Vivianite Sigloite and a worthwhile “hand”-sized display

and a worthwhile “hand”-sized display specimen of this classic material

black minerals or minerals of Myanmar

A delightful and eye-catching thumbnail specimen of these well-known pseudomorphs

A classic association specimen from one of the most well-known mines in Bolivia

If you take it in the sun (even in a shaded area)

Vivianite Sigloite and a worthwhile “hand”-sized displayHere we have an incredibly rare cluster of crystals from Tomokoni featuring thin, lustrous, gemmy, sharp "sword" shaped prisms intermixed with contrasting red argillaceous sandstone. The majority of the crystals are undamaged, though there are a few contacts here and there. The crystals show a slight blue hue in areas when rotated in the light, which is due to their smaller size. Specimen #VIVBOL81807