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Heart|Lab Grown|IGI

0.66ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG670409091

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG670409091

Diamond specifications and retailer prices

From $194 SGD
$152 USD
As of October 30, 2026
Save $1,138 SGD (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,866 SGD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 0.66ct lab-grown heart diamond

This 0.66ct lab-grown heart 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 LG670409091 or 670409091. Listed at 13 retailers as of October 30, 2026, with a 586% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.2°
Pavilion angle42.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670409091
Dimensions5.32 × 5.77 × 3.49 mm
L/W Ratio1.08
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
5.32 mm5.77 mm0.66 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG670409091
Side View
Table 64.0%Crown 37.2°Girdle: MED-THKPavilion 42.3°Culet: NoneDepth 60.5%

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 30
Current: $1,866 SGD|Low: $187 SGD|High: $1,892 SGD|Avg: $680 SGD|-1.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9$194 SGD
Retailer 7$216 SGD
Retailer 12$225 SGD
Retailer 10$240 SGD
Retailer 4$325 SGD
Retailer 3$371 SGD
Retailer 2$472 SGD
Retailer 6$817 SGD
Retailer 11$854 SGD
Retailer 5$1,242 SGD
Retailer 8$1,333 SGD
Do Amore Diamonds$1,866 SGD

43 data points across 12 retailers

13 retailers$194 SGD to $1,333 SGD

A
Cheapest Retailer
-
$194 SGD
$152 USD
A
Retailer 2
-
$216 SGD
$169 USD
View
Final sale: no returns
A
Retailer 3
-
$225 SGD
$176 USD
View
A
Retailer 4
-
$240 SGD
$188 USD
View
A
Retailer 5
-
$325 SGD
$254 USD
View
B+
Retailer 6
-
$371 SGD
$290 USD
View
B+
Retailer 7
-
$472 SGD
£291 GBP
View
B
Retailer 8
-
$817 SGD
$639 USD
View
B
Retailer 9
-
$854 SGD
$668 USD
View
B
Retailer 10
-
$1,076 SGD
$842 USD
View
B
Retailer 11
-
$1,242 SGD
£765 GBP
View
B
Retailer 12
-
$1,333 SGD
$1,042 USD
View
Most Expensive
Do Amore Diamonds
27-9600C54C1 · Nov 1
$1,866 SGD
$1,460 USD
View
Price under review
12 more retailers have this diamond
Prices start from $194 SGDSave up to $1,138 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 Heart
$194 SGD