Business Details
50+ Years
experience
Your Trusted Philadelphia Area Jeweler for Fine Diamonds & Estate Jewelry
Established in 1946, John Anthony Jewelers has served the Philadelphia area as a family-owned business dedicated to providing high-quality diamonds, gemstones, and fine jewelry. Our team of GIA Graduate Gemologists ensures every piece meets rigorous standards of excellence, offering transparent education to empower informed purchasing decisions. With an in-house workshop since our founding, we specialize in custom designs, heirloom restoration, and curated antique jewelry from eras like Art Nouveau, Deco, and Edwardian.Our inventory features GIA-certified diamonds, sapphires, rubies, emeralds, and pearls, sourced through decades of trusted relationships with diamond cutters and importers. We exclusively offer fine jewelry in platinum, 14K, and 18K gold, avoiding costume jewelry or unrelated items to maintain our focus on timeless craftsmanship. Celebrating over 65 years in Bala-Cynwyd, we remain committed to serving clients with confidence, honesty, and personalized attention, whether for large acquisitions or smaller purchases.
Services
Appraisals
Custom Designs
Heirloom Restoration
Antique Jewelry Sales
Diamond Sales
Details
- Year established: 1946
Highlights and features
- Family-owned since 1946 with three generations of expertise
- GIA Graduate Gemologists ensure accurate diamond and gemstone grading
- In-house workshop for custom designs and immediate repairs
- Extensive collection of authenticated antique and estate jewelry
- Exclusive focus on fine jewelry with no costume pieces or unrelated items
Associations and certifications
- Gemological Institute of America (GIA)
- Pennsylvania Jewelers Association
- National Association of Jewelry Appraisers
Services
Appraisals
Our GIA Graduate Gemologists provide accurate, detailed appraisals for insurance, estate planning, or personal knowledge. We evaluate diamonds, gemstones, and fine jewelry using industry-standard grading systems. Our appraisals document quality factors like the 4 Cs (Cut, Color, Clarity, Carat) and market value, ensuring clients understand their jewelry's worth.
Custom Designs
Create one-of-a-kind pieces with our in-house custom design service. From concept sketches to final craftsmanship, our artisans work with platinum, 14K, and 18K gold to realize your vision. We specialize in engagement rings, heirloom adaptations, and unique statement jewelry, combining traditional techniques with modern precision for lasting beauty.
Heirloom Restoration
Preserve family legacies through expert restoration of antique and damaged jewelry. Our workshop handles intricate repairs, cleaning, and resizing while maintaining original integrity. We specialize in Art Nouveau, Deco, Edwardian, and Retro pieces, ensuring historical craftsmanship meets contemporary wearability standards.
Antique Jewelry Sales
Explore our curated selection of authenticated antique jewelry spanning iconic eras. Each piece undergoes rigorous quality checks to ensure authenticity and durability. From Victorian brooches to Edwardian filigree rings, our inventory offers timeless designs for collectors and those seeking distinctive wearable art with historical significance.
Diamond Sales
Discover GIA-certified diamonds with transparent grading based on the 4 Cs. We offer a range of shapes, sizes, and qualities, accompanied by educational guidance to inform purchasing decisions. Our inventory includes loose stones and finished pieces, all guaranteed to meet strict quality standards without inflated pricing or misleading sales tactics.
People
John Anthony Sr.
Founder
Founded John Anthony Jewelers in 1946, establishing a legacy of quality and integrity. Pioneered in-house jewelry manufacturing, setting the standard for craftsmanship that continues through three generations.
John Anthony Jr.
Graduate Gemologist & Appraiser
GIA-certified expert with decades of experience in diamond grading and jewelry appraisal. Maintains rigorous quality standards while educating clients about gemstone characteristics and value factors.
John Anthony III
Current Operator
Continues the family tradition with modern expertise in custom design and antique restoration. Combines generational knowledge with contemporary techniques to uphold the business's reputation for excellence.
Questions
What services does John Anthony Jewelers offer?
We specialize in appraisals, custom designs, heirloom restoration, antique jewelry sales, and GIA-certified diamond retail. Our in-house workshop handles repairs and bespoke creations.
How do you ensure diamond quality?
All diamonds are graded using strict GIA guidelines by Graduate Gemologists. We provide transparent evaluations of the 4 Cs (Cut, Color, Clarity, Carat) to ensure accurate quality assessment.
Do you sell vintage or antique jewelry?
Yes, we curate authenticated antique pieces from eras like Art Nouveau, Deco, Edwardian, and Retro. Each item undergoes thorough quality checks to verify authenticity and durability.
What makes your business different?
As a family-owned business since 1946, we combine generational expertise with GIA-certified professionalism. Our in-house workshop, exclusive focus on fine jewelry, and educational approach distinguish our service.
How should I care for my jewelry?
Clean regularly with a soft cloth, avoid harsh chemicals, and store pieces separately to prevent scratches. Bring items to us for professional cleaning or repairs to maintain their longevity.
Reviews (5)
Janene Sickle
Oct 18, 2021
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Never noticed this jeweler. Brought my watch in for a battery and the service was excellent. Changed it immediately and very friendly. Will definitely return.
Ryan Serdenes
Jun 27, 2020
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What a professional and efficient service! So pleased with the staff's friendly approach and quality work. I will be returning here for all my jewelry/watch related needs!
Tran Huynh
Feb 04, 2020
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I had my ring resized and watch repaired here and it was a great experience. The young staff was very friendly and took the time to explain the details. I would go here again for my jewelry needs. I highly recommend this place to everyone.
Lisa V.
Nov 05, 2019
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Outstanding! I have an old smartwatch (that I love) with a broken band. They fixed it in less than two minutes. Save the watch that I love and the cost of buying a new one. 10 stars!
S. Fran
Oct 29, 2019
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No other jeweler could solve thed priblem of making my bracelet fit my daughter's larger wrist, but these guys did beautifully and at a reasonable price.
