AN Art Advisory & Collection Management 

Turin • Milan • The Hague • Doha

Diamonds & Jewelry

Gemological Insight
Due Diligence & Valuations
Privileged Channels

To speak of natural diamonds and jewelry is to speak of heritage itself.
They mark life’s milestones, bind generations through memory and affection,
and project legacies into the future.

At AN Art Advisory & Collection Management, we understand natural diamonds and fine jewelry as creations of timeless significance, rich in symbolism and cultural resonance. Beyond their tangible value, they embody memory, mark milestones, and project legacy. Our role is to guide collectors and families in acquiring, stewarding, and transmitting these treasures with the discretion and independence that define our practice.

We support clients in shaping heirloom collections by offering independent guidance
on the acquisition of exceptional natural diamonds and iconic jewelry pieces.

Gemological insight combined with
historical perspective and market connoisseurship

We advise across the full spectrum of natural diamonds and jewelry—from antique masterpieces and iconic designs to bespoke contemporary commissions. Our work extends to both acquisitions and discreet sales, positioning each transaction within its historical, cultural, and market context. Every recommendation is informed by gemological expertise, curatorial perspective, and a profound understanding of the dynamics that shape rarity and value.

Large fancy yellow cushion-cut natural diamond pendant on a platinum chain with white diamond drops, held in hand — diamond advisory
High jewelry flower brooch pavé-set with rubies, diamonds and emeralds held in hand — fine jewelry collection advisory
Antique diamond flower brooch with gold stamens in a velvet box alongside a black pearl bracelet watch — jewelry advisory and valuation
Victorian diamond floral spray brooch in original red leather case with a black seed-pearl bracelet watch — antique jewelry advisory
Stacked vintage gold Bulgari serpenti bracelets with diamond clasps and a ruby diamond brooch worn on wrist — fine jewelry collection management
Amalia Nangeroni, founder of AN Art Advisory, in a white blazer displaying a large diamond cuff brooch on her wrist — diamonds and jewelry advisory
Large faceted light-green gemstone held up to the light with Geneva's historic waterfront visible in the background — international diamonds and jewelry advisory
Vintage Art Deco bracelet watch with large rectangular aquamarine panels and diamond pavé bezel, worn on wrist — antique jewelry advisory and valuation
Large cushion-cut diamond solitaire ring tried on hand, with GIA grading equipment visible in the background — diamond advisory and valuation
Fine jewelry piece or natural diamond evaluated during a diamonds and jewelry advisory consultation
High jewelry piece or natural diamond from a collection advisory session — diamonds and jewelry advisory

Whether advising on the choice of an engagement ring
or identifying jewels destined to become part of a family’s legacy,
our role is to ensure that what inspires emotion and beauty
also rests on a foundation of trust, connoisseurship, and enduring value.

Due Diligence & Valuations

Every transaction is supported by rigorous due diligence, encompassing authenticity, certification, provenance, and condition. We arrange valuations for both market and insurance purposes, working exclusively with leading experts carefully selected for each piece, to provide clarity and confidence.

Privileged Channels

Through a trusted international network of designers, dealers, and galleries, we secure privileged access to rare and iconic jewels as well as exceptional natural diamonds. Acting with complete independence, we ensure that our advisory is always conducted solely in the best interests of our clients.

At AN Art Advisory & Collection Management, we frame jewelry and natural diamonds as enduring patrimony—pleasure assets in which cultural significance, lasting value, and the transmission of personal legacy are inextricably intertwined.

Baroque guild houses on the Grote Markt in Antwerp, the world's historic diamond capital — international diamonds and jewelry advisory
Historic Baroque diamond bodice ornament with intricate scrolling silver and gold metalwork, on a black velvet background — antique jewelry advisory and valuation
Antique diamond wing diadem with two feathered wings entirely pavé-set with diamonds, on a dark background — fine jewelry advisory and valuation
Amalia Nangeroni examining a gemstone with a jeweler's loupe, wearing ruby and diamond flower earrings — expert diamonds and jewelry advisory
Exceptionally large round brilliant-cut natural diamond balanced on an open palm, demonstrating extraordinary scale — natural diamond advisory
Fancy pink pear-shaped natural diamond ring shown on hand — rare natural diamond advisory and collection
Large floral brooch with white diamond pavé flowers, ruby centers and green enamel leaf accents — fine jewelry collection management and advisory
Fancy brownish-orange cushion-cut natural diamond halo ring on hand — rare natural diamond advisory
Victorian sentiment locket pendant with hand-painted miniature portrait and pearl drop bail — antique jewelry advisory and collection management
Lake Geneva waterfront in Geneva, home of leading high jewelry maisons — international diamonds and jewelry advisory
Large sculptural modernist gold cuff bracelet with organic pod-shaped design — fine jewelry advisory and collection

Book a Consultation

Whether in person or via private call,
consultations are arranged by appointment only.

The initial session is offered at a fixed fee,
while ongoing advisory is defined
in accordance with each client’s requirements.

For availability, please contact:
studio@anartadvisory.com