Create your High Jewellery with us.

One-of-a-kind pieces designed to private brief. Gouaché on paper, lost-wax casting, hand finishing. Managed by the Technical Director.

Collection I

Lava

Three pieces, one idea: a hand-carved Mexican fire opal held in cast yellow gold. Ring, earrings, pendant.

Pieces: 3 · each unique
Stone: Mexican fire opal · hand-carved cabochon
Metal: Yellow gold 18kt
Pavé: Orange sapphires · mandarin spessartite · diamonds

Side profile

I.1

Cocktail Ring

DON-ALTA-LAVA-RING · Esemplare I/I

Fire opal carved free-form, six-lobe setting. Orange sapphires and mandarin spessartite outside; white diamonds inside. Pierced shank.

Centre stone: Fire opal · carved cabochon
Outer pavé: Orange sapphires · spessartite · black diamonds
Inner pavé: White F/VS diamonds
Construction: Six-lobe corolla

I.2

Drop Earrings

DON-ALTA-LAVA-EARRINGS · Coppia I/I

Same corolla as the ring, lengthened. Fire opal centre, pavé stem, articulated opal drop. Sways with movement.

Centre stone: Fire opal
Drop: Smaller fire opal
Pavé: Orange sapphires · spessartite · black diamonds
Closure: Post with butterfly safety

Drop earrings · three-quarter view — Three-quarter view

I.3

Igneous Pendant

DON-ALTA-LAVA-PENDANT · Esemplare I/I

Irregular fire opal, cast gold recalling volcanic origin. Articulated drops. Back fully pavé-set in orange sapphires.

Centre stone: Mexican fire opal · hand-carved cabochon
Front pavé: Orange and mandarin sapphires · white diamonds
Back pavé: Orange sapphires · spessartite · full coverage
Metal: Yellow gold 750‰ · cast
Motion: Articulated drops · sway with motion

Collection II

Orchidea

Two brooches, two creatures of nature. The orchid opening into a single flower. Pavé diamonds, yellow sapphires, orange sapphires. Convertible into a pendant. The butterfly, eight centimetres of wingspan, wings in fancy coloured diamonds. Same atelier, same lost-wax, two different flights.

Pieces: 2 · each unique
Construction: Lost-wax · honeycomb ajour back
Pavé: White/fancy diamonds · yellow and orange sapphires
Versatility: Orchid: brooch or pendant · Butterfly: brooch

Donati Orchidea brooch worn on a chain-print silk shirt, portrait outdoor — Orchidea Brooch · worn on silk · portrait

Side profile

Orchidea brooch macro close-up worn — Pavé detail · worn

II.1

Brooch-Pendant

DON-ALTA-ORCHID · Esemplare I/I

Six open petals, lost-wax yellow gold. Pavé gradient: white diamonds to yellow to orange sapphires at the centre. Carved honeycomb reverse. Convertible to pendant.

Metal: Yellow gold 750‰ · lost-wax casting
Pavé: White diamonds · yellow sapphires · orange sapphires
Stones: Hand grain-set
Back: Ajour · honeycomb construction
Function: Brooch or pendant. Removable fitting
Hallmark: 750 punch · internal number · signed certificate

II.2

Butterfly

DON-ALTA-ORCHID-FARFALLA · Piece I/I

Eight centimetres wingspan. Fancy coloured diamond wings: cognac, brown, champagne, pink, lemon. Body set with fancy yellow and chameleon marquises. Articulated antennae, honeycomb reverse.

Wingspan: 8 cm
Wing pavé: Fancy coloured diamonds · cognac · brown · champagne · light pink · lemon
Body: Two marquise diamonds · fancy yellow + chameleon green-grey
Antennae: Round brilliant diamonds · articulated
Stones: Hand grain-set
Metal: Yellow gold 750‰ · lost-wax casting
Back: Ajour · honeycomb construction
Hallmark: 750 punch · internal number · signed certificate

Collection III

Duna

A single ring. A wide saddle-profile band, built on three bands of light. Champagne at the edges, white at the centre, black along the profile. The back is honeycomb-carved: light crosses the band from beneath as well.

Pieces: 1 · unique
Construction: Dome cocktail · honeycomb ajour back
Pavé: Three-tone chevron · champagne, white and black diamonds
Metal: White gold 750‰

III.1

Cocktail Ring

DON-ALTA-DUNA · Esemplare I/I

Wide saddle band. Three chevron pavé bands: champagne, white, black. Carved honeycomb reverse.

