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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 €8,336 EUR
£7,362 GBP
As of November 2, 2026
Save €23,788 EUR (74%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €32,124 EUR 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 €8,336 to €32,124, a €23,788 spread on the same certified stone. Taylor and Hart lists it at €32,124. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €11,079 EUR|Low: €8,333 EUR|High: €32,124 EUR|Avg: €14,834 EUR|+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 6€8,336 EUR
Retailer 10€8,948 EUR
Retailer 12€9,305 EUR
Retailer 5€9,598 EUR
Retailer 3€9,727 EUR
Retailer 13€10,258 EUR
Retailer 4€10,379 EUR
Retailer 1€11,079 EUR
Retailer 9€11,184 EUR
Retailer 8€12,241 EUR
Retailer 7€19,633 EUR
Retailer 11€23,132 EUR
Retailer 2€29,690 EUR
Taylor and Hart€32,124 EUR

15 data points across 14 retailers

14 retailers€8,336 EUR to €32,124 EUR

A
Cheapest Retailer
-
€8,336 EUR
£7,362 GBP
A
Retailer 2
-
€8,948 EUR
$10,036 USD
View
B+
Retailer 3
-
€9,305 EUR
$10,437 USD
View
B+
Retailer 4
-
€9,598 EUR
$10,765 USD
View
B+
Retailer 5
-
€9,727 EUR
$10,910 USD
View
B+
Retailer 6
-
€10,258 EUR
$11,505 USD
View
B+
Retailer 7
-
€10,379 EUR
$11,641 USD
View
B+
Retailer 8
-
€11,079 EUR
$12,426 USD
View
B+
Retailer 9
-
€11,184 EUR
$12,544 USD
View
B+
Retailer 10
-
€12,241 EUR
£10,811 GBP
View
B
Retailer 11
-
€19,633 EUR
A$33,877 AUD
View
B
Retailer 12
-
€23,132 EUR
$25,945 USD
View
B
Retailer 13
-
€29,690 EUR
$33,300 USD
View
Most Expensive
B
Taylor and Hart
TGOWP9E · Oct 31
€32,124 EUR
$36,030 USD
View
13 more retailers have this diamond
Prices start from €8,336 EURSave up to €23,788 EUR

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
€8,336 EUR