Diamonds on the Key

🏆 Chosen Best Jeweler in Key Biscayne | Diamonds & fine jewelry designs with the highest level of personal service at the best prices! 💎 MIA➕BOS ✈️

06/19/2026

Thank you Mattia Cicognani and your team for your warm hospitality, impeccable service, charming ambiance, and delicious Italian cuisine! Such a memorable experience!
🇮🇹🥂🤩🍨💖🍝

At San Marco Miami, every detail at this new 💎 located in Miami South of Fifth neighborhood is thoughtfully crafted, from the welcoming greeting I received upon arrival, to the beautifully created space, to the expertly prepared and served plates. Inspired by the timeless elegance of Italy, the “butter tower” also did not disappoint! Striking up a conversation with adjacent guests was also fun!

What to wear for summer dinner?Italian gold jewelry from course✨💛✨From tubogas collars to chunky gold links and gold hoops- summer gold is always perfect!

06/19/2026

Yellow Gold Paperclip Necklaces available ✨

DM for more info and price
…

06/18/2026

From our Exclusive Vault Collection ✨💎

DM for more info and price
…

06/17/2026

14K White Gold Pearl & Diamond Earrings ✨⚪💎
$2,145.00
…

23s

06/16/2026

Shine this Summer with our Yellow Gold & Diamond Necklaces ✨💎💙💚💛

DM for more info & current prices
…

06/15/2026

Pear Shape Diamond Makeover

After inheriting several pieces of dated yellow gold jewelry, this client turned to Diamonds On The Key for “Makeover Inspiration”, to transform these items into something she would wear.

Since the client did not care for yellow gold, white gold was decided for the new custom-made design. The pear shape diamond became the focus for the new piece of jewelry, as it was substantial in size and good quality. A pendant design was selected, with all the other smaller diamonds unset from the bracelet and brooch and sorted by size. Larger diamonds were utilized for the “double diamond halo border”, to be set around the pear shape diamond, for added scale and volume, with the smaller diamonds utilized for the chain.

A computerized CADD design was created to fit all the various size and shape diamonds for the pendant and cast in 14 karat white gold. The smaller diamonds were handset into smooth white gold bezels, laser soldered into the link chain, and the chain connected to the pendant.

The client received a “scrap gold credit” for the old yellow gold, which accounted for 80% of the price of her new necklace, making for a very economical custom Makeover! The client was thrilled!
•••••