Yuri Saotome is a charismatic beautician who runs a major sports gym and aesthetic salon. Her older brother died in an accident just before his opportunity to achieve a gold medal at the Olympics, so she chose to marry a wrestling gold medalist. After giving birth to four children, she and her husband broke off their marriage, leaving Yuri to raise the kids by herself. With their excellent genes, three of them have been raised as possible candidates for the next Olympic games.
Runtime: 45 minutes
GOLD - Colored gold - Netflix
Pure gold is slightly reddish yellow in color, but colored gold in various other colors can be produced. Colored golds can be classified to three groups: Alloys with silver and copper in various proportions, producing white, yellow, green and red golds. These are typically malleable alloys. Intermetallic compounds, producing blue and purple golds, as well as other colors. These are typically brittle, but can be used as gems and inlays. Surface treatments, such as oxide layers. Pure 100% (in practice, 99.9% or better) gold is 24 karat by definition, so all colored golds are less than this, with the common being 18K (75%), 14K (58.5%), 10K (41.6%), and 9K (37.5%).
GOLD - Purple gold - Netflix
Purple gold (also called amethyst gold and violet gold) is an alloy of gold and aluminium rich in gold-aluminium intermetallic (AuAl2). Gold content in AuAl2 is around 79% and can therefore be referred to as 18 karat gold. Purple gold is more brittle than other gold alloys (a serious fault when it forms in electronics), as it is an intermetallic compound instead of a malleable alloy, and a sharp blow may cause it to shatter. It is therefore usually machined and faceted to be used as a “gem” in conventional jewelry rather than by itself. At a lower content of gold, the material is composed of the intermetallic and an aluminium-rich solid solution phase. At a higher content of gold, the gold-richer intermetallic AuAl forms; the purple color is preserved to about 15% of aluminium. At 88% of gold the material is composed of AuAl and changes color. The actual composition of AuAl2 is closer to Al11Au6 as the sublattice is incompletely occupied.
GOLD - References - Netflix