We think obsidian is absolutely delightful, however it is in our opinion a stone of truth and can help to raise awareness of negative patterns of thought and unhealthy patterns of behaviour. This isn't always so easy for some , however it is effective if you are on a journey.
Some say obsidian is good for grounding, but personally we don't agree, and if you have challenges with grounding then we would suggest avoiding this stone. The ancients used it as a scrying stone, and it's origins are in Mexico where some of the Gods and High Priests used it to astral travel. If you buy obsidian then keep it very well cleansed regularly with running water.
This weighs approx 55g and is approximately 0.75cm x 4cm x 1cm.