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Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG845615106

Shape and cutting style on the report: Oval modified brilliant

Certificate IGI LG845615106

Diamond specifications and retailer prices

From £195 GBP
$261 USD
As of October 31, 2026
Save £805 GBP (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,000 GBP at Brilliant Earth · As of October 30, 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 very-good cut grade and certified by IGI LG845615106 or 845615106. Listed at 11 retailers as of October 30, 2026, with prices from £195 to £1,000, a £805 spread on the same certified stone. Brilliant Earth lists it at £1,000. 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
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle30.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845615106
Dimensions8.74 × 5.92 × 3.75 mm
L/W Ratio1.48
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.74 mm5.92 mm1.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845615106
Side View
Table 65.0%Crown 36.1°Girdle: MED-THKPavilion 30.9°Culet: NoneDepth 63.3%

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: Oct 31
Current: £1,000 GBP|Low: £195 GBP|High: £1,000 GBP|Avg: £496 GBP|+2.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 4£195 GBP
Retailer 9£222 GBP
Retailer 11£232 GBP
Retailer 8£355 GBP
Retailer 7£374 GBP
Retailer 5£388 GBP
Retailer 2£669 GBP
Retailer 6£671 GBP
Retailer 3£812 GBP
Retailer 10£950 GBP
Brilliant Earth£1,000 GBP

14 data points across 11 retailers

11 retailers£195 GBP to £1,000 GBP

A
Cheapest Retailer
-
£195 GBP
$261 USD
A
Retailer 2
-
£222 GBP
$297 USD
View
Final sale: no returns
A
Retailer 3
-
£232 GBP
View
B+
Retailer 4
-
£355 GBP
$475 USD
View
B+
Retailer 5
-
£374 GBP
$501 USD
View
B+
Retailer 6
-
£388 GBP
View
Retailer 7
-
£669 GBP
$896 USD
View
B
Retailer 8
-
£671 GBP
$899 USD
View
B
Retailer 9
-
£812 GBP
View
B
Retailer 10
-
£950 GBP
$1,272 USD
View
Most Expensive
B
Brilliant Earth
22346932A · Oct 30
£1,000 GBP
$1,340 USD
View
10 more retailers have this diamond
Prices start from £195 GBPSave up to £805 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
£195 GBP