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 $297 USD
As of October 30, 2026
Save $1,043 USD (78%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,340 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG845615106 or 845615106. Listed at 9 retailers as of October 30, 2026, with prices from $297 to $1,340, a $1,043 spread on the same certified stone. Brilliant Earth lists it at $1,340. 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
Color
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

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,340 USD|Low: $281 USD|High: $1,340 USD|Avg: $666 USD|+2.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 5$297 USD
Retailer 7$311 USD
Retailer 4$475 USD
Retailer 3$501 USD
Retailer 8$519 USD
Retailer 2$899 USD
Retailer 9$1,088 USD
Retailer 6$1,272 USD
Brilliant Earth$1,340 USD

14 data points across 9 retailers

9 retailers$297 USD to $1,340 USD

A
Cheapest Retailer
-
$297 USD
Final sale: no returns
A
Retailer 2
-
$311 USD
£245 GBP
View
B+
Retailer 3
-
$475 USD
View
B+
Retailer 4
-
$501 USD
View
B+
Retailer 5
-
$519 USD
£409 GBP
View
B
Retailer 6
-
$899 USD
View
B
Retailer 7
-
$1,088 USD
£857 GBP
View
B
Retailer 8
-
$1,272 USD
View
Most Expensive
B
Brilliant Earth
22346932A · Oct 30
$1,340 USD
View
8 more retailers have this diamond
Prices start from $297 USDSave up to $1,043 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
$297 USD