Construction: Wide cocktail band · saddle profile
Outer pavé: Champagne brown diamonds
Centre pavé: White F/VS diamonds
Profile: Treated black diamonds · perimeter outline
Metal: White gold 750‰
Back: Ajour · honeycomb construction

Collection IV

Flora

Two rings, two flowers. The iris opens its asymmetric petals in a violet-to-blue gradient, hand-carved in white gold. The duet is a botanical toi-et-moi: two five-petal corollas, white diamonds and yellow sapphires, a tsavorite leaf holding the stem together.

Pieces: 2 · each unique
Metal: White gold 750‰ · lost-wax casting
Pavé: Polychrome sapphires · white diamonds · tsavorites
Construction: Lost-wax petals · honeycomb ajour back

IV.1

Iris

DON-ALTA-FLORA-IRIDE · Piece I/I

Six asymmetric petals. Falls: violet and cobalt sapphires. Heart: diamond pavé. Beard: yellow sapphires. Standard: white pavé, ajour edge. Carved honeycomb reverse.

Centre stones: Polychrome sapphires · violet → blue gradient
White pavé: White F/VS diamonds · heart and standard petal
Beard pavé: Yellow sapphires · iris beards
Metal: White gold 750‰ · lost-wax casting
Back: Ajour · honeycomb construction
Hallmark: 750 punch · internal number · signed certificate

IV.2

Duetto

DON-ALTA-FLORA-DUETTO · Piece I/I

Two facing flowers. Five petals each, white diamond pavé, yellow sapphire stamens. Tsavorite leaf visible in profile.

Construction: Toi et moi · two five-petal corollas
Petal pavé: White F/VS diamonds · full coverage
Stamens: Yellow sapphires · cluster per flower
Leaf: Green tsavorites · pavé between the corollas
Metal: White gold 750‰
Wearability: Low profile · single Y-stem

ConfidentialityFull NDA

DirectionItalian Technical

What We Make

Three output types.

Three output families. The same study method, different lead times and thresholds.

Parures

Coordinated sets of 3 to 5 pieces sharing one principal stone or one technical language. Ring, earrings, necklace, bracelet, possibly a brooch. The client decides which pieces to include.

II.

One-of-a-kind

One-of-one pieces designed around a principal stone selected together. Brooches, pendants, cocktail rings, evening earrings. The piece is signed and never re-enters the catalogue.

III.

Ceremonial pieces

Tiaras, diadems, crowns. Specific structural systems: titanium core, articulated joints, safety closures. Full photographic documentation for archive and insurance.

Reproducibility

Not on the principal stones. Yes on the architecture.

The principal stones in the pieces shown are unique and cannot be replicated. What can be reproposed is the language of the collection. Yellow gold corolla, polychrome pavé of orange sapphires, spessartite, black diamonds. On alternative principal stones selected together at brief stage.

Possible substitutions on the Lava collection: rubellite, paraiba tourmaline, red spinel, mandarin garnet, morganite, tanzanite. On the Orchid brooches: the pavé can be reproduced on an alternative design, in white or rose gold, with a colour palette adapted to the client. The Butterfly can also be requested at reduced scale (5–6 cm) or in a monochrome palette (champagne only, brown only, white only). On the Flora collection. The Iris and Duet rings. The colour gradient of the pavé is fully customisable: the iris's violet sapphires can become fuchsia-pink, green (tsavorites), or yellow; the duet can be requested in yellow or rose gold with stamens in orange sapphires or rubies.

Commission process

Six steps.

From listening to the client to handing over the piece. Every step is shared, documented, signed by the Technical Director and archived under NDA.

Client Brief

First call with Technical Direction. Listening to the needs: who will wear the piece, on which occasion, what message. Verbal brief, budget constraints, emotional constraints. No gouaché yet. Only listening.

1 week

Creative Sketch

Freehand gouaché on paper signed by the Technical Director. Three alternative directions on the same principal stone. Technical cross-section with measurements. The moment the piece takes visual form.

2 weeks

III

Technical Study & Quote

Final selection of direction. Binding quote, definitive timeline, alternative options on secondary gemstones. Signed estimate + 30% deposit. Full NDA on opening.

2 weeks

Shared Reviews

Two rounds of review included. In the atelier in Bangkok or by video call with the client. Formal validation of the final drawing. Approval of the wax prototype before casting. 40% of the balance at step close.

2–3 weeks

Production & Shared QC

Casting, assembly, setting, finishing. Four Quality Gates, photographed and shared with the client before progression. Each gate carries client veto. No step advances without signature.

6–10 weeks

Delivery

Final 30% balance. Delivery includes certificate of uniqueness signed by the Technical Director, full photographic documentation, gemmological report on the principal stones (GIA, SSEF, or Gübelin laboratory). Collection in atelier or insured worldwide shipping.

+ documentation

Exceptional pieces

One-of-a-kind.

