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Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG830676748

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG830676748

Diamond specifications and retailer prices

From €168 EUR
$188 USD
As of October 29, 2026
Save €879 EUR (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €1,047 EUR 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 LG830676748 or 830676748. Listed at 19 retailers as of October 29, 2026, with prices from €168 to €1,047, a €879 spread on the same certified stone. Brilliant Earth lists it at €1,047. 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 angle32.8°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830676748
Dimensions9.73 × 6.44 × 3.99 mm
L/W Ratio1.51
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.73 mm6.44 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830676748
Side View
Table 59.0%Crown 32.8°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: €1,047 EUR|Low: €168 EUR|High: €1,047 EUR|Avg: €522 EUR
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
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Retailer 18
October 31, 2026
Retailer 14€168 EUR
Retailer 8€188 EUR
Retailer 7€195 EUR
Retailer 17€209 EUR
Retailer 18€209 EUR
Retailer 12€233 EUR
Retailer 16€288 EUR
Retailer 2€365 EUR
Retailer 11€379 EUR
Retailer 6€437 EUR
Retailer 4€439 EUR
Retailer 5€671 EUR
Retailer 15€673 EUR
Retailer 9€719 EUR
Retailer 10€832 EUR
Retailer 13€981 EUR
Retailer 3€1,034 EUR
Brilliant Earth€1,047 EUR

30 data points across 18 retailers

19 retailers€168 EUR to €1,047 EUR

A
Cheapest Retailer
-
€168 EUR
$188 USD
A
Retailer 2
-
€188 EUR
$210 USD
View
Final sale: no returns
A
Retailer 3
-
€195 EUR
$218 USD
View
A
Retailer 4
-
€209 EUR
$233 USD
View
A
Retailer 5
-
€209 EUR
$233 USD
View
Retailer 6
-
€218 EUR
$244 USD
View
Price last confirmed 23 days ago
A
Retailer 7
-
€233 EUR
£205 GBP
View
B+
Retailer 8
-
€288 EUR
$322 USD
View
A
Retailer 9
-
€365 EUR
View
A
Retailer 10
-
€379 EUR
£333 GBP
View
A
Retailer 11
-
€437 EUR
$488 USD
View
A
Retailer 12
-
€439 EUR
$491 USD
View
B+
Retailer 13
-
€671 EUR
$750 USD
View
B
Retailer 14
-
€673 EUR
$752 USD
View
B+
Retailer 15
-
€719 EUR
$804 USD
View
Retailer 16
-
€832 EUR
$930 USD
View
Price last confirmed 12 days ago
B
Retailer 17
-
€981 EUR
£863 GBP
View
B
Retailer 18
-
€1,034 EUR
$1,156 USD
View
Most Expensive
B
Brilliant Earth
21155010A · Oct 29
€1,047 EUR
$1,170 USD
View
18 more retailers have this diamond
Prices start from €168 EURSave up to €879 EUR

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
€168 EUR