Rare Antique & Estate Jewelry

Curated by a Certified Gemologist

Specializing in Old Mine Cut Diamonds, Rose Cuts & One-of-a-Kind Historical Pieces

Antique Art Nouveau Seed Pearl Mourning Glass Open Locket
$1,500.00

Art Nouveau Seed Pearl Mourning Locket | Solid Gold Antique Memorial Pendant

A beautiful and substantial Art Nouveau mourning locket crafted in solid gold and delicately accented with natural seed pearls. The graceful flowing lines and elegant feminine design are quintessential of the Art Nouveau period, making this a striking collector's piece as well as a wearable antique.

The locket has been tested with XRF and tests between 14–16 karat gold. It remains in excellent antique condition with both original glass compartments fully intact. The glass windows open to allow you to place a cherished photograph, lock of hair, dried flowers, or another meaningful keepsake inside. The compartments open with a bit of patience and a steady hand, as intended for an antique piece.

Its generous size gives it wonderful presence while remaining elegant and feminine.

Details

  • Antique Art Nouveau mourning locket

  • Solid gold, XRF tested between 14–16 karat

  • Natural seed pearl accents

  • Original glass compartments on both sides

  • Both glass panels are fully intact

  • Opens to hold photographs or sentimental keepsakes

  • Excellent antique condition

Measurements

  • Drop: 2¼ inches (57 mm)

  • Width: 1⅓ inches (34 mm)

A rare and beautifully preserved example of Art Nouveau jewelry, perfect for collectors of mourning jewelry, Victorian and Art Nouveau antiques, or anyone who appreciates sentimental heirloom pieces.

Antique Art Deco Platinum Diamond & Emerald Openwork Cross by Bagués
$5,500.00

A breathtaking masterpiece of early 20th-century Spanish haute joaillerie, this authentic Art Deco openwork cross is an exceptional monument to European design. At the beating heart of the piece sits a masterfully vibrant, saturated square emerald-cut green emerald, meticulously secured in a low-profile bezel setting. The central crucifix is beautifully layered over an architectural, geometric diamond-set "sunburst" openwork web gallery that allows light to completely flood the stones from behind. The entire silhouette, including the stylized geometric articulated bail, is pavé-set with shimmering diamonds, creating a magnificent lace-like effect against the skin.

Presented in immaculate condition, this museum-grade heirloom retains its original custom-made, silk-and-velvet fitted presentation box stamped by the legendary elite house of Joyería Bagués, Paseo de Gracia, Barcelona. Founded in 1839, Bagués remains one of Spain's oldest and most prestigious luxury firms, making an intact, boxed archival piece like this an extraordinary, fully traceable acquisition for a discerning fine jewelry collector.

Details

  • Maker: Joyería Bagués (Paseo de Gracia, Barcelona)

  • Late Art Deco, circa 1930s

  • Platinum

  • Approximately 0.90 ct square-cut emerald

  • Approximately 2.00 ctw diamonds

  • Full-cut and single-cut diamonds

  • 9.7 grams

  • Approximately 5 x 3 cm

  • Accompanied by original box from Barcelona

  • Excellent Antique condition consistent with age and use

Victorian 18k Gold Diamond Rose Cut Rare Stanhope Viewer Ring
$1,400.00

The Stanhope viewer, invented in the mid-19th century, is a tiny optical lens that magnifies a microscopic photograph mounted within the jewelry. These remarkable microphotographs, often depicting famous landmarks, religious scenes, portraits, naughty photos or sentimental messages, were popular Victorian souvenirs and keepsakes. Combining innovative optics with fine jewelry, Stanhope pieces are among the most fascinating novelty jewels of the Victorian era and remain highly sought after by collectors today.

