The Gem cutting calculator is a calculator using current exchange prices which shows you how much money you will lose or gain by successfully cutting one of each gem type assuming you buy and sell the gems using the grand exchange. Using high or low alchemy may affect how much you lose or gain from cutting gems. Also, buying higher than or selling lower than the current market price (such as buying at highest price or selling at lowest price) will cause you to lose more money when cutting gems.

To determine how much you will lose or gain from cutting more than one gem of the same variety, multiply the number of gems you plan on cutting by the value in the per gem column. To determine how much it will cost per level, multiply the amount of crafting XP until the next level by the value in the per XP column.

Gem Cutting Loss/Profit Calculator Edit

Note: The following calculations use real-time market prices. For more information, see Grand Exchange Market Watch.

Image	Variety of Gem	Level	Uncut Gem Cost	Cut Gem Value	XP Each	Loss/Profit (Per Gem)	Loss/Profit (Per XP)
	Opal*	1	&0000000000000116000000 116	&0000000000000208000000 208	15	&0000000000000092000000 92	&0000000000000006099999 6.1
	Jade*	13	&0000000000000279000000 279	&0000000000000393000000 393	20	&0000000000000114000000 114	&0000000000000005700000 5.7
	Red Topaz*	16	&0000000000000412000000 412	&0000000000000369000000 369	25	&-1-1-1-1-1-1-1-1-1-1-1-1-1-1-5-3000000 -43	&-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-2300000 -1.7
	Sapphire	20	&0000000000001110000000 1,110	&0000000000000464000000 464	50	&-1-1-1-1-1-1-1-1-1-1-1-1-1-7-5-6000000 -646	&-1-1-1-1-1-1-1-1-1-1-1-1-1-1-2-3099999 -12.9
	Emerald	27	&0000000000001757000000 1,757	&0000000000000804000000 804	67.5	&-1-1-1-1-1-1-1-1-1-1-1-1-10-6-3000000 -953	&-1-1-1-1-1-1-1-1-1-1-1-1-1-1-2-5900000 -14.1
	Ruby	34	&0000000000003492000000 3,492	&0000000000001208000000 1,208	85	&-1-1-1-1-1-1-1-1-1-1-1-1-3-3-9-4000000 -2,284	&-1-1-1-1-1-1-1-1-1-1-1-1-1-1-3-7100000 -26.9
	Diamond	43	&0000000000007092000000 7,092	&0000000000002157000000 2,157	107.5	&-1-1-1-1-1-1-1-1-1-1-1-1-50-4-5000000 -4,935	&-1-1-1-1-1-1-1-1-1-1-1-1-1-1-5-6100000 -45.9
	Dragonstone	55	&0000000000015141000000 15,141	&0000000000009995000000 9,995	137.5	&-1-1-1-1-1-1-1-1-1-1-1-1-6-2-5-6000000 -5,146	&-1-1-1-1-1-1-1-1-1-1-1-1-1-1-4-8600000 -37.4
	Onyx	67	&0000000003353018000000 3,353,018	&0000000003320624000000 3,320,624	167.5	&-1-1-1-1-1-1-1-1-1-1-1-4-3-40-4000000 -32,394	&-1-1-1-1-1-1-1-1-1-1-1-1-1-20-4599999 -193.4

Note: If a gem is marked with an asterisk (*), there is a possibility of failing to cut that type of gem, causing it to shatter. If this happens, you will receive minimal experience, and you will not make any money back if you paid for the gem. It is not recommended to train using this type of gem.