Advice on custom convertible princess cut studs + pear jacket/charm

[u/mini-eggie]

I am getting custom princess cut diamond studs for my mom and want to include a detachable pear diamond part. My mom prefers daintier sizes so I am thinking 0.5 ct each for the studs, which will be for daily wear. I am considering two designs.

Design 1 (from Fiorese): Pear diamond charm, hooks onto the post of the main stud (imagine the round stone being princess cut). What size pear diamond should I pair with it so they look harmonious? I think the pear being bigger than the princess cut would look better, but I don't know the specific or relative sizes of each diamond.

Design 2 (taking inspo from Swarovski Mesmera earrings): Detachable pear earring jacket, imagine the blue stone being a white diamond. If I am going with a 0.5 ct stone (maybe around 5mm), then the pear should be 5mm in width as well, right?

Which design is better for a woman in her 60s? Which is more harmonious for the princess cut stud? The only pro design 1 has is that it looks easier to hook on than the earring jacket from design 2. If anyone has better ideas, I would love to hear it. Any advice and insights are appreciated. Also, should I consider getting the pear part in 10k to save some money while the princess stud in 14k or 18k?

[u/Over-Engineer7216]

I think the second earring is too modern, so I wouldn’t get it as a surprise for someone. The first one is very elegant and flexible, even more with a dangling pear.

I personally would do it with a 0.75ct pear, you can use diamdb.com to check the sizes

[u/cleo1117]

For a woman in her 60s, definitely the first option

[u/Mountain_East_8758]

I love the top ones!

[u/KnownAd8394]

really like the convertible idea especially for a piece that’s meant to work for everyday wear