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Oval|Lab Grown|IGI

1.51ct F SI1 Oval Lab Grown Diamond

VG • F/SI1 • IGI LG825655667

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG825655667

Diamond specifications and retailer prices

From £194 GBP
As of November 6, 2026
Save £539 GBP (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £733 GBP at Taylor and Hart · As of November 6, 2026
View at Taylor and Hart

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG825655667 or 825655667. Listed at 11 retailers as of November 6, 2026, with prices from £194 to £733, a £539 spread on the same certified stone. Taylor and Hart lists it at £733. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825655667
Dimensions9.05 × 6.41 × 4.01 mm
L/W Ratio1.41
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.05 mm6.41 mm1.51 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825655667
Side View
Table 62.0%Crown 34.6°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £275 GBP|Low: £194 GBP|High: £733 GBP|Avg: £412 GBP|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Taylor and Hart
November 6, 2026
Retailer 8£194 GBP
Retailer 6£216 GBP
Retailer 1£275 GBP
Retailer 3£291 GBP
Retailer 7£355 GBP
Retailer 2£402 GBP
Retailer 5£697 GBP
Retailer 4£699 GBP
Taylor and Hart£733 GBP

16 data points across 9 retailers

11 retailers£194 GBP to £733 GBP

A
Cheapest Retailer
-
£194 GBP
Final sale: no returns
A
Retailer 2
-
£202 GBP
View
Retailer 3
-
£216 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£275 GBP
View
B+
Retailer 5
-
£291 GBP
View
A
Retailer 6
-
£355 GBP
View
B+
Retailer 7
-
£402 GBP
View
B
Retailer 8
-
£628 GBP
View
B
Retailer 9
-
£697 GBP
View
B
Retailer 10
-
£699 GBP
View
Most Expensive
B
Taylor and Hart
3ACSFXT · Nov 6
£733 GBP
$982 USD
View
10 more retailers have this diamond
Prices start from £194 GBPSave up to £539 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.

A
1.51ct Oval
£194 GBP