A vuggy limonite is the matrix for a reticulated twin: A so-called snowflake form crystal cluster of lustrous and translucent cerussite. This colorless cerussite measures 3.3 cm across and the bridge girder twinning effect is very obvious. Very minor damage only, in 3 spots on the side, but the core is pristine and the reticulation eye-catching. Ex. Charlie Key.