Essential and refined.
The Cristallo Unico Ring by Marri Cortona features a luminous central stone that captures the eye with its quiet, effortless elegance.
A single crystal — suspended between light and style — becomes the true centerpiece of this timeless design.
Handcrafted in Tuscany by our master artisans, this ring merges ancient craftsmanship with a contemporary creative vision, embodying the brand’s philosophy of simplicity, balance, and authenticity.
Each crystal hue is carefully selected to reflect subtle shades of light and personality, making every piece a small work of art — to wear every day or treasure for life’s special moments.
A timeless jewel, celebrating Tuscan mastery and the essential beauty of Marri Cortona design.
Cristallo. Light to wear.
The right fit
Every Marri Cortona creation is designed to combine presence and comfort. Always check the available variants and the measurements shown in the jewel description.
Use a soft measuring tape without tightening it. If you use a string, mark the meeting point and compare it with a ruler. Measure exactly where you will wear the jewel.
Measure the inner circumference of a ring you wear comfortably, or wrap a strip of paper around the base of your finger without tightening it. Italian ring size corresponds to the inner circumference in millimetres minus 40.
| IT size | Circumference | Inner diameter |
|---|---|---|
| 10 | 50 mm | 15,9 mm |
| 12 | 52 mm | 16,5 mm |
| 14 | 54 mm | 17,2 mm |
| 16 | 56 mm | 17,8 mm |
| 18 | 58 mm | 18,5 mm |
| 20 | 60 mm | 19,1 mm |
| 22 | 62 mm | 19,7 mm |
If the model is adjustable, adapt it only with gentle movements and always follow the specific instructions in the product description.
Wrap the tape around the point where you will wear the bracelet, without leaving space. If you are between two sizes, choose the larger one. For open or adjustable models, also check the specific instructions on the product page.
| Size | Wrist circumference | Fit |
|---|---|---|
| S | 16–17 cm | Snug |
| M | 18–19 cm | Regular |
| L | 20–21 cm | Relaxed |
Lay a necklace that fits the way you like on a flat surface and measure it end to end, clasp included. Compare the measurement with the length shown in the description: the drop changes depending on body shape and the volume of the jewel.
Earrings do not require a size. Before purchasing, check the length, overall dimensions and fastening type in the description so you can assess proportions and comfort.
Still unsure? Marri Cortona customer care can help you choose the right fit.
From the same collection
Cristallo Collection
Real reviews
4,8/5 verified reviews
“Carefully selected materials and a design you will not find elsewhere: every piece truly has character.”
“What sets Marri Cortona apart is the professionalism and care with which the right piece is recommended.”
“Kind and fast customer service: a small issue with my order was solved immediately, with no stress.”
“I discovered the brand on Instagram and the Alligator bracelet is even more beautiful in person.”
“The Voilà bracelet exceeded every expectation: a true cascade of light on the wrist.”
“Every collection has a unique, recognizable design: taste and personality in every detail.”
