Collecting contemporary art I started with some of the younger artists. Although, having a son who's an artist, I was hesitant-I think he was a little anxious when I bought another young man's work. But it might have encouraged him in the long run.

The Graff Hallucination is a sculptural masterpiece; a celebration of the miracle of coloured diamonds. For many years I have thought about creating a truly remarkable watch that illustrates our all-consuming passion for diamonds. The Hallucination has made my diamond dream a reality.

Your eye becomes more mature. What you don't see the first time, you keep looking, and eventually you'll see it. And when you are confident with what your eye sees, you know you've got to have it.

I was always a little bit of a collector and a hoarder. And whenever I got involved in anything, whatever it was - even when I was a kid and I collected cigarette cards - I really got into it and had the most. So when it came to paintings, once I got the bug, I always wanted to buy something. But I really knew nothing about art.

I can't draw. I can't paint. But what I can do is tell somebody else what to do. I'm a creator. I can tell an artist what to do. I can be behind the artist. I have the eye, so I can move things around. I can put stones together. I can match them.

When there's an opportunity, some people pass it by. I've been lucky enough to recognise opportunities and every day, in my business, there's an opportunity somewhere - to buy, expand, design.

You learn about yourself when you're collecting art. You learn what you're capable of. After all, we're not speaking about pennies-we're speaking about vast sums of money. I do it on my own back without advice, so I've got the confidence to do it.