How is amber formed? From a drop of resin to the gold of the Baltic Sea

Amber formed from the resin of coniferous trees that covered the areas of present-day Scandinavia and the Baltic region more than 40 million years ago. The resin seeped from damaged bark and then matured for millions of years beneath marine sediments, without access to oxygen, until it hardened into a stone known as the Baltic Gold. Below, you will find the entire process in 5 steps, a simple test for genuine amber, and the story of inclusions containing trapped insects.

Table of contents

• What Is Amber and Where Did It Come From?
• How Does Amber Form? The Process in 5 Steps
• A journey through time: Eocene forests
• The fossilization of resin
• Physical and chemical properties
• Inclusions in amber — a window into prehistory
• How can you tell if amber is real?
• Magic, symbolism, and beliefs — what does amber mean?
• From Raw Nugget to Jewelry — Amber Processing
• Caring for Amber Jewelry
• FAQ

What Is Amber and Where Did It Come From?

Close your eyes and imagine a dense, humid forest from more than 40 million years ago. The air is sultry, filled with the scent of pine needles and resin, while golden rays of sunlight filter through the crowns of mighty trees. It was in such conditions that natural amber was formed — a stone that defies classic mineralogical definitions. Strictly speaking, it is not a mineral, but the fossilized resin of prehistoric trees that has stood the test of time and now delights our eyes with its warm glow.

Understanding how amber forms requires us to see nature as an infinitely patient artist. The Baltic Gold, as our native succinite is often called, is nothing more than the tears of long-extinct coniferous trees that released a thick, sticky substance in response to bark injuries, sudden climate changes, or pest attacks. As this resin flowed down the trunks, it trapped insects, fragments of plants, and even bubbles of prehistoric air. This is how unique inclusions formed, which today are fascinating windows into the past.

How Does Amber Form? The Process in 5 Steps

The starting point is always the resin of prehistoric trees — amber derives its composition and warm color from it. The entire transformation, from drop to stone in jewelry, can be summarized in five stages:

1. Tree injury and resin leakage. Prehistoric amber pines responded to bark damage, pest attacks, and sudden climate changes by releasing thick, sticky resin.
2. Thickening in the air. Drops, icicles, and resin flows ran down the trunks onto the forest floor, while volatile components (including terpenes) began to evaporate.
3. Burial in sediment. Sea waters flooded the amber forests, while layers of sand, silt, and clay cut the resin off from oxygen — the anaerobic environment protected it from decomposition and oxidation.
4. Polymerization. Under the influence of pressure and temperature, small hydrocarbon molecules joined into long chains; the soft resin gradually hardened, becoming an intermediate form — copal.
5. Fossilization into amber. After millions of years of maturing in marine sediments, succinite formed—the Baltic amber that waves still wash out from the seabed and cast onto beaches today.

Amber forms in a similar way all over the world—but the varieties differ in age, the type of parent resin, and chemical composition, while Baltic amber is distinguished by its high content of succinic acid.

A journey through time: Eocene forests

To fully explore the mystery of this process, we must travel back to the Eocene epoch. The areas of present-day Baltic Sea and Scandinavia were then covered by a vast continent called Fennoscandia. It was covered by immense forests dominated by amber pines (Pinus succinifera), although modern paleobotanical research suggests that the resin may also have come from trees in the families Sciadopityaceae (Sciadopityaceae) and Cupressaceae.

The climate was much warmer then than it is today—subtropical, in fact. Violent storms, hurricanes, and seismic activity caused widespread damage to the trees. In response to these wounds, the trees produced huge amounts of resin to protect the injured tissues from infections and pests. When we analyze what amber is made of, the conditions of this prehistoric environment prove crucial—without the right humidity, temperature, and subsequent geological processes, the resin would simply have decomposed.

The fossilization of resin

The resin flowing from the tree was only the beginning of an extraordinarily long journey. Millions of years ago, as a result of tectonic movements and climate change, the amber forest regions were flooded by seawater. The resin deposits were covered by layers of sediment—sand, silt, and clay. Isolation from oxygen (an anaerobic environment) prevented decay and oxidation.

Deep within the Earth, under high pressure and at the right temperature, the process of polymerization began—the linking of small hydrocarbon molecules into long, complex chains. Over the course of millions of years, the soft, sticky resin gradually hardened, losing its volatile components (such as terpenes) and transforming first into copal and ultimately into true amber.

As natural stone experts, we encounter this wonder of nature every day at Brazi. Based on our many years of experience at Brazi Druse Jewelry, it is precisely these millions of years of maturation in marine sediments that give amber its remarkable durability and unique character. Every piece that arrives at our workshop carries the story of a long-lost world, preserved in its structure.

Incidentally, the resin needed millions of years to become stone—and do stones grow today as well? We answer this in a short fact on our blog.

Physical and chemical properties

Now that we know how amber forms, it is worth taking a closer look at its remarkable physical and chemical properties. Baltic amber (succinite) stands out from other fossilized resins due to its high content of succinic acid (from 3% to 8%). From a scientific perspective, its molecular formula is approximately C₁₀H₁₆O. For detailed information on this subject, visit the mineralogical sources on amber, which describe its complex chemical structure and the diversity of its varieties around the world.

