About WHITE DIAMOND CONTAINING BLACK MEDIUM DIAMOND
White Diamond Containing Black Medium Diamond (U+1F79B) is a Unicode other symbol from the Geometric Shapes Extended block. It resides on Plane 1 (SMP, Supplementary Multilingual Plane), has bidirectional class ON (other neutrals), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as 🞛 or 🞛. Because it is outside the Basic Multilingual Plane, proper font support is required; otherwise a fallback box may be shown.