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Round|Lab Grown|IGI

20.09ct G VS1 Round Lab Grown Diamond

EX • G/VS1 • IGI LG793633336

Shape and cutting style on the report: Round brilliant

Certificate IGI LG793633336

Diamond specifications and retailer prices

From $11,357 USD
£8,942 GBP
As of October 26, 2026
Save $15,936 USD (58%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $40,911 USD at Taylor and Hart · As of October 24, 2026
View at Taylor and Hart

About this 20.09ct lab-grown round diamond

This 20.09ct lab-grown round 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 LG793633336 or 793633336. Listed at 14 retailers as of October 26, 2026, with a 140% 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

20.09
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG793633336
Dimensions17.59 × 17.46 × 10.50 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.59 mm17.46 mm20.09 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG793633336
Side View
Table 62.0%Crown 34.8°Girdle: MediumPavilion 40.5°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $11,357 USD|Low: $11,339 USD|High: $41,622 USD|Avg: $18,968 USD|-3.4%
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
Taylor and Hart
October 26, 2026
Retailer 1$11,357 USD
Retailer 11$12,175 USD
Retailer 7$12,662 USD
Retailer 8$12,820 USD
Retailer 2$13,236 USD
Retailer 3$14,123 USD
Retailer 5$14,453 USD
Retailer 10$14,985 USD
Retailer 9$15,060 USD
Retailer 4$15,335 USD
Retailer 6$16,418 USD
Retailer 13$26,663 USD
Retailer 12$27,293 USD
Taylor and Hart$40,911 USD

34 data points across 14 retailers

14 retailers$11,357 USD to $27,293 USD

B+
Cheapest Retailer
-
$11,357 USD
£8,942 GBP
Retailer 2
-
$12,175 USD
View
Price last confirmed 10 days ago
Retailer 3
-
$12,662 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$12,820 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$13,236 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$14,123 USD
View
Price last confirmed 7 days ago
Retailer 7
-
$14,453 USD
View
Price last confirmed 20 days ago
B+
Retailer 8
-
$14,985 USD
View
Retailer 9
-
$15,060 USD
View
Price last confirmed 9 days ago
Retailer 10
-
$15,335 USD
View
Price last confirmed 6 days ago
B+
Retailer 11
-
$16,418 USD
£12,928 GBP
View
Retailer 12
-
$26,663 USD
A$41,020 AUD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$27,293 USD
View
Most Expensive
Taylor and Hart
7BH0SDC · Oct 24
$40,911 USD
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from $11,357 USDSave up to $15,936 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.

B+
20.09ct Round
$11,357 USD