Most of the gem names are linked to the picture gallery of state gemstones.
The "Adoption Date" link goes to the best existing material from the respective state government or science institution.
On the other hand, Florida's state gem (moonstone) is not actually found in Florida.
Instead, its adoption is a tribute to the role that the state played in the 1969 moon landing.
In "The Harsh Light of Day", Buffy tries to return to the dating pool, and guest star James Marsters, reprising his role as Spike, returns to Sunnydale for a gem that will make him invincible.At first Harmony appears friendly towards Willow, but ultimately reveals herself to be a vampire and bites Willow.Oz saves Willow by brandishing a cross, forcing Harmony to flee, but she also threaten them with an attack from her boyfriend. Ruby has bright scarlet skin, burgundy irises and dark burgundy, square shaped hair.Her ensemble also includes mid-thigh burgundy shorts, and short, pointed maroon boots similar to Amethyst's.Above all else, the gems are unique to or represent their state in some fashion.Arkansas' adoption of diamond as their state gem, for example, is due to the state having the only public diamond deposit in the USA.Homeworld was attempting to create a new colony on Earth, which was overseen by Blue Diamond.She was part of the diplomatic team sent to stop Rose's Rebellion on Earth, as one of the three Rubies assigned to guard Sapphire, an aristocratic Gem with prophetic vision, adamant for destroying the uprising in its crib.A gemstone is not necessarily a sparkling crystal—the majority of state gemstones are not crystalline minerals, but rather colorful rocks that look their best as flat, polished cabochons (perhaps in a bolo tie, belt buckle or ring).Most are unpretentious, inexpensive stones with democratic appeal.