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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 €6,537 EUR
$7,332 USD
As of November 2, 2026
Save €22,894 EUR (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €29,431 EUR at Brilliant Earth · As of November 2, 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 16 retailers as of November 2, 2026, with prices from €6,537 to €29,431, a €22,894 spread on the same certified stone. Brilliant Earth lists it at €29,431. 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
Colour
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

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: €29,431 EUR|Low: €6,537 EUR|High: €30,501 EUR|Avg: €12,286 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 3, 2026
Retailer 3€6,537 EUR
Retailer 11€6,799 EUR
Retailer 5€7,362 EUR
Retailer 4€7,538 EUR
Retailer 15€7,583 EUR
Retailer 14€7,806 EUR
Retailer 7€8,320 EUR
Retailer 12€8,573 EUR
Retailer 9€8,784 EUR
Retailer 2€9,337 EUR
Retailer 8€12,365 EUR
Retailer 10€14,453 EUR
Retailer 13€21,490 EUR
Retailer 6€25,477 EUR
Brilliant Earth€29,431 EUR

43 data points across 15 retailers

16 retailers€6,537 EUR to €29,431 EUR

A
Cheapest Retailer
-
€6,537 EUR
$7,332 USD
B+
Retailer 2
-
€6,799 EUR
$7,626 USD
View
B+
Retailer 3
-
€7,362 EUR
$8,257 USD
View
B+
Retailer 4
-
€7,538 EUR
$8,455 USD
View
B+
Retailer 5
-
€7,583 EUR
$8,505 USD
View
B+
Retailer 6
-
€7,806 EUR
HK$68,400 HKD
View
Retailer 7
-
€8,320 EUR
$9,332 USD
View
Price last confirmed 21 days ago
B+
Retailer 8
-
€8,573 EUR
$9,616 USD
View
Retailer 9
-
€8,720 EUR
$9,780 USD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
€8,784 EUR
$9,852 USD
View
B+
Retailer 11
-
€9,337 EUR
£8,246 GBP
View
B
Retailer 12
-
€12,365 EUR
View
B
Retailer 13
-
€14,453 EUR
A$24,939 AUD
View
B
Retailer 14
-
€21,490 EUR
$24,103 USD
View
B
Retailer 15
-
€25,477 EUR
$28,575 USD
View
Most Expensive
B
Brilliant Earth
19039056A · Nov 2
€29,431 EUR
$33,010 USD
View
15 more retailers have this diamond
Prices start from €6,537 EURSave up to €22,894 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
€6,537 EUR