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Heart|Lab Grown|IGI

4.51ct E VS1 Heart Lab Grown Diamond

EX • E/VS1 • IGI LG671440062

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG671440062

Diamond specifications and retailer prices

From HK$8,999 HKD
$1,147 USD
As of October 31, 2026
Save HK$27,570 HKD (75%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$71,396 HKD at Do Amore Diamonds · As of October 30, 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 E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG671440062 or 671440062. Listed at 20 retailers as of October 30, 2026, with a 306% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG671440062
Dimensions9.43 × 11.30 × 6.83 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.43 mm11.30 mm4.51 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG671440062
Side View
Table 62.0%Crown 38.9°Girdle: THK-VTKPavilion 41.3°Culet: NoneDepth 60.4%

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 31
Current: HK$71,396 HKD|Low: HK$8,923 HKD|High: HK$71,396 HKD|Avg: HK$21,880 HKD
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
Retailer 14
Retailer 15
October 31, 2026
Retailer 14HK$8,923 HKD
Retailer 3HK$8,999 HKD
Retailer 6HK$9,321 HKD
Retailer 9HK$10,709 HKD
Retailer 7HK$11,125 HKD
Retailer 8HK$14,796 HKD
Retailer 11HK$19,063 HKD
Retailer 15HK$19,481 HKD
Retailer 10HK$21,904 HKD
Retailer 12HK$22,031 HKD
Retailer 4HK$28,327 HKD
Retailer 5HK$28,904 HKD
Retailer 2HK$29,226 HKD
Retailer 13HK$33,240 HKD
Do Amore DiamondsHK$71,396 HKD

43 data points across 15 retailers

20 retailersHK$8,999 HKD to HK$36,569 HKD

Retailer 1
-
HK$7,712 HKD
$983 USD
Price last confirmed 29 days ago
Retailer 2
-
HK$8,748 HKD
$1,115 USD
View
Price last confirmed 32 days ago
Retailer 3
-
HK$8,923 HKD
£896 GBP
View
Price last confirmed 14 days ago
A
Retailer 4
-
HK$8,999 HKD
$1,147 USD
View
Final sale: no returns
Retailer 5
-
HK$9,321 HKD
$1,188 USD
View
Price last confirmed 28 days ago
A
Retailer 6
-
HK$10,709 HKD
$1,365 USD
View
A
Retailer 7
-
HK$12,514 HKD
$1,595 USD
View
A
Retailer 8
-
HK$13,134 HKD
$1,674 USD
View
B+
Retailer 9
-
HK$14,796 HKD
£1,485 GBP
View
B+
Retailer 10
-
HK$19,063 HKD
A$3,738 AUD
View
Retailer 11
-
HK$19,293 HKD
$2,459 USD
View
Price last confirmed 30 days ago
B+
Retailer 12
-
HK$19,481 HKD
$2,483 USD
View
B+
Retailer 13
-
HK$21,904 HKD
ZAR 45,102 ZAR
View
Retailer 14
-
HK$22,031 HKD
A$4,320 AUD
View
Price last confirmed 9 days ago
B
Retailer 15
-
HK$28,327 HKD
$3,611 USD
View
B
Retailer 16
-
HK$28,904 HKD
$3,684 USD
View
B
Retailer 17
-
HK$29,226 HKD
A$5,731 AUD
View
Retailer 18
-
HK$33,240 HKD
£3,336 GBP
View
Price last confirmed 10 days ago
B
Retailer 19
-
HK$36,569 HKD
$4,661 USD
View
Most Expensive
Do Amore Diamonds
27-2D89F9AD6 · Oct 30
HK$71,396 HKD
$9,100 USD
View
Price under review
19 more retailers have this diamond
Prices start from HK$8,999 HKDSave up to HK$27,570 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$8,999 HKD