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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 $10,462 AUD
$7,332 USD
As of November 2, 2026
Save $36,640 AUD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $47,102 AUD 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 $10,462 to $47,102, a $36,640 spread on the same certified stone. Brilliant Earth lists it at $47,102. 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: $47,102 AUD|Low: $10,462 AUD|High: $48,814 AUD|Avg: $19,663 AUD|-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$10,462 AUD
Retailer 11$10,882 AUD
Retailer 5$11,782 AUD
Retailer 4$12,064 AUD
Retailer 15$12,136 AUD
Retailer 14$12,493 AUD
Retailer 7$13,316 AUD
Retailer 12$13,721 AUD
Retailer 9$14,058 AUD
Retailer 2$14,943 AUD
Retailer 8$19,789 AUD
Retailer 10$23,131 AUD
Retailer 13$34,393 AUD
Retailer 6$40,773 AUD
Brilliant Earth$47,102 AUD

43 data points across 15 retailers

16 retailers$10,462 AUD to $47,102 AUD

A
Cheapest Retailer
-
$10,462 AUD
$7,332 USD
B+
Retailer 2
-
$10,882 AUD
$7,626 USD
View
B+
Retailer 3
-
$11,782 AUD
$8,257 USD
View
B+
Retailer 4
-
$12,064 AUD
$8,455 USD
View
B+
Retailer 5
-
$12,136 AUD
$8,505 USD
View
B+
Retailer 6
-
$12,493 AUD
HK$68,400 HKD
View
Retailer 7
-
$13,316 AUD
$9,332 USD
View
Price last confirmed 21 days ago
B+
Retailer 8
-
$13,721 AUD
$9,616 USD
View
Retailer 9
-
$13,955 AUD
$9,780 USD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
$14,058 AUD
$9,852 USD
View
B+
Retailer 11
-
$14,943 AUD
£8,246 GBP
View
B
Retailer 12
-
$19,789 AUD
€13,208 EUR
View
B
Retailer 13
-
$23,131 AUD
View
B
Retailer 14
-
$34,393 AUD
$24,103 USD
View
B
Retailer 15
-
$40,773 AUD
$28,575 USD
View
Most Expensive
B
Brilliant Earth
19039056A · Nov 2
$47,102 AUD
$33,010 USD
View
15 more retailers have this diamond
Prices start from $10,462 AUDSave up to $36,640 AUD

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
$10,462 AUD