
-
$318 SGD
$249 USD
View
B+
Retailer 12
-
$409 SGD
$320 USD
View
B+
Retailer 13
-
$463 SGD
$362 USD
View
B+
Retailer 14
-
$513 SGD
$401 USD
View
Most Expensive
B
MOH London
LG667451439 · Nov 1
$1,171 SGD
£721 GBP
View
14 more retailers have this diamond
Prices start from $129 SGDSave up to $1,041 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
0.66ct Round
$129 SGD