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Round|Lab Grown|IGI

31.23ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG779652783

Shape and cutting style on the report: Round brilliant

Certificate IGI LG779652783

Diamond specifications and retailer prices

From £18,410 GBP
As of October 30, 2026
Save £33,921 GBP (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £52,331 GBP at Yorxs · As of October 31, 2026
View at Yorxs

About this 31.23ct lab-grown round diamond

This 31.23ct 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 LG779652783 or 779652783. Listed at 8 retailers as of October 30, 2026, with prices from £18,410 to £52,331, a £33,921 spread on the same certified stone. Yorxs lists it at £52,331. 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

31.23
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779652783
Dimensions20.26 × 20.32 × 12.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
20.26 mm20.32 mm31.23 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779652783
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.2%

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: £18,410 GBP|Low: £18,348 GBP|High: £84,823 GBP|Avg: £39,740 GBP|-38.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
October 31, 2026
Retailer 1£18,410 GBP
Retailer 6£25,784 GBP
Retailer 7£26,810 GBP
Retailer 3£29,608 GBP
Retailer 5£30,852 GBP
Retailer 4£49,870 GBP
Retailer 2£50,807 GBP
Yorxs£52,331 GBP

38 data points across 8 retailers

8 retailers£18,410 GBP to £52,331 GBP

B+
Cheapest Retailer
-
£18,410 GBP
B
Retailer 2
-
£25,784 GBP
$34,548 USD
View
B
Retailer 3
-
£26,810 GBP
$35,922 USD
View
B
Retailer 4
-
£29,608 GBP
$39,671 USD
View
Retailer 5
-
£30,852 GBP
$41,338 USD
View
Price last confirmed 18 days ago
B
Retailer 6
-
£49,870 GBP
$66,820 USD
View
B
Retailer 7
-
£50,807 GBP
$68,076 USD
View
Most Expensive
B
Yorxs
530935969 · Oct 31
£52,331 GBP
€66,779 EUR
View
7 more retailers have this diamond
Prices start from £18,410 GBPSave up to £33,921 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+
31.23ct Round
£18,410 GBP