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Round|Lab Grown|IGI

25.03ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG803643886

Shape and cutting style on the report: Round brilliant

Certificate IGI LG803643886

Diamond specifications and retailer prices

From £17,325 GBP
As of October 30, 2026
Save £26,293 GBP (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £51,370 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 25.03ct lab-grown round diamond

This 25.03ct 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 LG803643886 or 803643886. Listed at 15 retailers as of October 29, 2026, with a 152% 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

25.03
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803643886
Dimensions18.71 × 18.63 × 11.54 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.71 mm18.63 mm25.03 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803643886
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.8%

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 30
Current: £23,227 GBP|Low: £17,267 GBP|High: £51,370 GBP|Avg: £30,771 GBP
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
Taylor and Hart
October 31, 2026
Retailer 10£17,325 GBP
Retailer 7£18,140 GBP
Retailer 3£19,555 GBP
Retailer 12£20,052 GBP
Retailer 9£20,184 GBP
Retailer 4£22,426 GBP
Retailer 14£22,884 GBP
Retailer 1£23,227 GBP
Retailer 8£23,698 GBP
Retailer 6£24,763 GBP
Retailer 2£33,665 GBP
Retailer 5£41,085 GBP
Retailer 13£43,443 GBP
Retailer 11£43,618 GBP
Taylor and Hart£51,370 GBP

38 data points across 15 retailers

15 retailers£17,325 GBP to £43,618 GBP

B+
Cheapest Retailer
-
£17,325 GBP
B+
Retailer 2
-
£18,140 GBP
$24,306 USD
View
B
Retailer 3
-
£19,555 GBP
$26,201 USD
View
B
Retailer 4
-
£20,052 GBP
$26,867 USD
View
B
Retailer 5
-
£20,184 GBP
$27,044 USD
View
B
Retailer 6
-
£22,426 GBP
$30,048 USD
View
Final sale: no returns
B
Retailer 7
-
£22,884 GBP
$30,662 USD
View
B
Retailer 8
-
£23,227 GBP
$31,122 USD
View
B
Retailer 9
-
£23,698 GBP
View
Retailer 10
-
£24,763 GBP
$33,180 USD
View
Price last confirmed 19 days ago
B
Retailer 11
-
£33,665 GBP
$45,108 USD
View
B
Retailer 12
-
£41,085 GBP
$55,050 USD
View
Retailer 13
-
£43,443 GBP
A$89,552 AUD
View
Price last confirmed 9 days ago
B
Retailer 14
-
£43,618 GBP
€55,660 EUR
View
Most Expensive
Taylor and Hart
M730BY7 · Oct 30
£51,370 GBP
$68,829 USD
View
Price under review
14 more retailers have this diamond
Prices start from £17,325 GBPSave up to £26,293 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+
25.03ct Round
£17,325 GBP