CAL. PEN. CODE § 487 : California Code - Section 487

Grand theft is theft committed in any of the following cases:

(a) When the money, labor, or real or personal property taken is of a value exceeding nine hundred fifty dollars ($950), except as provided in subdivision (b).

(b) Notwithstanding subdivision (a), grand theft is committed in any of the following cases:

(1) (A) When domestic fowls, avocados, olives, citrus or deciduous fruits, other fruits, vegetables, nuts, artichokes, or other farm crops are taken of a value exceeding two hundred fifty dollars ($250).

(B) For the purposes of establishing that the value of domestic fowls, avocados, olives, citrus or deciduous fruits, other fruits, vegetables, nuts, artichokes, or other farm crops under this paragraph exceeds two hundred fifty dollars ($250), that value may be shown by the presentation of credible evidence which establishes that on the day of the theft domestic fowls, avocados, olives, citrus or deciduous fruits, other fruits, vegetables, nuts, artichokes, or other farm crops of the same variety and weight exceeded two hundred fifty dollars ($250) in wholesale value.

(2) When fish, shellfish, mollusks, crustaceans, kelp, algae, or other aquacultural products are taken from a commercial or research operation which is producing that product, of a value exceeding two hundred fifty dollars ($250).

(3) Where the money, labor, or real or personal property is taken by a servant, agent, or employee from his or her principal or employer and aggregates nine hundred fifty dollars ($950) or more in any 12 consecutive month period.

(c) When the property is taken from the person of another.

(d) When the property taken is any of the following:

(1) An automobile, horse, mare, gelding, any bovine animal, any caprine animal, mule, jack, jenny, sheep, lamb, hog, sow, boar, gilt, barrow, or pig.

(2) A firearm.