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Heart|Lab Grown|IGI

18.86ct G VS1 Heart Lab Grown Diamond

ID • G/VS1 • IGI LG712589605

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG712589605

Diamond specifications and retailer prices

From HK$54,219 HKD
£5,441 GBP
As of November 2, 2026
Save HK$171,609 HKD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$352,572 HKD at With Clarity · As of November 3, 2026
View at With Clarity

About this 18.86ct lab-grown heart diamond

This 18.86ct lab-grown heart sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG712589605 or 712589605. Listed at 16 retailers as of October 31, 2026, with a 317% 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

18.86
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG712589605
Dimensions18.72 × 16.43 × 10.41 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.72 mm16.43 mm18.86 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG712589605
Side View
Table 58.0%Crown 37.1°Girdle: MED-STKPavilion 37°Culet: NoneDepth 55.6%

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 2
Current: HK$82,332 HKD|Low: HK$54,219 HKD|High: HK$352,572 HKD|Avg: HK$125,225 HKD|-0.5%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
With Clarity
November 3, 2026
Retailer 11HK$54,219 HKD
Retailer 7HK$58,202 HKD
Retailer 5HK$60,525 HKD
Retailer 18HK$66,174 HKD
Retailer 17HK$67,084 HKD
Retailer 16HK$67,516 HKD
Retailer 2HK$70,904 HKD
Retailer 3HK$75,927 HKD
Retailer 14HK$76,327 HKD
Retailer 13HK$78,186 HKD
Retailer 8HK$80,619 HKD
Retailer 1HK$82,332 HKD
Retailer 15HK$104,507 HKD
Retailer 12HK$128,631 HKD
Retailer 4HK$169,264 HKD
Retailer 9HK$172,331 HKD
Retailer 6HK$225,828 HKD
Retailer 10HK$261,197 HKD
With ClarityHK$352,572 HKD

8 data points across 19 retailers

16 retailersHK$54,219 HKD to HK$225,828 HKD

A
Cheapest Retailer
-
HK$54,219 HKD
£5,441 GBP
A
Retailer 2
-
HK$58,202 HKD
$7,418 USD
View
A
Retailer 3
-
HK$60,525 HKD
$7,714 USD
View
A
Retailer 4
-
HK$66,174 HKD
$8,434 USD
View
A
Retailer 5
-
HK$67,084 HKD
$8,550 USD
View
A
Retailer 6
-
HK$67,516 HKD
$8,605 USD
View
A
Retailer 7
-
HK$70,904 HKD
View
B+
Retailer 8
-
HK$75,927 HKD
$9,677 USD
View
B+
Retailer 9
-
HK$76,327 HKD
$9,728 USD
View
B+
Retailer 10
-
HK$78,186 HKD
$9,965 USD
View
B+
Retailer 11
-
HK$82,332 HKD
£8,263 GBP
View
B+
Retailer 12
-
HK$104,507 HKD
ZAR 215,179 ZAR
View
B
Retailer 13
-
HK$128,631 HKD
A$25,222 AUD
View
B
Retailer 14
-
HK$169,264 HKD
$21,573 USD
View
B
Retailer 15
-
HK$225,828 HKD
$28,782 USD
View
Most Expensive
With Clarity
712589605 · Nov 3
HK$352,572 HKD
$44,936 USD
View
Price under review
15 more retailers have this diamond
Prices start from HK$54,219 HKDSave up to HK$171,609 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
18.86ct Heart
HK$54,219 HKD