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Heart|Lab Grown|IGI

1.23ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG840623487

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840623487

Diamond specifications and retailer prices

From HK$3,201 HKD
As of November 5, 2026
Save HK$19,158 HKD (86%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$22,359 HKD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840623487 or 840623487. Listed at 11 retailers as of November 5, 2026, with prices from HK$3,201 to HK$22,359, a HK$19,158 spread on the same certified stone. Brilliant Earth lists it at HK$22,359. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840623487
Dimensions6.60 × 7.34 × 4.27 mm
L/W Ratio1.11
Girdle conditionFaceted
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
6.60 mm7.34 mm1.23 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840623487
Side View
Table 55.0%Crown 37.3°Girdle: MED-THKPavilion 36.9°Culet: NoneDepth 58.2%

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: Nov 5
Current: HK$3,421 HKD|Low: HK$3,201 HKD|High: HK$13,886 HKD|Avg: HK$8,184 HKD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 4HK$3,201 HKD
Retailer 5HK$3,350 HKD
Retailer 1HK$3,421 HKD
Retailer 10HK$5,382 HKD
Retailer 7HK$5,947 HKD
Retailer 3HK$6,457 HKD
Retailer 9HK$11,085 HKD
Retailer 2HK$12,082 HKD
Retailer 8HK$13,039 HKD
Retailer 6HK$13,886 HKD

2 data points across 10 retailers

11 retailersHK$3,201 HKD to HK$22,359 HKD

A
Cheapest Retailer
-
HK$3,201 HKD
Final sale: no returns
A
Retailer 2
-
HK$3,350 HKD
View
A
Retailer 3
-
HK$3,421 HKD
View
B+
Retailer 4
-
HK$5,382 HKD
View
B+
Retailer 5
-
HK$5,947 HKD
View
B+
Retailer 6
-
HK$6,457 HKD
View
B
Retailer 7
-
HK$11,085 HKD
View
B
Retailer 8
-
HK$12,082 HKD
View
B
Retailer 9
-
HK$13,039 HKD
View
B
Retailer 10
-
HK$13,886 HKD
View
Most Expensive
B
Brilliant Earth
22518259A · Nov 5
HK$22,359 HKD
$2,850 USD
View
10 more retailers have this diamond
Prices start from HK$3,201 HKDSave up to HK$19,158 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
1.23ct Heart
HK$3,201 HKD