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Radiant|Lab Grown|IGI

20.09ct G VS1 Radiant Lab Grown Diamond

EX • G/VS1 • IGI LG739534203

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

Certificate IGI LG739534203

Diamond specifications and retailer prices

From €6,563 EUR
$7,332 USD
As of October 30, 2026
Save €22,984 EUR (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €29,547 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 20.09ct lab-grown radiant diamond

This 20.09ct 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 LG739534203 or 739534203. Listed at 15 retailers as of October 30, 2026, with prices from €6,563 to €29,547, a €22,984 spread on the same certified stone. Brilliant Earth lists it at €29,547. 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

20.09
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739534203
Dimensions18.31 × 13.32 × 8.66 mm
L/W Ratio1.37
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.31 mm13.32 mm20.09 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739534203
Side View
Table 66.0%Crown 44°Girdle: ThickPavilion 35.5°Culet: NoneDepth 65.0%

Caratlytics Score

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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: Oct 30
Current: €29,547 EUR|Low: €6,563 EUR|High: €30,621 EUR|Avg: €12,325 EUR|-3.5%
Brilliant Earth
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
November 1, 2026
Retailer 3€6,563 EUR
Retailer 11€6,826 EUR
Retailer 5€7,391 EUR
Retailer 10€7,537 EUR
Retailer 4€7,568 EUR
Retailer 15€7,613 EUR
Retailer 14€7,837 EUR
Retailer 7€8,353 EUR
Retailer 12€8,607 EUR
Retailer 8€9,296 EUR
Retailer 9€12,415 EUR
Retailer 2€14,510 EUR
Retailer 13€21,574 EUR
Retailer 6€25,577 EUR
Brilliant Earth€29,547 EUR

41 data points across 15 retailers

15 retailers€6,563 EUR to €29,547 EUR

A
Cheapest Retailer
-
€6,563 EUR
$7,332 USD
A
Retailer 2
-
€6,826 EUR
$7,626 USD
View
B+
Retailer 3
-
€7,391 EUR
$8,257 USD
View
B+
Retailer 4
-
€7,537 EUR
$8,420 USD
View
B+
Retailer 5
-
€7,568 EUR
$8,455 USD
View
B+
Retailer 6
-
€7,613 EUR
$8,505 USD
View
B+
Retailer 7
-
€7,837 EUR
HK$68,400 HKD
View
Retailer 8
-
€8,353 EUR
$9,332 USD
View
Price last confirmed 20 days ago
B+
Retailer 9
-
€8,607 EUR
$9,616 USD
View
B+
Retailer 10
-
€9,296 EUR
£8,178 GBP
View
B
Retailer 11
-
€12,415 EUR
View
B
Retailer 12
-
€14,510 EUR
A$24,939 AUD
View
B
Retailer 13
-
€21,574 EUR
$24,103 USD
View
B
Retailer 14
-
€25,577 EUR
$28,575 USD
View
Most Expensive
B
Brilliant Earth
19039056A · Oct 31
€29,547 EUR
$33,010 USD
View
14 more retailers have this diamond
Prices start from €6,563 EURSave up to €22,984 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
20.09ct Radiant
€6,563 EUR