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Round|Lab Grown|IGI

20.03ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG704515928

Shape and cutting style on the report: Round brilliant

Certificate IGI LG704515928

Diamond specifications and retailer prices

From £10,779 GBP
$14,443 USD
As of October 30, 2026
Save £21,455 GBP (67%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £48,892 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 20.03ct lab-grown round diamond

This 20.03ct 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 LG704515928 or 704515928. Listed at 16 retailers as of October 29, 2026, with a 199% 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

20.03
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG704515928
Dimensions17.59 × 17.46 × 10.53 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 mm20.03 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG704515928
Side View
Table 57.0%Crown 33.3°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.1%

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 30
Current: £48,556 GBP|Low: £10,779 GBP|High: £63,453 GBP|Avg: £23,082 GBP|-23.5%
Do Amore Diamonds
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
October 31, 2026
Retailer 12£10,779 GBP
Retailer 15£10,839 GBP
Retailer 9£11,099 GBP
Retailer 8£11,844 GBP
Retailer 5£12,509 GBP
Retailer 10£12,941 GBP
Retailer 13£13,006 GBP
Retailer 7£17,495 GBP
Retailer 6£20,091 GBP
Retailer 2£22,283 GBP
Retailer 4£27,326 GBP
Retailer 11£30,847 GBP
Retailer 3£32,234 GBP
Retailer 14£36,637 GBP
Do Amore Diamonds£48,556 GBP

35 data points across 15 retailers

16 retailers£10,779 GBP to £32,234 GBP

B+
Cheapest Retailer
-
£10,779 GBP
$14,443 USD
B+
Retailer 2
-
£10,839 GBP
$14,523 USD
View
B+
Retailer 3
-
£11,099 GBP
$14,871 USD
View
B+
Retailer 4
-
£11,844 GBP
$15,870 USD
View
B+
Retailer 5
-
£12,509 GBP
$16,761 USD
View
B+
Retailer 6
-
£12,941 GBP
$17,340 USD
View
B
Retailer 7
-
£13,006 GBP
$17,427 USD
View
B
Retailer 8
-
£17,495 GBP
$23,442 USD
View
Final sale: no returns
B
Retailer 9
-
£20,091 GBP
$26,920 USD
View
B
Retailer 10
-
£22,283 GBP
€28,435 EUR
View
Retailer 11
-
£27,326 GBP
A$56,328 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
£30,847 GBP
$41,332 USD
View
B
Retailer 13
-
£32,234 GBP
$43,190 USD
View
Retailer 14
-
£36,637 GBP
$49,090 USD
View
Price under review
Retailer 15
-
£48,556 GBP
$65,060 USD
View
Price under review
Most Expensive
Do Amore Diamonds
19-859306 · Oct 31
£48,892 GBP
$65,510 USD
View
Price under review
15 more retailers have this diamond
Prices start from £10,779 GBPSave up to £21,455 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+
20.03ct Round
£10,779 GBP