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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 $352 USD
As of October 30, 2026
Save $818 USD (70%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,170 USD 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG488132236 or 488132236. Listed at 15 retailers as of October 30, 2026, with prices from $352 to $1,170, a $818 spread on the same certified stone. Brilliant Earth lists it at $1,170. 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
Color
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: Oct 30
Current: $1,170 USD|Low: $238 USD|High: $1,720 USD|Avg: $688 USD|-32.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 10$238 USD
Retailer 7$352 USD
Retailer 9$434 USD
Retailer 6$439 USD
Retailer 2$472 USD
Retailer 8$512 USD
Retailer 4$827 USD
Retailer 5$935 USD
Retailer 3$1,033 USD
Brilliant Earth$1,170 USD

40 data points across 10 retailers

15 retailers$352 USD to $1,170 USD

Retailer 1
-
$184 USD
Price last confirmed 29 days ago
Retailer 2
-
$199 USD
View
Price last confirmed 37 days ago
Retailer 3
-
$231 USD
View
Price last confirmed 36 days ago
Retailer 4
-
$238 USD
View
Price last confirmed 28 days ago
Retailer 5
-
$244 USD
View
Price last confirmed 35 days ago
B+
Retailer 6
-
$352 USD
View
A
Retailer 7
-
$434 USD
View
B+
Retailer 8
-
$472 USD
£372 GBP
View
B+
Retailer 9
-
$512 USD
View
B+
Retailer 10
-
$676 USD
View
Retailer 11
-
$764 USD
View
Price last confirmed 30 days ago
Retailer 12
-
$827 USD
View
Price last confirmed 11 days ago
Retailer 13
-
$935 USD
View
Price last confirmed 9 days ago
B
Retailer 14
-
$1,033 USD
£813 GBP
View
Most Expensive
B
Brilliant Earth
8639601A · Oct 30
$1,170 USD
View
14 more retailers have this diamond
Prices start from $352 USDSave up to $818 USD

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
$352 USD