Built to private brief. Certified-provenance gemstones. Full in-house production. Certificate of uniqueness. Viewing by appointment.

Duetto

Duetto.

Toi-et-moi cocktail ring. Emerald-cut tourmalines: cognac and chrome green. Pavé shank, channel baguettes. Yellow and white gold 750‰.

Duetto · three-quarter view · pavé shank and gallery — Three-quarter view · pavé shank · gallery DON-ALTA-RNG-DUETTO-02

Stones: Emerald-cut tourmalines · cognac and chrome
Pavé: Round brilliant diamonds · side baguettes
Metal: Yellow and white gold 750‰

Rubellite

Rubellite.

Cushion rubellite centre. Forked shank: pink sapphire gradient above, white pavé below. The stone stands, not rests.

Rubellite · back view, diamond pavé dome — Back view · pavé dome · ruby accent DON-ALTA-RNG-RUBEL-02

Centre stone: Cushion-cut rubellite
Sapphires: Pink princess-cut · channel-set gradient
Pavé: Round brilliant diamonds · full dome and shank
Metal: White gold 750‰

Fiocco

Fiocco.

Matching bow brooches, pair. Ceylon blue sapphires (left) and Burmese rubies (right) full pavé. Pear diamond / heart diamond centres. Black rhodium gold. Convertible.

Stones: Ceylon sapphires and Burmese rubies in pavé
Centre diamonds: Pear shape on the blue · heart shape on the red
Metal: Black-rhodium white gold
Function: Brooches · pendants · hair clasps

Piuma

Piuma.

Sculptural feather brooch. Yellow gold rachis, granulated barrel. Multi-gem pavé: fancy yellow diamonds, padparadscha sapphires, spessartite garnets. Fully ajour reverse.

Piuma · back view · ajour pavé construction — Back · ajour pavé · light passes through DON-ALTA-BRC-PIUMA-BACK

Gems: Fancy yellow diamonds · padparadscha sapphires · spessartite garnets · cognac and champagne diamonds
Rachis: Yellow gold 750‰ · granulated barrel
Construction: Front mosaic · back fully ajour
Availability: Viewing by appointment

Sole

Sole.

Domed pavé earrings. White diamond field, cushion orange sapphire accents. Yellow gold frame, clip-on.

Sole · worn — Worn · earlobe proportion DON-ALTA-EAR-SOLE-WORN

Stones: Round brilliant diamonds · scattered cushion orange sapphires
Metal: Yellow gold 750‰
Closure: Clip-on with safety

Atlantide

Atlantide.

Large London Blue topaz. Front: thin halo, princess diamond. Reverse: Ceylon sapphire weave over the stone. Two architectures, one gem.

Atlantide · back Trama · cage of Ceylon sapphires — Back · weave of Ceylon sapphires + diamonds DON-ALTA-PND-TRAMA-01

Centre stone: Emerald-cut London Blue topaz
Diamond: Princess-cut in rotated halo
Back · Trama: Ceylon blue sapphires and diamonds in intertwined arches
Metal: White gold 750‰

Mosaico

Mosaico.

Hundreds of calibrated cabochons: tanzanites, rubellites, pink sapphires, violet spinels. Byzantine mosaic gradient. Cushion tanzanite keystone.

Upper stud: Cushion-cut tanzanite
Tesserae: Cabochons · tanzanite, rubellite, pink sapphire, violet spinel
Frame: Round brilliant diamond pavé
Metal: Black-rhodium white gold

Vendemmia

Vendemmia.

Harvest cluster. Rose-cut diamond grapes, repoussé oxidised gold leaves, tsavorite accents. Pavé tendrils.

Vendemmia · back view with pin — Back · pin + carved settings DON-ALTA-BRC-VENDEMMIA-BACK

Grapes: Rose-cut diamonds · individual settings
Leaves: Repoussé oxidised gold · green tsavorites
Tendrils: Round brilliant diamond pavé
Function: Brooch · unique piece

Eclissi

Eclissi.

Central marquise, pointing up. Flanked by diamond half-moons tapering down, interrupted by carved black onyx. White and black aligned.

Three-quarter · carved onyx profile · pavé back DON-ALTA-RNG-ECLISSI-01

Centre stone: Marquise diamond · vertical setting
Side stones: Four graduated half-moons
Accents: Carved black onyx moons
Metal: Platinum 950 or white gold 750‰

Certified-provenance gemstones (Kashmir, untreated Burma, fancy-colour with GIA report) available with full gemmological report. Trade Login required.

Next Step

Open a brief.

High jewellery commissions handled directly by Technical Direction. First call 45 minutes, no charge. Feasibility study with binding quote within two weeks.

Contact Technical Direction ← Back to Catalogue