What is the difference between chalk and edible chalk?

Chalk refers to retail chalk that has added chemicals to make it more suitable for art use or gym chalk however edible chalk refers to natural chalk that has not been processed and comes directly from chalk mountains.
Chalk refers to retail chalk that has added chemicals to make it more suitable for art use or gym chalk however edible chalk refers to

Sugar Crafty Edible Chalk Pen [P14577] - $16.50. : www.cakestuff

Chalk pieces for food - Goods For Refugees

Cambridge Chalk - MUSEUM OF EDIBLE EARTH

37 Chalkineurope Edible chalk ideas

Edible chalk and clay around the world ⋆ Umuri

Is edible chalk safe to eat and does it really provide nutrients

HITT Premium Edible Chalk - Natural Most Crunchy Nigeria

Hitt Premium Edible Chalk - Natural Belgorod Edible Chalk for Eating 7 oz (200 GR) - Zero Additives Organic Russian Edible Chalk Chunks - Asmr Food

Greenlistsoap Chalk Edible, Chalk Belgorod 8Oz, (250 gr) Natural

Scented Edible Sidewalk Chalk Paint

Chalkboard cookies with edible chalk - Ashlee Marie - real fun

Edible chalk : KRAM edible Chalk chunks (lump) natural for eating