Clay dragon

The Dragon Clay Dragon can be found in the basement of the Crafting Guild which require a slayer level of 31 to kill. This Dragon is the weakest Dragon to drop dragon bones. It's sometimes set as a slayer task from medium and high level slayer masters. The Clay Dragon seems to drop gems very often for it's low combat level. It's even possible to recieve an uncut onyx, but this is even rarer then getting a Visage from an iron dragon. The best method to kill them for lower levels, it to use water spells. Higher leveled players may melee them without porblems. Do not forget your antidragon-shield! They still breath fire hiting quite high for their combat levels. After they rach about 50HP, you must finish them off with a bucket of water (this will empty your bucket, but you can refill it upstairs).

100%
1 Dragon bones

1 Soft clay

5 Clay

Weapons and Armour
Dragon Medhelm (very rare)

Dragon Spear (extremly rare)

Steel Boots (semi-rare)

Rune Medhelm (rare)

Weapons and armour from bronze (common) up to Mithril (uncommon)

Yew Longbow (uncommon)

Yew Shortbow

Maple Longbow

Hardleather Body (common)

Other
Various Crafting Tools (common)

Uncut sapphire

Uncut emerald

Uncut ruby

Uncut diamond

Uncut dragonstone (very rare)

Uncut onyx (unbelievable rare)

Gold Ore

Gold Bar

Silver Ore

Silver Bar

50 Ateel Arrows (semi-rare)

75 Iron Arrows (uncommon)

30 Earth Runes (common)

25 Water Runes (common)

10 Fire Runes (common)

2 Law Runes (uncommon)

3 Nature Runes (uncommon)

Trivia

 * After the release of Clay Dragons, the price for dragon bones went down dramatically, leading some people to rant in the forums. Jagex stated, that they wanted the prayer skill to become a little bit cheaper.
 * The clay dragon is famous for being the only monster to actually drop the onyx.