The materials used are exclusively natural products, without any type of treatment.

Where the processing would be an integral part of the stone or where the stone would come to the cutters already treated, for any reasons related to intrinsic and typical fragility of the gem in question, this is definitely specified in the warranty card enclosed with each production.
The pieces that make up every single jewel are the result of a careful and selected research through the most important trade markets.

The materials are chosen with passion, dedication and a careful observation of each element able to emphasize the uniqueness and natural beauty that resides in the typical “inclusions” of any gem: some stones fascinate for their transparency, their purity and their sparkling light and others attract because within them is enclosed a wonderful universe of elements, colors, unique and unrepeatable reflections.

Silvia Dal Soggio collections can also be done with small variations on demand.

We remember you that, seen the materials’ naturalness and the craftsmanship of the product, each ordered piece may change slightly in tone, in shapes and in detail than what’s presented in the picture.


Aquamarine belongs to the family of Beryl, of which the most famous Emerald takes part. Its color, that remembers the sea water, is due to the presence of impurities/iron ions.

The most famous and productive deposits are in the Brazilian states of Minas Gerais, where Jequitinhonha River and other waterways transported and deposited beryl, topaz, quartz and other precious minerals used as gems.

It is said that aquamarine is part of the treasure of the legendary mermaids and, since ancient times, is considered the lucky stone of sailors: it was customary, in fact, throw into the sea Aquamarine’s amulets during storms to get the favors of the sea god and avoid that his anger would cause earthquakes and shipwrecks.


Agate is a chalcedony in different color bands, due to impurities present in its composition.

Botswana Agate comes mostly from the Motloutse River, also famous for the discovery of diamonds.
The zoning are caused by changes in chemical and physical conditions at the time of the mineral’s formation, with transitions from compact quartz to finer microcrystalline agate: zones or bands in agate may be wide, white or colored, often so thin that the thickness of 1 cm can contain thousands of them.

According to some African legends, Botswana Agate, there also called Sunset Stone, can hold back the sunlight to donate it to those people who got lost. In Africa then, it is mainly used to increase the ability to conceive, so we find it in the middle of numerous fertility’s ceremonies.


In 1959, Dalai Lama and many Tibetans took refuge in India when Chinese Communists invaded Tibet.
In their escape Tibetans brought with them jewelry, coral, amber, turquoise and mysterious DZI.
During the journey and the various stays, they exchanged these stones for their normal needs, revealing what until then had remained in their tradition: the precious stone from the kingdom of snow.

The real Dzi is a small object with great symbolic power and extraordinary prestige, closely related to the Buddhist and Tibetan tradition.
Not by chance, the meaning of the Tibetan word “Dzi” translates to shine, brightness, clearness, brilliance.
What distinguishes it from an ordinary piece of stone is the color and, more precisely, the striations and pictures that can be read on its surface. Generally black and white or brown and white, the picture must be very defined and clear, with regular and proportionate shapes, intense color, shiny look, free of imperfections.
Agate is a material with different structure, various kind of streaks and veins are absolutely normal, and they can create different forms: hence its use in the production of grains called “dzi”, produced in Tibet, Nepal, India, Burma and Thailand, very similar to the original amulets of round or elliptical shape, hand-engraved with the sacred symbols of the Tibetan spiritual tradition.
Tibetan culture continues to believe that this legendary agate recalls the protection of goddess who protect believers.


Amber is a resin produced by Pinus Succinifera in the geological era called Oligocene (about 30 million years ago!): thanks to the combination of evaporation, bacterial fermentation and oxidation, resin came out from these trees solidifies, until to petrify, giving rise to what we now know as Amber.
The main source of amber is along Polish, Lithuanian and Russian Baltic Sea coasts.
The Amber Baltic commercial heart is the Russian port of Kaliningrad (called before Königsberg). Here German knights had their venue in the fifteenth century. They exercised a ruthless control on amber’s production in Europe, punishing illegal traffickers with the sharp blade of their swords. Today Kaliningrad is synonymous of Amber production to the point that it is known also as “Special Economy Zone Yantar” (Amber, in Russian).

Amber can present different colors: the best known material is transparent with a predominance of yellow tones. Less frequent are the reddish-brown tones, and you can observe more rarely colors tending to green and to blue. To give an idea of ​​the many shades that Amber can take, just think that in Baltic amber were classified over 250 color variations, classified into three big groups: the ancient (or classic), cognac and lemon!
In ancient times Baltic Amber was considered a magic stone: fascinated by its color, people who inhabited Baltic Sea shores believed that this gem would protect from evil spirits, bring peacefulness and heal diseases…
In this regard, it was used as a medicinal stone from the Middle Ages until the early twentieth century. From Hippocrates, in ancient Greece, in fact, Amber and its resinous extracts were used to heal and relieve a wide range of physical disorders!


Sponge Coral is scientifically an Octocorallo that belongs to the family of Alcyonacee and, despite the misleading brand name, it isn’t a sponge, but a true coral and with spongy look!
This curious and fascinating coral lives in the clear and rich of nourishment waters of the South China Sea, between Taiwan and Indonesia.
Because of its low hardness and its porous nature, the Sponge Coral is often soaked with wax or colorless resins which increase the resistance and make it suitable for the use in jewelry, otherwise compromised.

Sponge Coral anciently was considered a talisman that protects from evil spirits. This is why sponge corals were mounted on pins to fix on bib or on baby’s cradle.


