https://doublehelixshop.csiro.au/Competitions/Competition-1


Polished!




Discover incredible hidden patterns, colours and structures in ordinary rocks after polishing them in this rock tumbler. You'll be amazed at how rocks from the beach or your backyard are transformed into something special! The tumbler kit includes stones, four stages of grinding powder and a craft kit for jewelry making.

Crystals have symmetrical surfaces, often with a repeating pattern. Some examples of crystals are diamonds, snowflakes and rock salt. To enter the competition for a rock tumbler, send us a drawing of a crystalline structure.

Red and silver plastic rock tumbler.  
How to enter

To be in the running to win this fantastic prize, send us your entry with your name, age, address and Double Helix subscriber number*. Get a parent's permission, ask them to sign each entry, and email your submission to helixassist@csiro.au by 14 April 2020. The best entries in each competition will win the prize.

*Don't know your subscriber number? Check the address label that came with your magazine or subscribe now.
Terms and conditions of entry

    To be valid, all entries must include name, address, age of entrant and Double Helix subscriber number.
    All entries become the property of CSIRO and will not be returned.
    Entering the competition assigns copyright to CSIRO.
    Entries will be judged on creative merit, not by chance.
    Age will be taken into consideration when judging.
    All decisions on competitions are final and will not be discussed further.
    Winners will be notified by mail and the names of competition winners only will be published three issues later.
    CSIRO shall not be liable for any damage or loss suffered in connection with any of the prizes.
    Any change in value of the prize between the publishing date and the delivery date is not the responsibility of CSIRO.
    In the case that prizes become unavailable after the publishing date, CSIRO will send an alternative prize.
    The closing date for this issue's entries is 14 April 2020.
    Competition entries must be the entrant's own work.
    It is the responsibility of the entrant to ensure copyright of their entry is not assigned elsewhere.
    Winners should allow six weeks for prize delivery.





 Edu-Toys Rock Tumbler
By: Elenco
Item#: 3261515
AUD118 AUD133