Classic among gemstones
Aquamarine
& Tanzanite
Gemstones
Wonders of Nature
Gemstones are formed deep inside our Earth over millions of years. Each one is the result of unique geological processes and carries its own individual history within it.
The variety of their colors, shapes, and structures makes gemstones truly special. No two gemstones are alike. Natural variations in color, clarity, and texture give each specimen its individual character.
This uniqueness has fascinated us for generations. With experience, craftsmanship, and a trained eye for the distinct features of every gemstone, we aim to highlight what nature has created over millions of years.
Santa Maria
Aquamarine
We grew up with aquamarine, our signature gemstone.
This blue variety of the beryl group is characterized by its high degree of hardness of 7.5 to 8 and covers all shades of blue, from glacier blue to a deep sea blue. The most valuable color variant is the famous, deep-blue Santa Maria, which gets its name from the mine of the same name in Ceará, Brazil.
Origin: Africa, Brazil
Red · Blue · Pink
Spinel
With a hardness of 8, spinel is one of the hardest colored gemstones. It occurs in various color varieties, of which red spinel is the most valuable.
For a long time, the center stone of the United Kingdom's Imperial State Crown was mistaken for a ruby. In fact, however, it is a spinel, which gained significant prominence due to this discovery.
Origin: Myanmar, Tajikistan, Tanzania, Vietnam
Vanadium Beryl · Golden Beryl · Green Beryl · Red Beryl · Morganite
Beryl
Beryl, which is primarily found in Africa and Brazil, appears in almost all pastel shades.
The best-known varieties of beryl include green emerald, yellow golden beryl, pink morganite, and also our signature stone, blue aquamarine.
Origin: Africa, Brazil
Paraiba · Rubellite · Mint green · Green · Pink · Brown · Multicolored · Chrome tourmaline
Tourmaline
The tourmaline gemstone group is characterized above all by its unique variety of colors.
Tourmalines occur in bi-colored or even tri-colored varieties and, when perfectly crystallized, have a trigonal shape that makes them very difficult to work with. One of the most expensive varieties, which has gained significant value in recent years, is the Paraíba tourmaline from the Brazilian state of the same name.
Origin: Afghanistan, Africa, Brazil
The rarest tourmaline variety
Paraíba Tourmaline
The Paraíba is one of the most expensive varieties in the tourmaline family and has gained significantly in value in recent years due to its rarity.
It is named after, and originates from, the Brazilian state of the same name. Its intense coloring, ranging from mint green to vibrant neon blue, which is particularly sought after, is due to the trace element copper.
Origin: Afghanistan, Africa, Brazil
Only in Tanzania
Tanzanite
A handful of gemstone cutters from Idar-Oberstein and the surrounding area, including Arnoldi, marketed tanzanite to the New York jeweler Tiffany’s in the late 1960s, which is how the stone gained its fame.
The unique, deep-blue tanzanite is found only in Tanzania and is characterized in its natural form by its trichroism.
Origin: Tanzania
Alexandrite · Cat's eye
Chrysoberyl
The lesser-known neon-colored variety of chrysoberyl offers a fascination all its own. Alexandrite changes color: it is green in natural light, but shines red under artificial light.
Despite its name, chrysoberyl does not belong to the beryl group; it is characterized by its high hardness of 8.5 and catches the eye with its luminous brilliance.
Origin: Africa, Brazil, Ceylon, Russia
The green spring stone
Peridot
One of the few gemstones that only occurs in green is peridot.
Its extraordinary coloring helped the "stone of spring," which was first discovered on St. John's Island in Egypt, achieve the fame it enjoys to this day.
Origin: Africa, North America, Norway, Pakistan
Green Garnet
Tsavorite
Due to its rarity, the price level of this gemstone has been rising for years.
The vibrant, natural green is unique and varies from light green to a rich jungle green, which is particularly sought after. Tsavorite crystals are rather small, but of exceptional purity and clarity.
Origin: Tanzania
Demantoid · Tsavorite · Mali Garnet · Mandarin Garnet · Rhodolite · Red Garnet · Hessonite · Spessartine
Garnet
The garnet is particularly captivating due to its intense, strong, and dark colors.
The gemstone's high refractive index creates an extraordinary brilliance across all shades of color. Hubert Arnoldi was one of the pioneers who introduced the mandarin garnet to the market.
Origin: Africa
Contact
DO YOU HAVE ANY QUESTIONS? WE ARE HAPPY TO HELP.
Are you looking for a unique piece, planning a collection, or do you have a question? Please feel free to contact us personally. You can meet us at international trade fairs, during our sales trips, or directly at our location in Idar-Oberstein. From here, we advise and supply our customers worldwide.
