Stacy is right. Get a receipt!
In CA, the trade (or even intent to sell) ivory is prohibited--however those statues have failed in court more than once, including a well known decision by the 9th Circuit COP. Read here: (
https://bulk.resource.org/courts.gov/c/F2/702/702.F2d.760.82-4303.html).
Also, in CA an exemption was added for possession and sale of elephant ivory that was here before 1977. Here's part of the statement by CA Fish & Game on this:
"California Penal Code section 653o was enacted in 1970 and amended in 1976 to include elephants. This section prohibits the importation, possession with intent to sell, and sale of any parts of specified animals, including elephants. However, an uncodified portion of the statute states that Penal Code section 653o does not apply to the sale of elephant items imported prior to June 1, 1977. In addition, federal courts have held that Penal Code section 653o is preempted by federal law with respect to its prohibition on trade in elephant products to the extent trade in elephant products is authorized pursuant to federal regulations or permits. See Man Hing Ivory & Imports, Inc. v. Deukmejian, 702 F.2d 760 (9th Cir. 1983)."
(The whole page is available here:
http://www.dfg.ca.gov/serp.html?q=ivory&cx=001779225245372747843:3y4rnp6j9ny&cof=FORID:10&ie=UTF-8
A fair question is, "What is the requirement of the seller/owner to prove provenance of the material?" While a lot of suppliers provide documentation (and it's a good idea to keep such), there is no requirement to produce proof the material is pre-77. That aspect is essentially unenforceable and without a legal requirement to produce some form of documentation, the burden of proof SHOULD land on the state to show a particular piece ivory was imported after '77 (about as impossible to do as proving a particular piece was imported prior to '77).
When I talked with F&G about this a few years ago, they assured me that because of the powerful exemptions and court ruling against it, they were generally not enforcing 653o on elephant ivory being sold incorporated into products or at auction.
HOWEVER:
ANY deputy sheriff, city police or state law enforcement officer could seek to cite you for violating 653o (misdemeanor) and confiscate your product, but I was told by the F&G people that you'll get it back once it's referred to the feds or CA F&G or to a DA that knows the 'lay of the land' on this.
So yes, it's a potential head ache.
Stick with Mammoth. No headaches, it's not controversial and it has undeniable "cool" factor!