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Round|Lab Grown|IGI

25.34ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG765634557

Shape and cutting style on the report: Round brilliant

Certificate IGI LG765634557

Diamond specifications and retailer prices

From £12,897 GBP
As of October 30, 2026
Save £27,927 GBP (68%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £40,825 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 25.34ct lab-grown round diamond

This 25.34ct 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 LG765634557 or 765634557. Listed at 18 retailers as of October 30, 2026, with prices from £12,897 to £40,825, a £27,927 spread on the same certified stone. Taylor and Hart lists it at £40,825. 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

25.34
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG765634557
Dimensions18.94 × 19.01 × 11.54 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
18.94 mm19.01 mm25.34 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG765634557
Side View
Table 57.0%Crown 34.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
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: £29,192 GBP|Low: £12,854 GBP|High: £51,882 GBP|Avg: £25,556 GBP|-43.3%
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
Retailer 14
Retailer 15
Taylor and Hart
October 31, 2026
Retailer 9£12,897 GBP
Retailer 12£14,906 GBP
Retailer 3£14,953 GBP
Retailer 11£17,036 GBP
Retailer 14£17,092 GBP
Retailer 2£17,291 GBP
Retailer 8£18,515 GBP
Retailer 7£23,753 GBP
Retailer 5£24,436 GBP
Retailer 4£27,190 GBP
Retailer 1£29,192 GBP
Retailer 6£30,858 GBP
Retailer 10£32,427 GBP
Retailer 13£32,551 GBP
Retailer 15£38,690 GBP
Taylor and Hart£40,825 GBP

34 data points across 16 retailers

18 retailers£12,897 GBP to £40,825 GBP

B+
Cheapest Retailer
-
£12,897 GBP
B+
Retailer 2
-
£14,906 GBP
$19,973 USD
View
B
Retailer 3
-
£14,953 GBP
$20,036 USD
View
B
Retailer 4
-
£17,036 GBP
$22,826 USD
View
B
Retailer 5
-
£17,092 GBP
$22,901 USD
View
Retailer 6
-
£17,291 GBP
$23,168 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
£17,291 GBP
$23,168 USD
View
B
Retailer 8
-
£18,515 GBP
View
Retailer 9
-
£23,753 GBP
$31,826 USD
View
Price last confirmed 72 days ago
Retailer 10
-
£24,436 GBP
$32,742 USD
View
Price last confirmed 40 days ago
Retailer 11
-
£26,973 GBP
$36,141 USD
View
Price last confirmed 37 days ago
Retailer 12
-
£27,190 GBP
$36,431 USD
View
Price last confirmed 37 days ago
B
Retailer 13
-
£29,192 GBP
€37,252 EUR
View
Retailer 14
-
£30,858 GBP
$41,346 USD
View
Price last confirmed 39 days ago
Retailer 15
-
£32,427 GBP
A$66,845 AUD
View
Price last confirmed 8 days ago
B
Retailer 16
-
£32,551 GBP
$43,615 USD
View
B
Retailer 17
-
£38,690 GBP
$51,840 USD
View
Most Expensive
B
Taylor and Hart
U98JGHT · Oct 30
£40,825 GBP
$54,701 USD
View
17 more retailers have this diamond
Prices start from £12,897 GBPSave up to £27,927 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+
25.34ct Round
£12,897 GBP