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Oval|Lab Grown|IGI

1.51ct D SI2 Oval Lab Grown Diamond

ID • D/SI2 • IGI LG488132236

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG488132236

Diamond specifications and retailer prices

From £247 GBP
As of November 1, 2026
Save £628 GBP (72%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £874 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG488132236 or 488132236. Listed at 16 retailers as of November 1, 2026, with prices from £247 to £874, a £628 spread on the same certified stone. Brilliant Earth lists it at £874. 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
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488132236
Dimensions8.92 × 6.36 × 4.15 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.92 mm6.36 mm1.51 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488132236
Side View
Table 59.5%Crown 35.3°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 65.3%

Caratlytics Score

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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 1
Current: £874 GBP|Low: £178 GBP|High: £1,248 GBP|Avg: £493 GBP|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10£178 GBP
Retailer 6£247 GBP
Retailer 2£308 GBP
Retailer 5£321 GBP
Retailer 3£322 GBP
Retailer 9£383 GBP
Retailer 4£578 GBP
Retailer 8£699 GBP
Retailer 7£771 GBP
Brilliant Earth£874 GBP

43 data points across 10 retailers

16 retailers£247 GBP to £874 GBP

Retailer 1
-
£137 GBP
Price last confirmed 36 days ago
Retailer 2
-
£149 GBP
View
Price last confirmed 44 days ago
Retailer 3
-
£173 GBP
View
Price last confirmed 42 days ago
Retailer 4
-
£178 GBP
View
Price last confirmed 35 days ago
Retailer 5
-
£182 GBP
View
Price last confirmed 42 days ago
B+
Retailer 6
-
£247 GBP
View
A
Retailer 7
-
£308 GBP
View
A
Retailer 8
-
£321 GBP
View
A
Retailer 9
-
£322 GBP
View
B+
Retailer 10
-
£383 GBP
View
B+
Retailer 11
-
£475 GBP
View
Retailer 12
-
£571 GBP
View
Price last confirmed 37 days ago
B+
Retailer 13
-
£578 GBP
View
B
Retailer 14
-
£699 GBP
View
Retailer 15
-
£771 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
8639601A · Nov 6
£874 GBP
$1,170 USD
View
15 more retailers have this diamond
Prices start from £247 GBPSave up to £628 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
£247 GBP