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Heart|Lab Grown|IGI

20.50ct G VS1 Heart Lab Grown Diamond

ID • G/VS1 • IGI LG843673757

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG843673757

Diamond specifications and retailer prices

From HK$73,354 HKD
£7,362 GBP
As of November 2, 2026
Save HK$209,337 HKD (74%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$282,691 HKD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 20.5ct lab-grown heart diamond

This 20.5ct 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 LG843673757 or 843673757. Listed at 14 retailers as of October 31, 2026, with prices from HK$73,354 to HK$282,691, a HK$209,337 spread on the same certified stone. Taylor and Hart lists it at HK$282,691. 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

20.50
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843673757
Dimensions16.79 × 18.97 × 11.17 mm
L/W Ratio1.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.79 mm18.97 mm20.50 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843673757
Side View
Table 55.0%Crown 34.9°Girdle: MED-STKPavilion 38.6°Culet: NoneDepth 58.9%

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$97,494 HKD|Low: HK$73,332 HKD|High: HK$282,691 HKD|Avg: HK$130,544 HKD|+8.1%
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
Taylor and Hart
November 2, 2026
Retailer 6HK$73,354 HKD
Retailer 10HK$78,742 HKD
Retailer 12HK$81,889 HKD
Retailer 5HK$84,462 HKD
Retailer 3HK$85,600 HKD
Retailer 13HK$90,268 HKD
Retailer 4HK$91,335 HKD
Retailer 1HK$97,494 HKD
Retailer 9HK$98,420 HKD
Retailer 8HK$107,725 HKD
Retailer 7HK$172,769 HKD
Retailer 11HK$203,564 HKD
Retailer 2HK$261,272 HKD
Taylor and HartHK$282,691 HKD

15 data points across 14 retailers

14 retailersHK$73,354 HKD to HK$282,691 HKD

A
Cheapest Retailer
-
HK$73,354 HKD
£7,362 GBP
A
Retailer 2
-
HK$78,742 HKD
$10,036 USD
View
B+
Retailer 3
-
HK$81,889 HKD
$10,437 USD
View
B+
Retailer 4
-
HK$84,462 HKD
$10,765 USD
View
B+
Retailer 5
-
HK$85,600 HKD
$10,910 USD
View
B+
Retailer 6
-
HK$90,268 HKD
$11,505 USD
View
B+
Retailer 7
-
HK$91,335 HKD
$11,641 USD
View
B+
Retailer 8
-
HK$97,494 HKD
$12,426 USD
View
B+
Retailer 9
-
HK$98,420 HKD
$12,544 USD
View
B+
Retailer 10
-
HK$107,725 HKD
£10,811 GBP
View
B
Retailer 11
-
HK$172,769 HKD
A$33,877 AUD
View
B
Retailer 12
-
HK$203,564 HKD
$25,945 USD
View
B
Retailer 13
-
HK$261,272 HKD
$33,300 USD
View
Most Expensive
B
Taylor and Hart
TGOWP9E · Oct 31
HK$282,691 HKD
$36,030 USD
View
13 more retailers have this diamond
Prices start from HK$73,354 HKDSave up to HK$209,337 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
20.50ct Heart
HK$73,354 HKD