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Okki (a.k.a. Gem) (a.k.a. Pyradiamond)
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A 2x2x2 in octahedral form.

  • Inventor: Unknown
  • Mechanism: 2x2x2
  • Patents: Unknown
  • Producer: Mefferts
  • Year: Unknown
  • Original Price: $12.00 USD
  • Current Price: $77.5 USD

The puzzle was first known under the names Okki and Gem (handmade piece-exchange-puzzles) before Mefferts started mass production under the name "Pyradiamond" by a price of $12. Like many other puzzles from Mefferts it has since gone out of stock.
Many collectors have made their own versions by shuffling the pieces of two pyramorphixes into this and into a Starburst puzzle.

You would think this puzzle would be trivial to solve with single-color stickers, but that's not the case. It only has four colors, so the goal is to make every color adjacent to itself - red must be touching red, blue must be touching blue etc. Other custom sticker arrangements add more challenge, but the four-color version makes a good puzzle to give to your your friends and family to solve.

No later than 2017 Mefferts produced its own version, named "Pyramorphinx". See images 4-7.

Edge length: 50 mm
Weight: 53 grams

Price Tracking Data

DISCLAIMER: The following table contains user-generated content. This information is collected to serve as a rough guideline and is certainly not complete and may not even be accurate. This information is filtered and carefully moderated, but incorrect information will inevitably find its way into the system. Always use your own judgement when buying or selling an item.

Sale Date Price (USD) Sale Type Condition Package Condition Notes Contributors Edit
Feb 14 2009 $74.00 eBay Auction Good N/A Made from two distortion demons. turtlecannpn
Feb 28 2009 $81.00 eBay Auction Excellent N/A None ejisfun



Thank you to the following people for their assistance in helping collect the information on this page: Sandy, GoombaGeek.


This puzzle can be found in collections of these members:

Joshua Bell: My Collection
Ed Cambridge: My Collection
riddler17: My Collection
John Redvers Rooney: My Collection
Jeff Goetz: My Collection
isacisco: My Collection
isacisco: My Collection
Michael: My Collection
PuzzleManiac: My Collection
Trevor Sayre: My Collection
Darren Grewe: My Collection
isacisco: My Collection
nicky_uk: My Collection
mamessing: My Collection
skeneegee: My Collection
Andreas Nortmann: Andreas' collection
S.Rubiks: My Collection
rubik_fr: My Collection
solucions: MI COLECCION
snake solvers wish list: My Collection
snake solvers wish list: My Collection
jjros242: My Collection
geduldspiele: My Collection
JasonSmith: My Collection
ptrsdboy: My Collection
MonkeyZ: My Collection
technoloko: Technoloko's
exaquint: My Collection
TylerMcDaniels: Tyler's Collection
kastellorizo: My Collection
TylerMcDaniels: Tyler's Collection
Markube: Mark's Kubes

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