Rare Antique & Estate Jewelry
Curated by a Certified Gemologist
Specializing in Old Mine Cut Diamonds, Rose Cuts & One-of-a-Kind Historical Pieces
A beautifully preserved Art Nouveau ring crafted in 14-karat gold, showcasing the graceful lines and organic elegance that define the period. At its center rests a vibrant natural round sapphire weighing approximately 0.40 carats, framed by a sparkling halo of twelve Old European cut diamonds.
The diamonds have an estimated total weight of approximately 0.36 carats, averaging I–J color and SI2 clarity. Their hand-cut facets produce the soft, romantic scintillation prized by collectors of antique jewelry. The rich blue sapphire provides a striking focal point, creating a timeless combination of color and brilliance.
Delicate yet substantial, the ring weighs 3.9 grams and is currently a size 56. A charming example of authentic Art Nouveau craftsmanship, this antique ring offers both everyday wearability and enduring collector appeal.
Details
Art Nouveau, circa 1890–1910
14-karat gold
Natural round sapphire, approximately 0.40 carats
12 Old European cut diamonds
Approximately 0.36 carats total diamond weight
Diamond quality: I–J color, SI2 clarity (average)
Ring size: 56
Weight: 3.9 grams
A classic antique sapphire and diamond ring, embodying the artistry and romance of the Art Nouveau era.
A captivating Victorian pocket watch jewel combining exquisite craftsmanship, romantic design, and remarkable versatility.
Crafted in rich gold and adorned throughout with lustrous natural seed pearls, this enchanting antique features a diamond-set heart-shaped surmount that suspends a beautifully detailed pocket watch. The watch opens to reveal a striking ruby-red guilloché enamel dial, its engine-turned surface shimmering beneath translucent enamel and accented by elegant Arabic numerals.
The reverse of the watch is lavishly covered in natural seed pearls, creating a luxurious texture that perfectly complements the pearl-set diamond heart above. Delicate old-cut diamonds add brilliance and contrast against the warm gold mount.
Designed to be worn and admired, this versatile Victorian treasure may be styled as a lapel watch, pendant watch, the top half can be worn as a pendant or brooch. This is a must have for any distinguished antique jewelry collection. Pieces combining fine watchmaking, natural pearls, diamonds, and vibrant guilloché enamel are increasingly sought after by collectors for their rarity and enduring beauty.
A wonderful example of late Victorian artistry, offering both decorative charm and historical significance.
Details
Victorian Era, circa 1890–1900
Gold construction watch tests 14k on XRF Pin Tests 18k
Natural seed pearls throughout
Diamond-set heart surmount
Red guilloché enamel dial
Arabic numeral chapter ring
Convertible lapel watch / pendant watch
Original antique pocket watch swiss mechanical movement
Runs but time keeping not guaranteed. This is more of a gem piece.
Belle Époque Diamond & Pearl Transformation Jewel
An exceptional Belle Époque transformation jewel crafted in platinum-topped 18-karat gold and set with approximately 5 carats of old European and rose-cut diamonds. This highly versatile antique masterpiece features intricate openwork construction accented by natural pearls and a graceful articulated diamond drop.
Designed to be worn in multiple ways, the jewel effortlessly transforms between a brooch and pendant, with detachable elements that allow for a variety of styling possibilities. Such ingenious versatility was a hallmark of the finest jewelry houses of the early 20th century.
Combining exquisite craftsmanship, remarkable functionality, and timeless elegance, this rare antique jewel is a beautiful example of the artistry and innovation that defined the Belle Époque era.
Details
Belle Époque, circa 1900–1915
Platinum-topped 18-karat gold
Approximately 5.00 carats total diamond weight
Natural pearls
Convertible / transformation jewel
Wearable as brooch and pendant
Original articulated diamond drop
6.9 cm x 4.7 cm full brooch
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.
★★★★★ Trusted by hundreds of collectors and jewelry lovers
4.9 (849) Etsy
This exceeded my expectations; it’s such a beautiful, high-quality and extremely well-made Victorian turquoise pendant. It was perfectly described and presented in a lovely gift box. In addition, I was gifted a jewelry loupe which was such a nice touch. Thank you so much, Danielle! It was a pleasure purchasing this treasure from you; my first but I’m sure won’t be my last.
What a gorgeous ring! Danielle was wonderful to work w/, very Helpful, very kind. I think the ring — an antique w/ 3 very sparkly diamonds — & one each of blue sapphire, Emerald, & ruby — is just perfect. It was sized for me & then arrived quickly. A great Etsy purchase. A gorgeous ring & s lovely seller, who’s very knowledgeable & professional, and very sweet. Thanks, Danielle
★★★★★ Etsy buyer on May 1, 2026
This is an amazing pearl. I have never seen anything like it. I did not know that pearls could be faceted until I came across this one. It will definitely be one of my favorite pieces to wear. The color and sparkle are beautiful. It is a very early birthday present to myself, and I couldn’t be happier.
Estate Modern & Designer Pieces
Half the price.
Sourced from our Las Vegas Buy and Sell Location
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:
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
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.
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