In this style of contexts, we say more "Golden Cross", "Gold Cross" is employed mainly as proper noun/names. We can find several pages with "Gold Cross", but it's not proper translation in my eyes... Just as: 黄金分割 we say "golden section" but not "gold section"...

Plz see following for details:
Golden Cross （金叉（牛叉）） 短期平均線翻升向上突破中、長期平均線並帶動中、長期平均線同步翻轉向上。意味著將有一波漲升行情可期，對多頭而言往往代表一個強烈的 ...
http://www.mpfcorps.com/cnt/resources_fh.html

Golden Cross （金叉（牛叉））. 短期平均线翻升向上突破中、长期平均线并带动中、长期平均线同步翻转向上。意味着将有一波涨升行情可期，对多头而言往往代表一个强烈 ...
http://www.dailyfx.com.hk/dictionary/index.php?letter=g

MACD指標的實戰技巧主要集中在MACD指標的「金叉」、「死叉」以及MACD指標中的 .... [size=5]MACD Golden Cross of the First KInd ( Strong ), Golden ...
http://forum.iclub8.hk/archiver/?tid-1395.html

Prediction of Golden Cross and Dead Cross by artificial neural networks could contribute a lot for constructing an intelligent decision support system for ...
http://d.wanfangdata.com.cn/NSTLHY_NSTL_HY18253933.aspx

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