Auctioneers are wigging out over Elizabeth Taylor.

Items owned and worn by Elizabeth Taylor -- including jewerly given to her by Richard Burton and Michael Jackson, and the wig she wore for 1963's Cleopatra -- are going up for the bidding at at least four separate auctions.

Eighty earrings, necklaces, pendants and rings will be up for the bidding at Christie's auction house in New York City starting Tuesday. Items sold at the four-day auction could total as high as $30 million.

Also read: Orson Welles' 'Citizen Kane' Oscar Up for Auction -- Again

Among the items is the Elizabeth Taylor Diamond, a 33.19-carat diamond ring bequeathed to the late actress by ex-husband Richard Burton. It's expected to fetch between $2.5 million and $3.5 million.

A diamond bracelet given to her by friend Jackson is estimated to sell for $30,000 to $50,000.

An exhibition featuring items from the auction opened at 

Christie's on Dec. 3 and ends Friday. Tickets to view the exhibit cost $30, and 25,000 have been sold. The exhibition was previously on display in Dubai, Geneva, Hong Kong, London, Los Angeles and Paris.

Also read: Elizabeth Taylor Dies at 79

An accompanying, separate, online-only auction started at Christie's Dec. 3 and ends Saturday. 

Yet a third Christies's auction -- this one in London -- featuring pieces from Taylor's collection of impressionist and modern art is set for February.

Then there's the auction is currently being held for an iconic hairpiece Taylor wore for her titular role in 20th Century Fox's 1963 movie Cleopatra.

Estimated to be worth $11,000, the wig is being sold through Heritage Auctions. Bids can be made at Entertainment.HA.com. As of Monday at 3:30 p.m. PST, there were five bids on the wig. The highest was $14,000.

Internet bidding for the wig ends Monday at 8 p.m. PT. A live floor auction will be held at 11 a.m. PT Tuesday at Heritage Auctions' headquarters in Dallas.

Taylor wore the wig -- made of real, dark brown human hair -- in a scene, set in Rome, in which Cleopatra tries to convince Caesar (Rex Harrison) to assume supreme control of the Roman Empire.

The wig, including the original binding on top, is partially damaged due to age. Some of the braids need to be repaired, according to the company's website.

Still another auction, featuring art, clothes and memorabilia owned by Taylor, will be held later this week. A portion of the proceeds will go to the Elizabeth Taylor AIDS Foundation, which she founded in 1991 to fund AIDS service organizations around the world.

Taylor died Mar. 23 of congestive heart failure. She was 79.