Chopard Happy Diamonds Sport reference 4097 ladies quartz watch in 18K yellow gold featuring the iconic open sapphire crystal case design with freely floating diamonds inside, a full pavé round brilliant diamond outer bezel, champagne gold dial with Chopard Genève signature, and navy blue textured leather strap with 18K gold-plated buckle. Case measures 24mm, total weight 19.3 grams including strap, serial 20/3957.

Aftermarket leather strap. Buckle and all other parts original Chopard.

Product Specifications:

• Item Type: Ladies Quartz Dress Watch
• Brand: Chopard
• Model: Happy Diamonds Sport
• Reference: 4097
• Serial Number: 20/3957
• Case Material: 18K Yellow Gold
• Case Size: 24mm
• Case Shape: Round with open sapphire crystal floating diamond compartment
• Dial: Champagne Gold
• Indices: No applied indices — open floating diamond sapphire crystal face
• Hands: Black baton hands with central seconds
• Bezel Type: Fully Diamond-Set Pavé Bezel
• Bezel Color: Yellow Gold with White Round Brilliant Diamonds
• Total Diamond Carat Weight: 2.05 carats
• Floating Diamonds: Multiple loose diamonds freely floating inside sapphire crystal compartment
• Diamond Accents: Two larger bezel-set round diamonds at 12 and 6 o'clock on strap lugs
• Crown: Yellow gold crown
• Movement: Quartz
• Band Material: Navy Blue Textured Leather Strap (aftermarket leather strap)
• Band Color: Navy Blue
• Clasp: 18K Gold-Plated Pin Buckle with Chopard "C" Logo
• Features: Freely floating diamonds inside sapphire crystal, fully pavé diamond bezel, Chopard signed buckle
• Style: Vintage Luxury Ladies Jewel Watch
• Length: 6.5 inches
• Period: Vintage (1990)

About The Watch:

The Chopard Happy Diamonds Sport reference 4097 is one of the most instantly recognizable and beloved luxury watch designs ever created, built around the patented Happy Diamonds concept introduced by Chopard in 1976 — a revolutionary idea that placed loose diamonds freely inside a sapphire crystal compartment between the dial and the crystal, where they catch light and move with the motion of the wearer's wrist. This reference presents the Happy Diamonds concept in its most exuberant form, with the open case design exposing the full floating diamond compartment as the primary visual element of the dial, framed by a fully pavé-set round brilliant diamond outer bezel that adds structured sparkling brilliance to the freely moving stones within. The navy blue textured leather strap with Chopard-signed 18K gold-plated buckle completes the piece in a refined, contrasting color pairing that gives the warm yellow gold case a striking visual backdrop.

About Chopard:

Chopard was founded in Sonvilier, Switzerland in 1860 by Louis-Ulysse Chopard, and has grown into one of the world's most celebrated independent luxury watchmaking and jewelry maisons, producing all watches and jewelry in its own Geneva Manufacture. The Happy Diamonds collection is Chopard's most iconic and commercially successful creation, recognized globally for the patented free-floating diamond concept that transformed a loose stone — typically hidden in a closed setting — into the animated, joyful centerpiece of the design. Karl Scheufele, who acquired Chopard in 1963, championed the Happy Diamonds concept when designer Ronald Kurowski first presented it, and the design went on to become one of the most copied and recognized watch silhouettes of the late 20th century. Chopard Happy Diamonds watches in 18K yellow gold with full diamond bezels are among the most collectible and liquid vintage ladies watches in the secondary market, consistently sought by collectors who appreciate both the whimsical design concept and the fine jewelry quality of the execution. This reference 4097 with serial number 20/3957 represents a genuine vintage Chopard piece with all the hallmarks of the brand's finest craftsmanship period.