We can see that the prongs are set in yellow gold, but the band itself is made of a different metal, possibly white gold but I am not sure.
The stone is most likely ruby, but other possibilities exist.
On May 20, 2017, Kate wore these special edition earrings to her sister’s wedding.
Being that they are special edition, they are not currently available on the website.
They are composed of cushion cut morganite stones rotated 45 degrees and set in a halo of small white diamonds. The post is set in gold. Below this is a bezel diamond suspended above the large oval drop, similar to the posts’ design (morganite surrounded by tiny white diamonds.
Here they are on Kate:
I estimate these cost more than $5,000. Many similar Kiki styles run up to that price.
On May 11, 2017, Kate wore these bright blue earrings on a visit to Luxembourg.
From the company: “A wonderful pair of blue topaz oval and cushion cut stones surrounded by diamonds set in 18ct white gold to form the most stunning drop earrings.”
Here is the close up:
A round blue topaz gemstone is placed in a halo setting and acts as the post for the earring. A bezel diamond stud connects the cushion cut blue topaz gemstone that dangles beneath the post. The cushion cut stone is also placed in a halo setting.
It is noticeable that these blue topaz earrings appear to be paler in hue than Kate’s other Kiki McDonough blue topaz pieces.
On September 26, 2016, Kate wore these earrings to greet First Nations communities and visit the Great Bear Rainforest.
From the website: “An ode to the kites that fly throughout South Asia for the annual kite festivals, the kite is such a simple joy of childhood. The triumph of that thin paper taking off in a gust of breeze up into the sky, the ducking and twirling up there in the sky with the birds. The 18 kt Gold kites flutter on these beautiful double drop earrings.”
A smaller rhombus shaped gold piece is placed on a larger rhombus shaped gold piece. Both are set on a gold hook. The smaller piece has rounded edges.
Kate has worn yellow, white and rose gold in her jewelry pieces. Let’s take a look at its chemical composition and what it really is.
Gold is a chemical element, found on the Periodic Table of Elements with the symbol Au and is a group 11 element. It is one of the least reactive chemical elements, and is considered to be a transition metal. Under normal conditions, gold is firm and not liquid-like. Because of this solid state, it is often found in nuggets or grains.
Gold is considered to be the most noble of the noble metals and is the most malleable of all metals.
Have you wondered why there are different colored golds? Pure gold is slightly reddish yellow in hue. This happens with alloys, which are a combination of pure gold and another metal. By definition, pure gold is 24k. Colored gold alloys are less than this. Denominations such as 10k, 14k, 18k, etc inform the consumer on how much pure gold is in a piece. This explains why the higher numbered karats tend to be more expensive. The increase in the amount of pure gold in the piece increases the value of the item.
White gold– an alloy of pure gold and a white metal, such as nickel, manganese or palladium.
Rose gold- an alloy of copper and pure gold. As one can imagine, the higher the content of copper, the more red/rosy the gold would appear to be. If the gold appears to be pinker than red, it contains more gold than copper.
Yellow gold- an alloy mixed with silver or copper.
At the Hillsborough Castle in Northern Ireland, Kate attended a garden party on June 14, 2016. She wore these Eden Flower earrings in citrine.
The citrine version does not appear on Kiki McDonough’s website. It is widely believed that these earrings are bespoke.
The website offers a Lemon Quartz version.
Here is the closeup:
A flower shaped diamond stud with a hollowed out center is connected to a round citrine drop set in a white diamond halo setting. The earrings are set in yellow gold. A single bezel diamond is suspended between the stud and the drop.
Here they are on Kate.
Since these were bespoke, we don’t have a confirmed price, but the Lemon Quartz earrings retail at £2,900. I am assuming that is their cost is close to that number.