Registered in 1988 by Mark Zilis & T&Z Nursery of Illinois, this addition to the Tiara group of hostas is a tissue culture sport of H. 'Golden Tiara'. The medium size (14 inches high by 25 inches wide) plant has slightly wavy foliage of average substance. Pale lavender flowers bloom from mid-July into August.

According to The Hostapedia by Mark Zilis (2009), "Over the years, it has proven to be an outstanding landscape plant and ranks alongside 'Golden Tiara' itself for durability and growth rate."

The New Encyclopedia of Hostas by Diana Grenfell (2009) states: "A moderate to rapid increaser. Ideal for edging. Also good in a container."

An article by Warren I. Pollock in The Hosta Journal (2000 Vol. 31 No. 1) states that, "H. 'Diamond Tiara' (Zilis - 85). This is my favorite member of the Tiara Group because its green leaves having a white border don't lose their pizzazz and become blah as do its siblings, such as H. 'Golden Tiara' (Savory - 77) and the gold leaved H. 'Golden Scepter' (Savory - 83) in my garden come summertime."

An article by Warren I. Pollock in The Hosta Journal (2001 Vol. 32 No. 2)  states that, "If you've been enchanted with a small hosta in the British trade labeled H. 'Touchstone', I'm told it is "identical" to H. 'Diamond Tiara'...Roger Bowden replied, "I can confirm that H. 'Touchstone' and 'Diamond Tiara' are identical leaf-wise in our nursery. Incidentally, the purple flowers of H. 'Touchstone' were claimed to be scented but that now has been refuted."..."

"Leaves are green with a clean, fairly uniform, 1/8 to 1/4 inch wide, white border (depending on size of leaves). Colors are bright and crisp looking all season. This hosta is easy to identify. Both the coloring and margin appearance are much better than 'Allan P. McConnell's. My opinion is that 'Diamond Tiara' is more attractive and distinctive than 'Allan P.'. Has all the good properties of the Tiara series: fast grower, rapid multiplier, quickly mounds up, and attractive flowering display. Adult clumps can have leaf blades measuring 3 inches wide by about 4 inches long and larger."