According to Peter Wilson in Cleveland, Gemologists assess the color of gemstones by considering saturation, hue, and tone. The primary hue for yellow gemstones should be yellow. Pure yellow gems are the most valuable, but those with secondary shades of green-brown or orange can still be considered yellow gemstones. The following are some popular yellow gemstones.

Citrine 

Citrine is a popular yellow gemstone. It is named after citron, a French word for lemon. It has a yellow-orange or yellow-brown hue that suits any jewelry wardrobe says Peter Wilson in Cleveland. Citrine is a tough gemstone and can be worn every day. The gem is a form of quartz and is therefore abundant and inexpensive. Naturally occurring hues are hard to come by, and heating to induce the yellow color is common. It is a popular mineral among crystal healers since it symbolizes contentment and happiness.

Simpsonite

Simpsonite is a tantate gemstone named in honor of Australian government mineralogist, Edward Simpson. It is found in hues of yellow-orange, yellow-brown, yellow-grey. Simpsonite occurs as single crystals in Ta-rich granite pegmatites. It is mined in Brazil, Australia, Canada, and the Democratic Republic of Congo.

Yellow diamond

Most people think of diamond as a colorless mineral, but gem experts including Peter Wilson in Cleveland believe that yellow is the proper color of diamonds. Yellow diamonds are expensive because of their rarity and high demand. The yellow color is caused by nitrogen in carbon crystals. Naturally occurring yellow diamonds are costly, but the yellow hue can be induced by exposing the gemstone to high temperature and pressure.

Golden Beryl

The golden or yellow beryl is also known as heliodor, a Greek translation of "gift from the sun". It is the least popular of the beryl gemstones, which also includes emerald, aquamarine, and morganite. The yellow beryl is less expensive compared to the others though it is made of the same material. It is a transparent mineral despite the shade of yellow. Beryls undergo radiation to enhance color and are cut uniquely to maximize pristine clarity.