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Heart|Lab Grown|IGI

3.99ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG846663142

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG846663142

Diamond specifications and retailer prices

From HK$37,149 HKD
$4,735 USD
As of October 31, 2026
Save HK$112,939 HKD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$150,088 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.99ct lab-grown heart diamond

This 3.99ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846663142 or 846663142. Listed at 9 retailers as of October 29, 2026, with prices from HK$37,149 to HK$150,088, a HK$112,939 spread on the same certified stone. Brilliant Earth lists it at HK$150,088. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.99
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663142
Dimensions9.88 × 10.61 × 6.39 mm
L/W Ratio1.07
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
9.88 mm10.61 mm3.99 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663142
Side View
Table 59.0%Crown 36.9°Girdle: THK-VTKPavilion 39.7°Culet: NoneDepth 60.2%

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: Oct 31
Current: HK$71,168 HKD|Low: HK$37,149 HKD|High: HK$79,105 HKD|Avg: HK$57,375 HKD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 7HK$37,149 HKD
Retailer 2HK$43,840 HKD
Retailer 6HK$45,497 HKD
Retailer 5HK$48,722 HKD
Retailer 4HK$56,889 HKD
Retailer 1HK$71,168 HKD
Retailer 8HK$77,618 HKD
Retailer 3HK$79,105 HKD

7 data points across 8 retailers

9 retailersHK$37,149 HKD to HK$150,088 HKD

A
Cheapest Retailer
-
HK$37,149 HKD
$4,735 USD
B+
Retailer 2
-
HK$43,840 HKD
£4,400 GBP
View
B+
Retailer 3
-
HK$45,497 HKD
$5,799 USD
View
B+
Retailer 4
-
HK$48,722 HKD
$6,210 USD
View
B+
Retailer 5
-
HK$56,889 HKD
$7,251 USD
View
B+
Retailer 6
-
HK$71,168 HKD
€8,639 EUR
View
B+
Retailer 7
-
HK$77,618 HKD
$9,893 USD
View
B
Retailer 8
-
HK$79,105 HKD
£7,939 GBP
View
Most Expensive
B
Brilliant Earth
22305682A · Oct 29
HK$150,088 HKD
$19,130 USD
View
8 more retailers have this diamond
Prices start from HK$37,149 HKDSave up to HK$112,939 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
3.99ct Heart
HK$37,149 HKD