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Heart|Lab Grown|IGI

1.67ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG642477401

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG642477401

Diamond specifications and retailer prices

From HK$1,899 HKD
$242 USD
As of October 30, 2026
Save HK$8,065 HKD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$14,828 HKD at Brilliant Earth · As of October 12, 2026
View at Brilliant Earth

About this 1.67ct lab-grown heart diamond

This 1.67ct lab-grown heart 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 LG642477401 or 642477401. Listed at 16 retailers as of October 30, 2026, with a 425% 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

1.67
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG642477401
Dimensions8.14 × 6.99 × 5.08 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.14 mm6.99 mm1.67 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG642477401
Side View
Table 60.0%Crown 35.4°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: HK$9,964 HKD|Low: HK$1,828 HKD|High: HK$15,221 HKD|Avg: HK$4,911 HKD|-34.5%
Brilliant Earth
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
October 31, 2026
Retailer 15HK$1,899 HKD
Retailer 10HK$2,118 HKD
Retailer 13HK$2,205 HKD
Retailer 5HK$2,354 HKD
Retailer 6HK$2,354 HKD
Retailer 9HK$3,027 HKD
Retailer 14HK$3,178 HKD
Retailer 7HK$4,449 HKD
Retailer 2HK$4,470 HKD
Retailer 8HK$4,682 HKD
Retailer 4HK$4,958 HKD
Retailer 12HK$5,900 HKD
Retailer 3HK$7,579 HKD
Retailer 11HK$9,496 HKD
Brilliant EarthHK$9,964 HKD

30 data points across 15 retailers

16 retailersHK$1,899 HKD to HK$9,964 HKD

A
Cheapest Retailer
-
HK$1,899 HKD
$242 USD
A
Retailer 2
-
HK$2,118 HKD
$270 USD
View
Final sale: no returns
A
Retailer 3
-
HK$2,205 HKD
$281 USD
View
A
Retailer 4
-
HK$2,354 HKD
$300 USD
View
A
Retailer 5
-
HK$2,354 HKD
$300 USD
View
A
Retailer 6
-
HK$3,027 HKD
£304 GBP
View
B+
Retailer 7
-
HK$3,178 HKD
$405 USD
View
Retailer 8
-
HK$4,449 HKD
$567 USD
View
Price last confirmed 14 days ago
B+
Retailer 9
-
HK$4,470 HKD
£449 GBP
View
B+
Retailer 10
-
HK$4,682 HKD
A$918 AUD
View
B+
Retailer 11
-
HK$4,958 HKD
$632 USD
View
B+
Retailer 12
-
HK$5,900 HKD
$752 USD
View
B
Retailer 13
-
HK$7,579 HKD
$966 USD
View
Retailer 14
-
HK$9,496 HKD
£953 GBP
View
Price last confirmed 10 days ago
B
Retailer 15
-
HK$9,964 HKD
$1,270 USD
View
Most Expensive
Brilliant Earth
14017756A · Oct 12
HK$14,828 HKD
$1,890 USD
View
Price last confirmed 18 days ago
15 more retailers have this diamond
Prices start from HK$1,899 HKDSave up to HK$8,065 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
1.67ct Heart
HK$1,899 HKD