Gemstar Diamonds. Proposed code: GEM. Issue price: $0.20. Principal activities: diamond exploration. Corporate: Monty House (chairman); Les Field (technical director); Anthony Short (non-executive director); Peter Hwang (non-executive director).http://www.gemstardiamonds.com.au (08) 9321 0477. The company is aiming to raise $6.5 million. The offer is not underwritten.