Double Helix Issue 38

Check out our gemstone poster and work out which is your favourite. Plus, we have a guide to help you find your own gemstones, and info on the cutting edge of diamond-making technology. And our intrepid writers have even found rocks from another planet, right here on Earth!

If you want more crystals, we’ve got you covered. You can make crystal snowflakes or crystal trees. And did you know there’s a special glow hidden inside quartz crystals? We show you how to see it!