CaratHunter
Plans
Heart|Lab Grown|IGI

20.51ct G VS1 Heart Lab Grown Diamond

VG • G/VS1 • IGI LG720595533

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG720595533

Diamond specifications and retailer prices

From €10,568 EUR
$11,814 USD
As of November 2, 2026
Save €25,223 EUR (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €35,791 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 20.51ct lab-grown heart diamond

This 20.51ct lab-grown heart sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG720595533 or 720595533. Listed at 14 retailers as of October 31, 2026, with prices from €10,568 to €35,791, a €25,223 spread on the same certified stone. Taylor and Hart lists it at €35,791. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

20.51
Carat
G
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.8°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720595533
Dimensions16.59 × 17.88 × 10.68 mm
L/W Ratio1.08
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.59 mm17.88 mm20.51 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720595533
Side View
Table 66.0%Crown 41.8°Girdle: VTK-ETKPavilion 38.5°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €23,118 EUR|Low: €10,146 EUR|High: €35,791 EUR|Avg: €15,794 EUR|-0.2%
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
Taylor and Hart
November 1, 2026
Retailer 10€10,568 EUR
Retailer 14€10,991 EUR
Retailer 3€11,171 EUR
Retailer 13€11,489 EUR
Retailer 4€11,836 EUR
Retailer 7€12,085 EUR
Retailer 2€12,260 EUR
Retailer 11€12,260 EUR
Retailer 9€13,007 EUR
Retailer 12€13,074 EUR
Retailer 6€14,196 EUR
Retailer 8€14,782 EUR
Retailer 1€23,118 EUR
Retailer 5€23,764 EUR
Taylor and Hart€35,791 EUR

16 data points across 15 retailers

14 retailers€10,568 EUR to €35,791 EUR

B+
Cheapest Retailer
-
€10,568 EUR
$11,814 USD
B+
Retailer 2
-
€10,991 EUR
$12,287 USD
View
B+
Retailer 3
-
€11,171 EUR
$12,488 USD
View
B+
Retailer 4
-
€11,489 EUR
$12,844 USD
View
B+
Retailer 5
-
€11,836 EUR
$13,231 USD
View
Final sale: no returns
B
Retailer 6
-
€12,085 EUR
$13,510 USD
View
B+
Retailer 7
-
€12,260 EUR
$13,705 USD
View
Retailer 8
-
€12,260 EUR
$13,705 USD
View
Price last confirmed 21 days ago
B
Retailer 9
-
€13,007 EUR
$14,541 USD
View
B
Retailer 10
-
€13,074 EUR
$14,615 USD
View
Retailer 11
-
€14,782 EUR
£13,011 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
€23,118 EUR
A$39,759 AUD
View
B
Retailer 13
-
€23,764 EUR
$26,566 USD
View
Most Expensive
B
Taylor and Hart
GW5JPQB · Oct 31
€35,791 EUR
$40,011 USD
View
13 more retailers have this diamond
Prices start from €10,568 EURSave up to €25,223 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.

B+
20.51ct Heart
€10,568 EUR