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Authenticity Guarantee

Every piece at Masato Vintage is authentically sourced and meticulously verified by our expert team in Japan. We stand behind the authenticity of every item β€” today, tomorrow, and for a lifetime.
Our Promise

Lifetime Authenticity Guarantee

We guarantee that every item sold by Masato Vintage is authentic and as described. If an item is ever found to be not authentic, we will provide a full refund, including return shipping costs, for as long as you own the piece.

100% AuthenticEvery piece is verified by experts in Japan.
Lifetime GuaranteeOur commitment to you, always.
Full RefundIf an item is not authentic, we cover return shipping.
Our Inspection Process
Expert eyes. Lasting confidence.
Initial assessment
01
Initial Assessment

Detailed visual inspection of materials, construction, marks, and overall condition.

Hallmark verification
02
Hallmark Verification

Examination of maker's marks, metal purity stamps, and other identifying engravings.

Comparative analysis
03
Comparative Analysis

Comparison with known authentic examples, brand references, and historical data.

Expert review
04
Expert Review

Final evaluation by our specialists with decades of combined experience.

Approval and listing
05
Approval & Listing

Only pieces that pass all checks are approved and made available for purchase.

What We Examine
A comprehensive approach to authenticity
Materials
Materials

We verify the authenticity of precious metals such as gold, platinum, and silver, and assess gemstones for quality and consistency.

Hallmarks and engravings
Hallmarks & Engravings

We examine maker's marks, metal purity stamps, serial numbers, and other engravings, comparing them with verified references.

Construction
Construction

We assess craftsmanship, structure, stone settings, and finishing techniques to ensure they align with the brand's authentic production methods.

Condition
Condition

We evaluate wear, restorations, and any modifications, ensuring full transparency about the piece's condition in our listing.

Provenance
Provenance

We consider the item's history, era, and any available documentation to understand its origin and authenticity within its historical context.

Comparison with known examples
Comparison with Known Examples

We compare each piece with authentic examples from brand archives, reference guides, and our network of industry experts.

Independent Reseller

A Curated Collection
from Trusted Sources

We are an independent reseller of pre-owned fine jewelry, sourcing exceptional pieces from trusted partners, private collections, and the Japanese market. Every item is carefully verified by our in-house experts before it is offered.

Experience.
Knowledge.
A shared passion
for timeless beauty.

The Masato List

New arrivals and stories from Japan

Receive curated selections, collector notes, and editorial features.