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Heart|Lab Grown|IGI

4.51ct E VS1 Heart Lab Grown Diamond

ID • E/VS1 • IGI LG840608217

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840608217

Diamond specifications and retailer prices

From HK$5,225 HKD
$666 USD
As of October 21, 2026
12 retailers carry this diamond
Most expensive: HK$26,010 HKD at Michael Trio · As of October 13, 2026
View at Michael Trio

About this 4.51ct lab-grown heart diamond

This 4.51ct lab-grown heart sits in the three to five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840608217 or 840608217. Listed at 12 retailers as of October 13, 2026. 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
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840608217
Dimensions10.42 × 11.34 × 6.72 mm
L/W Ratio1.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.42 mm11.34 mm4.51 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840608217
Side View
Table 67.0%Crown 36.4°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 59.3%

Caratlytics Score

No score right now
No retailer has confirmed this stone recently, so we are not scoring it. Prices below are as of the date shown.

Price History

Last verified: Oct 21
Current: HK$26,010 HKD|Low: HK$5,084 HKD|High: HK$30,339 HKD|Avg: HK$16,204 HKD|-2.1%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 22, 2026
Retailer 4HK$5,225 HKD
Retailer 2HK$5,228 HKD
Retailer 12HK$5,688 HKD
Retailer 3HK$9,493 HKD
Retailer 9HK$9,737 HKD
Retailer 7HK$13,065 HKD
Retailer 11HK$15,487 HKD
Retailer 6HK$15,495 HKD
Retailer 5HK$17,049 HKD
Retailer 13HK$19,434 HKD
Retailer 8HK$25,677 HKD
Michael TrioHK$26,010 HKD
Retailer 10HK$29,696 HKD

22 data points across 13 retailers

12 retailersHK$5,225 HKD to HK$26,010 HKD

Retailer 1
-
HK$5,225 HKD
$666 USD
Price last confirmed 9 days ago
Retailer 2
-
HK$5,228 HKD
£525 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
HK$5,688 HKD
$725 USD
View
Price last confirmed 10 days ago
Retailer 4
-
HK$9,493 HKD
$1,210 USD
View
Price last confirmed 7 days ago
Retailer 5
-
HK$9,737 HKD
€1,182 EUR
View
Price last confirmed 7 days ago
Retailer 6
-
HK$13,065 HKD
A$2,562 AUD
View
Price last confirmed 10 days ago
Retailer 7
-
HK$15,487 HKD
$1,974 USD
View
Price last confirmed 8 days ago
Retailer 8
-
HK$17,049 HKD
$2,173 USD
View
Price last confirmed 9 days ago
Retailer 9
-
HK$19,434 HKD
$2,477 USD
View
Price last confirmed 9 days ago
Retailer 10
-
HK$20,517 HKD
$2,615 USD
View
Price last confirmed 7 days ago
Retailer 11
-
HK$25,677 HKD
£2,577 GBP
View
Price last confirmed 10 days ago
Most Expensive
Michael Trio
9799880860 · Oct 13
HK$26,010 HKD
SGD 4,480 SGD
View
Price last confirmed 18 days ago
11 more retailers have this diamond

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.

4.51ct Heart
HK$5,225 HKD