Physically, amber is a relatively soft stone. On the Mohs scale, its hardness ranges from 2 to 2.5, which means it is prone to scratching but also exceptionally easy to work with in jewelry making. Its density is similar to that of seawater (approximately 1.05–1.10 g/cm³). This is why amber sinks in fresh water but floats freely on the surface of salt water—a property that has helped fishermen distinguish genuine amber from imitations for centuries.

Another fascinating feature is its electrostatic nature. When rubbed against wool or natural silk, amber becomes negatively charged and attracts tiny dust particles or scraps of paper. The ancient Greeks already knew about this property, calling amber electron, from which the modern word “electricity” is derived. You can find a complete overview of this stone’s significance, along with jewelry, on the amber – properties and significance collection page.

Inclusions in amber — a window into prehistory

Inclusions in amber are insects, arachnids, plant fragments, and even bubbles of prehistoric air trapped in the resin. The sticky resin acted as a natural trap: everything that became stuck in it was tightly sealed off from oxygen, allowing it to survive in an almost unchanged state for tens of millions of years.

For collectors and jewelers, inclusions are what an artist’s signature is to a painting. Specimens with clearly preserved insects or plants command the highest prices, and each such piece is one of a kind. In jewelry, a small inclusion or natural “cloud” is not a flaw but proof of the stone’s authenticity and its history spanning millions of years. In our guide how much amber costs, we explain how inclusions and other factors translate into specific prices.

How can you tell if amber is real?

The market is full of imitations made from plastic, glass, or pressed resin, so it is worth knowing how to verify amber at home. The simplest and safest method is the saltwater test, which takes advantage of amber’s low density — imitations made from synthetic materials are noticeably heavier.

The second clue is static electricity: when genuine amber is rubbed against wool, it attracts scraps of paper, while most imitations will not build up such a charge. Examining the surface can also help — natural stone is soft (2–2.5 on the Mohs scale), so it usually bears small signs of wear, whereas glass remains perfectly smooth and feels cold to the touch. When buying jewelry, however, the most reliable safeguard is a trusted source and the opportunity to examine the stone in person.

Magic, symbolism, and beliefs — what does amber mean?

In lithotherapy, amber is believed to be condensed solar energy. For thousands of years, it has been credited with magical properties — protective, purifying, and harmonizing. It is believed that wearing amber close to the body, especially around the solar plexus or throat, helps harmonize the flow of energy, relieve stress, and restore inner balance.

In symbolism, amber has represented the sun, the warmth of the home hearth, and prosperity for centuries. The ancient Romans wore amber amulets as protection against evil forces, while folk tradition held that the smoke from burning amber (which releases a pleasant, resinous scent) purifies a space of negative vibrations. From an esoteric perspective, this stone’s warm, golden hue stimulates creativity, awakens optimism, and helps overcome life’s obstacles — though we should treat this as a beautiful tradition, not a promise.

In our philosophy, every imperfection in a stone, every cloudiness or tiny inclusion, is treated not as a flaw but as a unique fingerprint of Mother Nature and undeniable proof of its authenticity. These details are what make the stone your personal talisman.

From Raw Nugget to Jewelry — Amber Processing

Knowing how amber is formed makes it easier to appreciate that jewelry made with it is not merely an adornment, but a true artifact worn on the body. Transforming a raw nugget into a stunning necklace, ring, or bracelet requires tremendous precision, respect for the material, and masterful craftsmanship. Raw amber retrieved from the sea is covered with a dull, oxidized crust. Only after it is removed does the stone’s true beauty emerge.

The processing begins with selection and cutting. The stone is then ground on special wheels, often using water to prevent overheating—amber is sensitive to high temperatures and could crack. The next step is polishing, which gives it its final, mirror-like shine. A cabochon cut (smooth and convex) is often used because it best showcases the stone’s inner character, depth, and any inclusions.

We invite you to visit our Brazi Druse Jewelry workshop in Warsaw at 61/5 Grzybowska Street, in the Platinum Towers building (00-844 Warsaw). This is where we combine this extraordinary prehistoric gift from nature with the finest silver and gold—an example is the green amber and gold set, whose setting subtly highlights the stone’s natural warmth rather than overpowering it.

Caring for Amber Jewelry

Because of its organic origin and relatively low hardness, amber requires special care. To preserve its extraordinary shine for years, follow a few simple rules. Above all, avoid contact between amber and strong chemicals, detergents, and even perfumes or hairsprays. Chemicals can dull the stone’s surface and deprive it of its natural luster.

Amber jewelry is best cleaned with a soft, damp microfiber cloth. For heavier dirt, you can use lukewarm water with a little mild soap, remembering to dry the stone thoroughly after washing. Do not use ultrasonic or steam cleaners—they can irreversibly damage the resin’s structure.

It is also important to store it properly. Since amber scratches easily, keep it in separate soft-material pouches, away from hard gemstones such as diamonds, sapphires, or quartz, and metal elements of other jewelry. Also avoid prolonged exposure to direct, harsh sunlight and heat sources such as radiators, as this may cause it to dry out and crack.