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Radiant|Lab Grown|IGI

20.30ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG813655566

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG813655566

Diamond specifications and retailer prices

From €14,443 EUR
£12,755 GBP
As of November 2, 2026
Save €19,279 EUR (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €43,864 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 20.3ct lab-grown radiant diamond

This 20.3ct lab-grown radiant 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 LG813655566 or 813655566. Listed at 16 retailers as of November 1, 2026, with a 133% 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

20.30
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813655566
Dimensions18.72 × 13.05 × 8.90 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.72 mm13.05 mm20.30 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813655566
Side View
Table 67.0%Crown 34.9°Girdle: Slightly ThickPavilion 31.9°Culet: NoneDepth 68.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €19,862 EUR|Low: €7,888 EUR|High: €43,864 EUR|Avg: €19,860 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
Retailer 15
Taylor and Hart
November 3, 2026
Retailer 7€11,889 EUR
Retailer 8€14,443 EUR
Retailer 4€15,504 EUR
Retailer 3€15,792 EUR
Retailer 9€15,875 EUR
Retailer 12€16,854 EUR
Retailer 14€16,909 EUR
Retailer 11€17,785 EUR
Retailer 2€17,975 EUR
Retailer 6€17,984 EUR
Retailer 1€19,862 EUR
Retailer 5€24,600 EUR
Retailer 15€25,001 EUR
Retailer 13€29,496 EUR
Retailer 10€33,722 EUR
Taylor and Hart€43,864 EUR

17 data points across 16 retailers

16 retailers€14,443 EUR to €33,722 EUR

Retailer 1
-
€11,889 EUR
$13,335 USD
Price last confirmed 12 days ago
B
Retailer 2
-
€14,443 EUR
£12,755 GBP
View
B
Retailer 3
-
€15,504 EUR
$17,389 USD
View
B
Retailer 4
-
€15,792 EUR
$17,712 USD
View
B
Retailer 5
-
€15,875 EUR
$17,806 USD
View
B
Retailer 6
-
€16,854 EUR
$18,904 USD
View
B
Retailer 7
-
€16,909 EUR
$18,965 USD
View
B
Retailer 8
-
€17,785 EUR
$19,948 USD
View
B
Retailer 9
-
€17,975 EUR
$20,161 USD
View
B
Retailer 10
-
€17,984 EUR
$20,171 USD
View
B
Retailer 11
-
€19,862 EUR
£17,542 GBP
View
B
Retailer 12
-
€24,600 EUR
$27,591 USD
View
Final sale: no returns
B
Retailer 13
-
€25,001 EUR
$28,041 USD
View
B
Retailer 14
-
€29,496 EUR
View
B
Retailer 15
-
€33,722 EUR
A$58,189 AUD
View
Most Expensive
Taylor and Hart
YFN343Y · Oct 31
€43,864 EUR
$49,198 USD
View
Price under review
15 more retailers have this diamond
Prices start from €14,443 EURSave up to €19,279 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
20.30ct Radiant
€14,443 EUR