ruby 8000RUBY8000 RUBY8000 - Portal Universitas Indonesia DAFTAR RUBY8000. Rp 30.000. Detail Produk . RUBY8000 -UI (Seleksi Masuk UI) adalah ujian seleksi terpadu masukA ruby laser is a solid-state laser that uses a synthetic ruby crystal as its gain medium. The first working laser was a ruby laser made by Theodore H.