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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 $7,332 USD
As of October 30, 2026
Save $25,678 USD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $33,010 USD 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 $7,332 to $33,010, a $25,678 spread on the same certified stone. Brilliant Earth lists it at $33,010. 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

How it works →
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: $33,010 USD|Low: $7,332 USD|High: $34,210 USD|Avg: $13,770 USD|-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$7,332 USD
Retailer 11$7,626 USD
Retailer 5$8,257 USD
Retailer 10$8,420 USD
Retailer 4$8,455 USD
Retailer 15$8,505 USD
Retailer 14$8,755 USD
Retailer 7$9,332 USD
Retailer 12$9,616 USD
Retailer 8$10,385 USD
Retailer 9$13,871 USD
Retailer 2$16,210 USD
Retailer 13$24,103 USD
Retailer 6$28,575 USD
Brilliant Earth$33,010 USD

41 data points across 15 retailers

15 retailers$7,332 USD to $33,010 USD

A
Cheapest Retailer
-
$7,332 USD
A
Retailer 2
-
$7,626 USD
View
B+
Retailer 3
-
$8,257 USD
View
B+
Retailer 4
-
$8,420 USD
View
B+
Retailer 5
-
$8,455 USD
View
B+
Retailer 6
-
$8,505 USD
View
B+
Retailer 7
-
$8,755 USD
HK$68,400 HKD
View
Retailer 8
-
$9,332 USD
View
Price last confirmed 19 days ago
B+
Retailer 9
-
$9,616 USD
View
B+
Retailer 10
-
$10,385 USD
£8,178 GBP
View
B
Retailer 11
-
$13,871 USD
€13,210 EUR
View
B
Retailer 12
-
$16,210 USD
A$24,939 AUD
View
B
Retailer 13
-
$24,103 USD
View
B
Retailer 14
-
$28,575 USD
View
Most Expensive
B
Brilliant Earth
19039056A · Oct 31
$33,010 USD
View
14 more retailers have this diamond
Prices start from $7,332 USDSave up to $25,678 USD

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
$7,332 USD