Crystal chest

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Blue dot indicating chest's location on the map. (Note: it doesn't appear in the minimap).

The Crystal chest is the unofficial name of a treasure chest in Taverley that is famous for containing a Dragonstone, among other things. The chest is locked and can only be opened by a Crystal key. The crystal key is made up of a loop half of a key and the tooth half of a key you can acquire the crystal key by using them with each other. The Crystal key sells for more than most of the rewards, making it more monetarily satisfying to sell the key.

Attempting to open the chest without the crystal key yields the message, "This chest is securely locked shut."

[edit] Location

The house the chest is in.

[edit] Value analysis and Contents

The chest loot always includes an uncut dragonstone and will normally include another random reward, but not always. The Crystal key is usually worth more than what it can obtain. The key is currently worth 88,900 coins. Below are the values of the chest's contents, based on current G.E. prices. Most times you have a 9 out of 16 chance to make a profit, or a 56.25% chance, however this can fluctuate due to the price of the crystal key. The frequencies below are based on a batch of 1750 keys. There are theories floating around about only being able to obtain Rune Platelegs if you are a male character, and Rune Plateskirts if you are female. Presumably the chance is equal to get either of them. These tests were done on a Male Character, so there were actually no Rune Plateskirts achieved.

Image	Possible loot	Profit/Loss	Frequency (Approx.)
	Uncut Dragonstone, Spinach roll and 2000 coins	-14,200	11.9%
	Uncut Dragonstone, 50 of each elemental rune, 50 body and mind runes, 10 of all other runes, excluding blood, astral, and soul runes	9,700	10.1%
	Uncut Dragonstone, Loop half of a key and 750 Coins	1,450	4.6%
	Uncut Dragonstone, Tooth half of a key and 750 Coins	53,803	3.4%
	Uncut Dragonstone and 3 Runite bars	41,100	9.5%
	Uncut Dragonstone and 100 Coal (noted)	9,700	8.6%
	Uncut Dragonstone and 150 Iron ore (noted)	12,300	7.8%
	Uncut Dragonstone	-16,200	27.6%
	Uncut Dragonstone and Bones	-16,066	0% (None Gotten)
	Uncut Dragonstone, 5 raw swordfish and 1000 coins	-12,220	6.3%
	Uncut Dragonstone and a Rune platelegs	40,200	0.7%
	Uncut Dragonstone and a Rune plateskirt	29,600	0.7%
	Uncut Dragonstone and an Adamant sq shield	-14,089	1.7%
	Uncut Dragonstone, uncut Sapphire, 2000 coins, and a spinach roll	-12,588	0% (None Gotten)
	Uncut Dragonstone, 2 Cut Rubies and 2 Cut Diamonds	22,670	7.7%
	Uncut Dragonstone and cut Dragonstone	55,600	2%