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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 $240 SGD
$188 USD
As of October 29, 2026
Save $1,255 SGD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,496 SGD 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 18 retailers as of October 29, 2026, with prices from $240 to $1,496, a $1,255 spread on the same certified stone. Brilliant Earth lists it at $1,496. 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,496 SGD|Low: $240 SGD|High: $1,513 SGD|Avg: $756 SGD
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
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 13$240 SGD
Retailer 7$268 SGD
Retailer 6$279 SGD
Retailer 16$298 SGD
Retailer 17$298 SGD
Retailer 11$333 SGD
Retailer 15$412 SGD
Retailer 2$541 SGD
Retailer 9$561 SGD
Retailer 5$624 SGD
Retailer 3$628 SGD
Retailer 4$959 SGD
Retailer 14$961 SGD
Retailer 8$1,027 SGD
Retailer 10$1,189 SGD
Retailer 12$1,401 SGD
Retailer 18$1,477 SGD
Brilliant Earth$1,496 SGD

30 data points across 18 retailers

18 retailers$240 SGD to $1,496 SGD

A
Cheapest Retailer
-
$240 SGD
$188 USD
A
Retailer 2
-
$268 SGD
$210 USD
View
Final sale: no returns
A
Retailer 3
-
$279 SGD
$218 USD
View
A
Retailer 4
-
$298 SGD
$233 USD
View
A
Retailer 5
-
$298 SGD
$233 USD
View
Retailer 6
-
$312 SGD
$244 USD
View
Price last confirmed 23 days ago
A
Retailer 7
-
$333 SGD
£205 GBP
View
B+
Retailer 8
-
$412 SGD
$322 USD
View
A
Retailer 9
-
$541 SGD
£333 GBP
View
A
Retailer 10
-
$624 SGD
$488 USD
View
A
Retailer 11
-
$628 SGD
$491 USD
View
B+
Retailer 12
-
$959 SGD
$750 USD
View
B
Retailer 13
-
$961 SGD
$752 USD
View
B+
Retailer 14
-
$1,027 SGD
$804 USD
View
Retailer 15
-
$1,189 SGD
$930 USD
View
Price last confirmed 12 days ago
B
Retailer 16
-
$1,401 SGD
£863 GBP
View
B
Retailer 17
-
$1,477 SGD
$1,156 USD
View
Most Expensive
B
Brilliant Earth
21155010A · Oct 29
$1,496 SGD
$1,170 USD
View
17 more retailers have this diamond
Prices start from $240 SGDSave up to $1,255 SGD

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
$240 SGD