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Round|Lab Grown|IGI

20.35ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG733536946

Shape and cutting style on the report: Round brilliant

Certificate IGI LG733536946

Diamond specifications and retailer prices

From £8,197 GBP
As of October 30, 2026
Save £21,985 GBP (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £30,182 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 20.35ct lab-grown round diamond

This 20.35ct 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 LG733536946 or 733536946. Listed at 18 retailers as of October 29, 2026, with prices from £8,197 to £30,182, a £21,985 spread on the same certified stone. Brilliant Earth lists it at £30,182. 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

20.35
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733536946
Dimensions17.61 × 17.54 × 10.67 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.61 mm17.54 mm20.35 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733536946
Side View
Table 58.0%Crown 34.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £30,182 GBP|Low: £8,169 GBP|High: £31,032 GBP|Avg: £14,624 GBP|-2.7%
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
Retailer 16
Retailer 17
October 31, 2026
Retailer 11£8,197 GBP
Retailer 16£8,772 GBP
Retailer 14£8,896 GBP
Retailer 8£9,122 GBP
Retailer 6£9,271 GBP
Retailer 5£9,536 GBP
Retailer 4£10,175 GBP
Retailer 9£10,175 GBP
Retailer 12£10,176 GBP
Retailer 15£10,796 GBP
Retailer 3£10,852 GBP
Retailer 10£11,836 GBP
Retailer 2£17,050 GBP
Retailer 13£19,221 GBP
Retailer 17£20,708 GBP
Retailer 7£29,746 GBP
Brilliant Earth£30,182 GBP

34 data points across 17 retailers

18 retailers£8,197 GBP to £30,182 GBP

B+
Cheapest Retailer
-
£8,197 GBP
B+
Retailer 2
-
£8,772 GBP
$11,753 USD
View
Retailer 3
-
£8,896 GBP
$11,920 USD
View
Price last confirmed 13 days ago
B+
Retailer 4
-
£9,122 GBP
$12,223 USD
View
B+
Retailer 5
-
£9,271 GBP
$12,422 USD
View
B+
Retailer 6
-
£9,536 GBP
$12,777 USD
View
B+
Retailer 7
-
£10,175 GBP
$13,633 USD
View
Retailer 8
-
£10,175 GBP
$13,633 USD
View
Price last confirmed 19 days ago
B+
Retailer 9
-
£10,176 GBP
$13,635 USD
View
B+
Retailer 10
-
£10,796 GBP
$14,465 USD
View
B+
Retailer 11
-
£10,852 GBP
$14,540 USD
View
B+
Retailer 12
-
£11,836 GBP
View
B
Retailer 13
-
£14,648 GBP
$19,627 USD
View
Final sale: no returns
B
Retailer 14
-
£17,050 GBP
€21,757 EUR
View
Retailer 15
-
£19,221 GBP
A$39,621 AUD
View
Price last confirmed 9 days ago
B
Retailer 16
-
£20,708 GBP
$27,747 USD
View
B
Retailer 17
-
£29,746 GBP
$39,857 USD
View
Most Expensive
B
Brilliant Earth
15732884A · Oct 29
£30,182 GBP
$40,440 USD
View
17 more retailers have this diamond
Prices start from £8,197 GBPSave up to £21,985 GBP

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+
20.35ct Round
£8,197 GBP