The Red Jasper is a sedimentary rock, composed mainly by microcrystalline quartz intensely pigmented by the Iron’s minerals, often presents in form of hematite.

The bright colors unalterable over time, the great hardness and workability, the widely available in all areas of the globe, the unrepeatable uniqueness of each piece led Jasper to decorate the most precious jewels, to seal the most important edicts, to be written even in the sacred texts.
According to the Bible, in fact, the Red Jasper is a direct gift from God and it is the foundation stone of the New Jerusalem: the Breastplate or Rational of High Priest Aaron is an evidence, ordered by God to Moses (Exodus, XIX Egyptian Dynasty, 1293-1188 BC), that gathered together 12 gems carving engraved and enchased in a rectangle measuring 3×4, a sign of the 12 Tribes of Israel.
In ancient times, then, to the Red Jasper was attributed the power to neutralize any type of spell, to send away the disturbing thoughts and to ensure divine protection: hence the use to enchase a Red Jasper in the hilt of warriors’ sword.


The main source is South Africa.

There are particular metamorphic rocks in nature, formed in ancient sedimentary basins, rich in a blue-gray fibrous mineral called “crocidolite”. In presence of aqueous solutions, crocidolite changes completely and, depending on the environment in which these changes occur, it gives rise to the three varieties of Cat’s Eye quartz, among which the most known is the Tiger’s Eye…
The chatoyancy is given precisely by isorientate crocidolite fibers which give to the mass this particular effect similar to the cat’s eye.

… An African legend says that, during a hunt, a brave warrior suddenly disappeared and for a long time no one heard about him. One day he came back to the village escorted by two tigers and with a stone around the neck with warm golden hues that, for shape and color, remembered precisely the watchful and guardian eye of this animal, whence it took the name.


Onyx is the black variety, with light white stripes, of chalcedony; so it belongs to the Quartz family.
For the use in jewelry, Onyx gets almost always a baking treatment with sugar, which makes the black color uniform and homogeneous, eliminating the white stripes. The ability of a Calcedonio to accept the color depends on (according to some scholars) from the content in water: more water is inside the stone, easier is the coloring.

Onyx is mined in Brazil, India, Madagascar and Uruguay.
In ancient Greece all the colors of Chalcedony were called “Onyx”: from white to dark brown to black. Romans used later this name only for the gems of black and dark brown Chalcedony.

Onyx is considered in the East as the stone symbol of the Tao.
It is said that onyx contains the entire universe: the explosion of this small crystal, in fact, made possible the birth of all creation; everything was asleep inside it and, exploding, it made the world.


Opal is not a true crystalline mineral, but it’s considered a hardened gelatin, a gel composed by silica and water particles, whose content may reach up to 20%.
Opal is under the form of nodules, veins or layers fill in the rock, botryoidal masses in cavities or stalagmites shapes. It is extracted from sedimentary rocks, where it fills cavity or veins.

In particular, white Opal, also called Kalmuck Agate or Cacholong Opal, which in Russian means “beautiful stone” is extracted in Austria, Czech Republic, Mongolia, Uzbekistan and in the Xinjiang region near the Kashgar River, in China.
It’s a very particular white Opal: its color, its brightness and its smooth surface make this stone very similar to porcelain.
The surface layer of silica which covers the outer surface is index of a long exposure to the elements: a feature that adds value to the workpiece.

It’s a little-known stone, but very appreciated by Germans and Italians carvers, especially in recent years.

In the past, someone wanted to give to this stone special powers, someone even believed it could make the one who possessed it invisible, and for this reason it was often pointed as the thieves’ stone. As time passes these beliefs disappeared, but the opal’s charm remained the same and kings and queens have always been bewitched.

Among many beliefs about opale, there is that to be an evil stone: the belief was born from the people, but cutters tried to carry on as much as possible, because of the difficulty in processing. Cutters avoided in this way any problem with their clients: better to earn less money than don’t get paid for a badly done job. Even this belief fell as time passes, especially when Queen Victoria wore an opal during her coronation.


The origin of Spinel name is obscure, but it probably comes from the Latin spina (thorn) for characteristic tip shape of its crystals. Another possible origin is Greek word spinter (spark), which alludes to the remarkable brilliance of this stone.

The Black Spinel is now extracted almost exclusively in Thailand, in the Bo Phloi region.
The “Nin”, as it is called there, floats in the surface layers of the soil in the form of black nuggets often in association with underlying sapphire deposits. The nuggets can also be quite large, up to easily exceed the size of a golf ball.
The best material, uniform and compact, is locally cut and faceted by small family workshops, masters in exalting the warm and moderate light of this black gem. For a stone of such noble origins and tricky to work for its hardness, a market price still exceptionally low can surprise. This is due to the lack of interest that local employees, mostly addressed in the most profitable sapphire manufacturing, demonstrated for black spinello, delegating the care of the latter to more disadvantaged families disposed to work for survival.

It is said that the black spinel is a real shield, very powerful, against aggression, negative energies, evil forces, that are rejected in the darkness from which they originated.
Talisman of those who want to penetrate the deeper meaning of existence, however it isn’t recommended to weak people or to who is inclined to depression and melancholy.


Variscite is a mineral phosphate, relatively rare, whose discovery and classification date back to 1837. Its name comes from the town of Variscia, which is the ancient name of the modern city of Vogtland in Germany.

Unlike of most famous Varisciti of Fairfield (Utah) and Nevada, which are nodular, the latest discoveries in Western Australia are in veins. But to increase the curiosity around this new discovery is the finding of native gold particles within some samples.