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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 HK$1,193 HKD
$152 USD
As of November 2, 2026
Save HK$6,986 HKD (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$11,455 HKD 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 November 1, 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

How it works →
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 2
Current: HK$11,455 HKD|Low: HK$1,146 HKD|High: HK$11,612 HKD|Avg: HK$4,176 HKD|-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 9HK$1,193 HKD
Retailer 7HK$1,326 HKD
Retailer 12HK$1,381 HKD
Retailer 10HK$1,475 HKD
Retailer 4HK$1,993 HKD
Retailer 3HK$2,275 HKD
Retailer 2HK$2,897 HKD
Retailer 6HK$5,014 HKD
Retailer 11HK$5,241 HKD
Retailer 5HK$7,623 HKD
Retailer 8HK$8,178 HKD
Do Amore DiamondsHK$11,455 HKD

43 data points across 12 retailers

13 retailersHK$1,193 HKD to HK$8,178 HKD

A
Cheapest Retailer
-
HK$1,193 HKD
$152 USD
A
Retailer 2
-
HK$1,326 HKD
$169 USD
View
Final sale: no returns
A
Retailer 3
-
HK$1,381 HKD
$176 USD
View
A
Retailer 4
-
HK$1,475 HKD
$188 USD
View
A
Retailer 5
-
HK$1,993 HKD
$254 USD
View
B+
Retailer 6
-
HK$2,275 HKD
$290 USD
View
B+
Retailer 7
-
HK$2,897 HKD
£291 GBP
View
B
Retailer 8
-
HK$5,014 HKD
$639 USD
View
B
Retailer 9
-
HK$5,241 HKD
$668 USD
View
B
Retailer 10
-
HK$6,605 HKD
$842 USD
View
B
Retailer 11
-
HK$7,623 HKD
£765 GBP
View
B
Retailer 12
-
HK$8,178 HKD
$1,042 USD
View
Most Expensive
Do Amore Diamonds
27-9600C54C1 · Nov 1
HK$11,455 HKD
$1,460 USD
View
Price under review
12 more retailers have this diamond
Prices start from HK$1,193 HKDSave up to HK$6,986 HKD

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
HK$1,193 HKD