This example visualizes six years of gemstone price data across multiple gem types using an interactive 3D bar chart. The visualization renders the dataset as a multi-series bar chart in three-dimensional space, with each bar’s height representing a yearly value. The code loads CSV data via `d3.csv`, parses it with a custom row function, and renders the chart using the `d3.x3d.chart.barChartMultiSeries` API, which integrates D3 with X3DOM for WebGL-based 3D graphics. The chart is displayed within an HTML div using D3’s selection and `.datum()` method.