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Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG732547933

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG732547933

Diamond specifications and retailer prices

From £149 GBP
$200 USD
As of October 29, 2026
Save £1,090 GBP (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,239 GBP at Brilliant Earth · As of October 29, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG732547933 or 732547933. Listed at 13 retailers as of October 29, 2026, with prices from £149 to £1,239, a £1,090 spread on the same certified stone. Brilliant Earth lists it at £1,239. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732547933
Dimensions8.91 × 6.49 × 4.12 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.91 mm6.49 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732547933
Side View
Table 56.0%Crown 34.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 63.5%

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: Oct 29
Current: £1,239 GBP|Low: £143 GBP|High: £1,284 GBP|Avg: £432 GBP|-3.5%
Brilliant Earth
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
October 30, 2026
Retailer 13£149 GBP
Retailer 6£173 GBP
Retailer 5£185 GBP
Retailer 14£185 GBP
Retailer 2£207 GBP
Retailer 15£322 GBP
Retailer 11£329 GBP
Retailer 8£339 GBP
Retailer 3£368 GBP
Retailer 7£377 GBP
Retailer 4£595 GBP
Retailer 12£597 GBP
Retailer 10£690 GBP
Retailer 9£870 GBP
Brilliant Earth£1,239 GBP

43 data points across 15 retailers

13 retailers£149 GBP to £1,239 GBP

A
Cheapest Retailer
-
£149 GBP
$200 USD
A
Retailer 2
-
£173 GBP
$232 USD
View
A
Retailer 3
-
£185 GBP
$248 USD
View
A
Retailer 4
-
£185 GBP
$248 USD
View
A
Retailer 5
-
£207 GBP
View
B+
Retailer 6
-
£322 GBP
$431 USD
View
A
Retailer 7
-
£339 GBP
View
A
Retailer 8
-
£368 GBP
$493 USD
View
A
Retailer 9
-
£377 GBP
$505 USD
View
B+
Retailer 10
-
£595 GBP
$797 USD
View
B+
Retailer 11
-
£597 GBP
$800 USD
View
B
Retailer 12
-
£870 GBP
View
Most Expensive
B
Brilliant Earth
15705245A · Oct 29
£1,239 GBP
$1,660 USD
View
12 more retailers have this diamond
Prices start from £149 GBPSave up to £1,090 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
£149 GBP