Obsidian Arrowhead Natural Volcanic Glass Collectible Crystal
These arrow heads are made of Obsidian.
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly without crystal growth.
Pure obsidian is usually dark in appearance though the colour varies depending on the presence of impurities. Iron and magnesium typically give the obsidian a dark green to brown to black colour. A very few samples are nearly colourless.
In some stones the inclusion of small white radially clustered crystals of cristobalite in the black glass produce a blotchy or flake pattern. It may contain patterns of gas bubbles remaining from the lava flow aligned along layers created as the molten rock was flowing before being cooled. These bubbles can produce interesting effects such as a golden or rainbow sheen.
One will be supplied at random.
Shipping Options (UK Mainland)
Orders placed before 2:00 p.m. GMT will be processed the same day (Monday-Saturday). Delivery options are selected at checkout.
Standard Delivery
- 2-3 business days.
- £2.95.
- FREE delivery over £40.
First Class Delivery
- 1-2 business days.
- £3.95.
Express Courier Delivery
- 24 hours.
- £7.99.
For shipping to locations outside of the UK mainland, see our full shipping policy.
Returns
Unopened goods may be returned for a full refund within 30 days of receipt of your order. For further details, see our full returns policy.
Phone
+44(0)1436 670806
Our Address
Curious Minds Science Ltd (Grasshopper Toys)
112 West Princes Street
Helensburgh
Argyll & Bute
G84 8XD
United Kingdom
