Diamonds

• Most valuable of Precious Stones
• Valuable assets which increase in Price
• Diamonds have characteristics such as Size, cut, colour and clarity

Tidyverse Diamond Data set

Is a large data set of over 50,000 diamonds which is available from the Tidyverse package. It provides 7 variables on 53940 cut diamonds in the US market:

## # A tibble: 5 x 7
##   carat cut     color clarity depth table price
##   <dbl> <ord>   <ord> <ord>   <dbl> <dbl> <int>
## 1 0.23  Ideal   E     SI2      61.5    55   326
## 2 0.21  Premium E     SI1      59.8    61   326
## 3 0.23  Good    E     VS1      56.9    65   327
## 4 0.290 Premium I     VS2      62.4    58   334
## 5 0.31  Good    J     SI2      63.3    58   335

Further information is available from: “ggplot2.tidyverse.org/diamonds.html”

Diamond Price calculations:

• Involve analysis of a multi-dimensional data space
• Which can be confusing and difficult to interpret

Diamonds are forever “Shiny app”

Our product allows you to price your diamonds in the comfort and safety of your home and have a guide price in order to be able to negotiate a sale.

• You can preview the Shiny app i it on: https://reza-mofidi.shinyapps.io/diamonds/

• You will need The weight of the diamond in carats: (between 0.55 to 4.5 carats)

• The cut of the diamond: Fair, good, very good, ideal, premium

• The colour of the diamond: D to J

• The clarity of the diamond I1, SI1, SI2, VS1, VS2, VSS1, VSS2, IF

The Shiny App (pun intended)

The app uses multivariate regression modelling to calculate the price of your diamond.

The price of the diamond will be plotted in a scatterogram.

To compare it with other +50,000 stones on which the model is based.

Note:

Diamonds above US$ 20,000 will will require in person valuation which can be arranged by appointment. Such stones are often traded at auction or in a diamond exchange and are not traded privately