January 2022, Stone of the Day #31 – Gemstone Beach Black and White

The last stone in this Series comes from Gemstone Beach. It finished the polishing process on 22 December 2021. The white against the background of black made it stand out on the beach, along with the unusual shape of the light-coloured segments. The close-up photos reveal many interesting minor details, mostly crystals of both white and black.

A small thin stone, it is 3.5 cms long, 2 cms at its widest, and about 0.5 cms thick. Both of its largest sides are very smooth, except for one small crack, and there are a couple of small rough areas along the edge.

The other side of Stone #31.

Other black and white stones collected on Gemstone Beach in 2021, some of them amygdaloidal, some porphyry, some other kinds:

Amygdaloidal.

Porphyry.

Gemstone Beach, near the car park.

Gemstone Beach, looking south east.

Gemstone Beach, looking north west.

The Index to the January 2022 Stone of the Day Series is here.

Author: tumblestoneblog

Retired Academic, male, living in the New Zealand countryside near Whanganui with his wife as well as Jasper the dog, Fluffy the cat, Dancer and Penny, the horses, and a shed half-full of stones. Email john.tumblestone@gmail.com. View all posts by tumblestoneblog