The Diamond Throne is a 2003 role-playing game supplement published by Malhavoc Press for Arcana Unearthed.
Contents The Diamond Throne is a supplement in which the Diamond Throne setting is expanded with new prestige classes, monsters, and magic items alongside a gazetteer detailing its giant‑ruled lands, wondrous locales, and dangerous foes.https://index.rpg.net/display-entry.phtml?mainid=2003https://rpggeek.com/rpgitem/48399/the-diamond-throne
Reviews Backstab #47https://archive.org/details/backstab-047/page/n33/mode/2up Realms of Fantasyhttps://archive.org/details/realms-of-fantasy-v-10-n-05-2004-06/page/82/mode/2up RPGNow Downloader Monthly (Issue 9 - Sep 2003)https://rpggeek.com/rpgissuearticle/79083/feature-review-the-diamond-throne
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