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How often have you, as a GM or as a player, encountered a description of a gemstone that goes something like this:

GM: "You have overcome the last trap in the ancient temple. Ahead of you stands the stone statue you have been seeking, a pair of red gems for eyes."

Players: "What kind of gems?"

GM: Checks a small table in his book that isn?t detailed enough and tries to think on his feet. Remembering that rubies are usually red he says, "Uh, they're rubies."

Players: "How big are they?"

GM: With no clue how to figure out how big the two rubies are, he says "Uh, the statue is only 10 inches tall so the rubies aren't that big."

Players: "Are the rubies cut? What shape are they?"

GM: Slightly curses his players and wonders if he could just convince the party that the statue was never really there in the first place...

Maybe this hasn't happened to you, or maybe not to this degree but, at one time or another, most GM's have encountered a situation like that. Maybe it's the treasure just generated on the random treasure table in the rulebook that says that the monster the party just defeated has 1d8 gems. What kind of gems are they? How valuable are they? What do they look like?

Now you can answer all of these questions with the Gemerator!

With the Gemerator you can create gems of 75 different types, each with it's own elements of size, cut, color and value. This allows you to create millions of different gems quickly and easily.

Also included are sample images of each gem type so that you can get an idea of what the gems look like and show them to your players!

The Gemerator is designed to allow you to create detailed gems in ANY setting!

The Gemerator is the fourth installment in the Campaign Detailer Series, a series of bargain-priced products designed to help liven up your game by providing you with new and detailed crunchy bits along with new ideas that enhance existing facets of your gaming experience.

Tangent Games presents:
The Campaign Detailer Series

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Reviews (8)
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May 15th, 2014
I have had this product for some time now. I have always liked it, but I never realized how valuable it was until my most recent campaign. In our current game the players have discovered an old abandoned mine. It is rich with raw minerals, gems and [...]
August 7th, 2010
I have used the Gemerator for a while now. The steps and tables are manual (e.g. pencil and paper based) and time consuming for each gem/jewel. The result is a unique and enchanting gem that my players enjoy. I would highly recommend the Gemerator or [...]
June 18th, 2008
I've always disliked saying 'You find half-a-dozen rubies each worth 50gp' - with this you don't have to anymore! It gives you a great list of semi-precious and precious gems so you can at least vary the types of gems your PCs find and gives a detailed [...]
February 15th, 2008
This has been very helpful to my gaming group. We will use it a lot. I really like that it has pictures of the stones. [...]
October 12th, 2007
Simply a fantastic product. If you EVER wanted to make gemstones a part of your treasure hoard, use this, please. Gives you the knowledge of a mineralologist as a DM. tell your players EXACTLY what the gem is worth and what it is, what it looks like, [...]
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Product Information
Silver seller
Publisher Stock #
File Size:
1.47 MB
Original electronic
Scanned image


Original electronic format
File Last Updated:
July 19, 2005
Publisher Info
Tangent Games
Tangent Games
Publisher Average Rating