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Heart|Lab Grown|IGI

4.51ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG815698179

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG815698179

Diamond specifications and retailer prices

From HK$41,764 HKD
As of November 3, 2026
Save HK$228,138 HKD (85%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$269,902 HKD at Do Amore Diamonds · As of November 3, 2026
View at Do Amore Diamonds

About this 4.51ct lab-grown heart diamond

This 4.51ct 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 LG815698179 or 815698179. Listed at 8 retailers as of November 3, 2026, with prices from HK$41,764 to HK$269,902, a HK$228,138 spread on the same certified stone. Do Amore Diamonds lists it at HK$269,902. 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

4.51
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815698179
Dimensions10.01 × 11.17 × 6.64 mm
L/W Ratio1.12
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
10.01 mm11.17 mm4.51 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815698179
Side View
Table 61.0%Crown 38.7°Girdle: ThickPavilion 38.5°Culet: NoneDepth 59.4%

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: Nov 3
Current: HK$269,902 HKD|Low: HK$41,764 HKD|High: HK$301,443 HKD|Avg: HK$108,312 HKD|-10.5%
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
Retailer 13
November 3, 2026
Retailer 2HK$41,764 HKD
Retailer 13HK$46,017 HKD
Retailer 6HK$49,932 HKD
Retailer 9HK$56,844 HKD
Retailer 7HK$57,056 HKD
Retailer 4HK$67,923 HKD
Retailer 11HK$70,332 HKD
Retailer 12HK$83,317 HKD
Retailer 8HK$102,202 HKD
Retailer 10HK$106,706 HKD
Retailer 3HK$138,458 HKD
Retailer 5HK$226,043 HKD
Do Amore DiamondsHK$269,902 HKD

26 data points across 13 retailers

8 retailersHK$41,764 HKD to HK$269,902 HKD

A
Cheapest Retailer
-
HK$41,764 HKD
A
Retailer 2
-
HK$49,932 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$56,844 HKD
View
A
Retailer 4
-
HK$57,056 HKD
View
A
Retailer 5
-
HK$70,332 HKD
View
B+
Retailer 6
-
HK$102,202 HKD
View
B+
Retailer 7
-
HK$106,706 HKD
View
Most Expensive
B
Do Amore Diamonds
27-F4538CA67 · Nov 3
HK$269,902 HKD
$34,400 USD
View
7 more retailers have this diamond
Prices start from HK$41,764 HKDSave up to HK$228,138 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
4.51ct Heart
HK$41,764 HKD