S.C. Code Ann. § 20-3-630
(A) The term "marital property" as used in this article means all real and personal property which has been acquired by the parties during the marriage and which is owned as of the date of filing or commencement of marital litigation as provided in Section 20-3-620 regardless of how legal title is held, except the following, which constitute nonmarital property:
(2) property acquired by either party before the marriage and property acquired after the happening of the earliest of:
(5) any increase in value in nonmarital property, except to the extent that the increase resulted directly or indirectly from efforts of the other spouse during marriage.
Interspousal gifts of property, including gifts of property from one spouse to the other made indirectly by way of a third party, are marital property which is subject to division.