Diamond sizes

Published

September 12, 2022

Diamond

We have data about 53940 diamonds. Only 126 are larger than 2.5 carats. The distribution of the remainder is shown below:

From the polygon we can infer that most diamonds are under 1 carat.

Diamond Sizes by Cut

Premium and fair cuts seem to have a slightly higher average cuts, while ideal, good and very good cuts seem to have a similar cluster, mostly less than 1 carat.

Diamond sizes by color

From the chart, we can tell that Color I and J seems to have a higher carat diamonds than the other colors. There’s also a slightly upward trend as we go from color D to color J.

Diamond size by clarity

As seen in Figure 1, diamonds with lower clarity have higher carats.

Figure 1: Distribution of Diamond Sizes by Claristy

I1, SI2, and SI2 clarity diamonds tend to be bigger, as the clarity increases, the size of the diamond decreases.

Largest 20 Diamonds

# A tibble: 20 × 5
   carat cut       color price depth
   <dbl> <ord>     <ord> <int> <dbl>
 1  5.01 Fair      J     18018  65.5
 2  4.5  Fair      J     18531  65.8
 3  4.13 Fair      H     17329  64.8
 4  4.01 Premium   I     15223  61  
 5  4.01 Premium   J     15223  62.5
 6  4    Very Good I     15984  63.3
 7  3.67 Premium   I     16193  62.4
 8  3.65 Fair      H     11668  67.1
 9  3.51 Premium   J     18701  62.5
10  3.5  Ideal     H     12587  62.8
11  3.4  Fair      D     15964  66.8
12  3.24 Premium   H     12300  62.1
13  3.22 Ideal     I     12545  62.6
14  3.11 Fair      J      9823  65.9
15  3.05 Premium   E     10453  60.9
16  3.04 Very Good I     15354  63.2
17  3.04 Premium   I     18559  59.3
18  3.02 Fair      I     10577  65.2
19  3.01 Premium   I      8040  62.7
20  3.01 Premium   F      9925  62.2

Using label_comma()

We have data about 53,940 diamonds. About 0.23% are larger than 2.5 carats.

carat cut color clarity depth table price x y z
0.23 Ideal E SI2 61.5 55 326 3.95 3.98 2.43
0.21 Premium E SI1 59.8 61 326 3.89 3.84 2.31
0.23 Good E VS1 56.9 65 327 4.05 4.07 2.31
0.29 Premium I VS2 62.4 58 334 4.20 4.23 2.63
0.31 Good J SI2 63.3 58 335 4.34 4.35 2.75