  • Handcrafted 18K gold ring

  • Natural earth-mined rose-cut diamond daisy design

  • Rare and unusual Stanhope viewer novelty ring

  • Features two original Stanhope viewers designed to display microphotographs

  • Viewers are oriented in opposite directions, allowing one to be used regardless of how the ring is worn

  • Fair condition consistent with age

  • Floral cluster measures approximately 10 mm in diameter

  • Center rose-cut diamond measures approximately 5.3 mm

  • Band tapers from approximately 6 mm at the shoulders to 1.6 mm at the base

  • Size 6.5

Why Collectors Trust Louped

★★★★★ 846 Reviews • Nearly 3,000 Sales on Etsy alone.

Every piece at Louped is personally examined, researched, and authenticated by Danielle Mascio, Graduate Gemologist (GIA) and Certified Gemologist Appraiser with more than 20 years of experience in the jewelry industry.

In addition to curating antique and estate jewelry, Danielle works with HGL Certified Jewelry Appraisers, providing professional jewelry appraisal, authentication, and valuation services. This expertise allows every piece to be carefully evaluated for authenticity, craftsmanship, condition, and historical significance.

Whether you're purchasing an old mine cut diamond ring, a rare Victorian jewel, or a one-of-a-kind estate treasure, you can shop with confidence knowing each piece has been selected with a gemologist's trained eye and an appraiser's attention to detail.

🔍 Authenticated
Every piece personally examined and researched.

💎 Expertly Curated
Selected for quality, rarity, and historical significance.

📦 Secure Shipping
Professionally packed and fully insured.

Estate Modern & Designer Pieces

Half the price.

Sourced from our Las Vegas Buy and Sell Location

Roberto Coin Cialoma Twist 18K White Gold Pavé Diamond Ring
$4,800.00

Details:
• Designer: Roberto Coin
• Collection: Cialoma
• Metal: 18K White Gold
• Diamonds: 1.28 CTTW Round Brilliant Diamonds, Pavé Set
• Signature Hidden Ruby: Yes
• Condition: Pre-Owned
• Ring Size: 7
• Weight: 

David Yurman Labyrinth Pave Diamond Loop Bracelet Hinged Small
$990.00

The David Yurman Labyrinth Pave Diamond Hinged Loop Bracelet

  • Twisted Sterling Silver

  • .98 cttw natural diamonds

  • Hinge open and close

  • Small size 5.5- 6” wrist

  • Excellent preowned

  • Original price 2950

  • Discontinued style

Chanel Coco Crush 18k Diamond Wide Band
$5,900.00

Authentic Chanel Preowned Coco Crush Ring

18k white gold 

Size 52

Large wide version

.46 cttw natural F VS+ Diamonds

Quilted Motif

Natural diamonds

Good used condition

This diamond pattern version is out of stock in the wide.

Frequently Asked Questions

Are your pieces authentic?
Yes. Every piece is carefully evaluated for authenticity using gemological testing, construction analysis, hallmark research, and decades of professional expertise in fine and estate jewelry.

Are your diamonds natural?
Yes. Diamonds are natural earth-mined unless explicitly stated otherwise. Many pieces feature antique faceting styles such as rose cuts, old mine cuts, and other historic cuts, alongside exceptional modern estate designer jewelry.

Do you only sell antique jewelry?
No. Louped Jewelry specializes in antique, estate, and collectible fine jewelry, including important antique pieces, signed designer estate jewelry, and exceptional modern pre-owned luxury jewelry.

Do you offer appraisals and authentication services?
Yes. Professional appraisal and authentication services are performed daily through our gemological laboratory by a certified gemologist and experienced appraiser with over 20 years in the jewelry industry.

What makes Louped Jewelry different?
Louped Jewelry combines gemological expertise, appraisal experience, and a deep knowledge of antique and estate jewelry to source exceptional pieces with authenticity, rarity, craftsmanship, and lasting value.

Loupe with a diamond

What is a Loupe?

Old Mine Cut diamond ring in a vintage velvet ring box.
Old Mine Cut diamond ring in a vintage velvet ring box.

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