Sigma is the sum

In mathematics the letter sigma means one thing: add it all together. Vintage Sigma does exactly that. Its egg-shaped end caps combine every technique the line has used, rows of pave crystals ribbing the dome, and two larger faceted stones, a square and an oval, held in smooth bezel settings among them. Alfa and Beta carry single stones, Gamma carries metalwork, Delta carries pave; Sigma carries all of it at once, the most jeweled caps in the alphabet, on the line's signature twisted steel cable. New for 2026.

Bends to your wrist. Fits almost everyone.

The cable is an open cuff that adjusts by gently bending to your exact fit, which changes what this bracelet is: a piece you can give without knowing a size. It suits any man or woman, sits as naturally on a smaller wrist as on a larger one, and removes the single biggest fear of jewelry gifting. You cannot get the size wrong, because there is no size to get wrong.

Maximal caps, industrial cable

What keeps Sigma wearable is the same contrast that runs through the whole line: the body is a cool, exact twisted cable in solid 316L stainless steel, and only the two caps celebrate. The steel asks for nothing, no tarnish, no rust, no polishing, and the cuff has no clasp to break, because it has no clasp at all.

The rest of the alphabet

The warmer edition is the Vintage Sigma G, the same caps in gold. The line opens with Vintage Alfa and Vintage Beta, and the full alphabet, Gamma and Delta included, lives in the Vintage collection.

Designed in Los Angeles since 2020. Ships gift-boxed.

Steel that needs nothing, settings that ask for one habit

The cable is solid 316L stainless steel: no tarnish, no rust, no polishing, ever. The caps carry the most stones in the line, pave rows and two bezel-set faceted stones each, and settings that dense are the reason for the one recommendation this bracelet has.

Water: most things, two exceptions

Showers, rain, sweat, and fresh water are non-events. Salt water and pool chlorine are the exceptions: salt is abrasive as it dries, chlorine films crystal, and dense settings hold both in their seams. Take it off for the ocean and the pool, or rinse in fresh water right after, and the caps keep their fire for years.

What dims the stones, and what revives them

Crystal brilliance is a surface phenomenon, and skin film is its only enemy: sunscreen, cologne, and hand cream coat the stones and mute the light. The bracelet goes on last, after everything you spray or rub in. A wipe with a soft dry cloth brings the sparkle back; for a deeper refresh, a soft brush, warm water with a drop of mild soap, rinse, dry.

Care

• Put it on last, after sunscreen, cologne, and hand cream.
• Shower and fresh water: fine. Ocean and pool: take it off, or rinse in fresh water after.
• Adjust the bend in small, gentle moves; set it once, not daily.
• Wipe the jeweled caps with a soft dry cloth to keep the fire in the stones.
• Store it in the Caligio pouch bag, where the caps will not knock against other jewelry.

Skin sensitivity

Green wrist marks come from copper alloys. Vintage Sigma is 316L stainless steel, nickel-free and copper-free, the alloy dermatologists point to as the safe default for reactive skin.

To define the correct sizing of your wrist, we highly recommend using a tape measure and measuring the circumference of your wrist just above the hand. However, if you do not have a special measure, use a small piece of tape or a cord. Wrap it around your wrist and measure the length against a ruler.

Need XL? Check our XL Collection

Plenty of Caligio’s Cuff bracelets are adjustable and comfortably fit most of the standard wrist sizes. Slip-on cuff bracelets sizes are easily increased and decreased with bare hands. Keep in mind that the wrist size is not the same as the length of a bracelet. Still, need help? Email us at: support@caligio.com.

Calligio provides a FREE Standard Shipping delivery for all US orders above $50. International customers from countries/regions including Canada, United Kingdom, Europe and Australia get a free delivery starting from $150 orders.

Your orders are picked, packed, and shipped the same day from Los Angeles, California. The products ordered after 2PM PST are shipped the very next working day. The shipping department is on duty Monday through Saturday, excluding holidays.

Once your order has been processed, you will receive an email with your tracking number that allows you to check the order’s location. You have up to 2 hours after placing an order to request editing or canceling the order by writing to email support@caligio.com

Make sure to pick up your order in time to avoid any negative carry-outs after the product is delivered, as Caligio doesn’t take any responsibilities for orders after the status changes to Delivered. However, if you are worried about your orders getting wrongly delivered or stolen - opt for Standard Delivery + Priority Processing & Shipping Insurance for just $9.99 US only to secure a free replacement for all unreceived products.

Please note that the below-mentioned delivery timings are taken from the official websites of the delivery providers and may vary depending on the carriers delivery speed. International orders may be applicable for local taxes on top of the delivery costs.

Please note, sometimes delivery providers may come up with a shipment delay due to the restrictions issued by countries' governments in these challenging times. Therefore, there may be cases when the package arrives several days after you receive a delivery notification.

If you ordered the wrong size, color, or simply would like to return the product, you can do so within 30 days from the delivery date. To be eligible, the item must be unworn and in its original packaging, free from any odors (deodorant, perfume), stains, or signs of wear. The original gift box and velvet pouch must be included - returns without original packaging will not be accepted. Please note that a $9.99 shipping and handling fee applies to all domestic returns and will be deducted from the amount refunded.

Once your return is approved, please send the item(s) back within 7 days. 

For exchanges within the US, your first exchange is completely free and will be dispatched within 5 business days after we receive and inspect the item. Subsequent exchanges are at the customer's expense.

For international customers, returns and exchanges are handled on a case-by-case basis. Due to the complexity of international shipping, please contact us at support@caligio.com and our team will guide you through the process and find the best solution for you.

We do not process returns or refunds for final sale(special price) items, bundles, Buy 2 Get 1 Free offers, or promotional deals with discounts of 20% or more.

For any questions, contact us at support@caligio.com.