Here ya go:
SRD said:
Crystal, Deep: Deep crystal is crystal of above-average quality found at the hearts of large veins or deposits of mundane crystal (see below). Deep crystal is renowned for its strength and its psionically resonant nature. Mundane crystal is used for many items of psionic manufacture, such as dorjes, power stones, and psicrystals. Deep crystal is a better grade.
While a weapon made of deep crystal is no different from a mundane crystal weapon for a nonpsionic character, a psionic wielder of a deep crystal weapon can focus psionic power through it, increasing the damage that weapon deals. As a free action that does not provoke attacks of opportunity, the wielder can channel psionic power into a melee weapon or ranged weapon made of deep crystal. For 2 power points, the deep crystal weapon deals an extra 2d6 points of damage. The weapon will stay charged for 1 minute or until it scores its next hit. Bows, crossbows, and slings bestow this power on their ammunition. All missile weapons lose this effect if they miss. However, they may be recovered and charged again.
Any weapon made of deep crystal costs 1,000 gp more than its noncrystal counterpart. Any item could potentially be made out of deep crystal. Because deep crystal armor is considered to be made out of metal, druids cannot wear it.
Deep crystal has 30 hit points per inch of thickness and a hardness of 10.
Crystal, Mundane: Mundane crystal can be used in place of metal in weapons or armor, using a special forging process. The fortified crystal possesses the properties of a similar masterwork steel weapon or armor, except for visual appearance.
Weapons and armor made of mundane crystal cost the same amount to make as their masterwork counterparts. Any item could potentially be made with mundane crystal. Because mundane crystal armor is considered to be made out of metal, druids cannot wear it.
Mundane crystal properly forged has 25 hit points per inch of thickness and a hardness of 8.
So, going off of these not-necessarily-agreeable rules, I believe they say the following.
1. A normal crystal longsword has a cost equal to a masterwork longsword - but is not, itself, masterwork. Accordingly, the DC to create it is the same as a normal longsword (DC 15). Should you wish to craft one, you make progress each week equal to 15 * Craft check result. Assuming +10 on your Craft skill, you make 300sp of progress per week, and require 3,015sp worth of progress. This, therefore, takes just over 10 weeks to make.
2. A deep crystal longsword is also not inherently masterwork, and costs 1,000gp more than a normal longsword. Accordingly, a deep crystal longsword has a Craft DC of 15, and requires 10,150sp worth of progress. Assuming a Craft bonus of +10, this will take you just under 39 weeks to craft.
3. Making either of the above Masterwork adds an additional 300gp to their cost, but progress is made against DC 20. As such, the crafter could make 400sp of progress per week, completing the 3,000sp progress required in under 8 weeks.
4. Because raw materials costs are equal to 1/3 of the finished product's cost, each deep crystal longsword would require ~340gp worth of raw materials. Each masterwork deep crystal longsword would require ~440gp worth of raw materials. Most of this should be the crystal itself, though some of it is disposable tools, blanks, leather hilt wraps, etc.
5. If you want to increase the rate at which you craft these items, the easiest way is increasing your Craft check.
The second best way is using the "Faster Crafting" rules, and increase the DCs of the Craft check by 10. Alternatively, talk your DM into allowing a variant of that rule which allows you to increase the Craft DC by any amount (rather than in +10 increments).
