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Oval|Lab Grown|IGI

1.51ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG496102629

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG496102629

Diamond specifications and retailer prices

From £777 GBP
As of November 6, 2026
Save £1,496 GBP (66%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,711 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 top-tier cut grade and certified by IGI LG496102629 or 496102629. Listed at 13 retailers as of November 6, 2026, with a 193% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496102629
Dimensions9.16 × 6.45 × 4.05 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.16 mm6.45 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496102629
Side View
Table 55.0%Crown 34.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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: Nov 6
Current: £2,711 GBP|Low: £777 GBP|High: £4,186 GBP|Avg: £2,086 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5£777 GBP
Retailer 7£1,247 GBP
Retailer 10£1,357 GBP
Retailer 8£1,446 GBP
Retailer 2£1,968 GBP
Retailer 3£2,030 GBP
Retailer 9£2,273 GBP
Retailer 6£2,494 GBP
NZ Jewellers£2,711 GBP
Retailer 4£4,120 GBP

46 data points across 10 retailers

13 retailers£777 GBP to £2,273 GBP

B+
Cheapest Retailer
-
£777 GBP
B
Retailer 2
-
£1,247 GBP
View
B
Retailer 3
-
£1,357 GBP
View
B
Retailer 4
-
£1,396 GBP
View
Final sale: no returns
Retailer 5
-
£1,446 GBP
View
Price last confirmed 25 days ago
B
Retailer 6
-
£1,446 GBP
View
B
Retailer 7
-
£1,573 GBP
View
B
Retailer 8
-
£1,968 GBP
View
B
Retailer 9
-
£2,030 GBP
View
B
Retailer 10
-
£2,273 GBP
View
Retailer 11
-
£2,494 GBP
View
Price under review
Most Expensive
NZ Jewellers
5e71dafc-8239-4e00-9580-461675dac5d6 · Nov 5
£2,711 GBP
$3,629 USD
View
Price under review
11 more retailers have this diamond
Prices start from £777 GBPSave up to £1,496 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+
1.51ct Oval
£777 GBP