Emeralds:
The Spring stone. With their matchless greens, due to the presence of chrome, and their enigmatic gardens, they have fascinated and seduced since the time of Cleopatra. The beryl family.

Aquamarine:
Varying from light to deep blue, this is the stone of seafarers and their womenfolk, of the young and those who would remain young. Like emeralds they are part of the beryl family.

Other Beryls:
Morganite – pink, thanks to the manganese and the iron.
Heliodore – from the Greek ‘hélios’ meaning sun, and ‘doron’ meaning gift. Green and yellowish green.
Golden Beryl – an intense yellow.


Imperial Topaz:
A dazzling brightness ranging from ‘light champagne’ to ‘cognac’, from pale pink to red with hints of orange, golden or peachy-pink. Brazil is the only country to produce this stone on a commercial basis (Ouro Preto - Minas Gerais).

Tourmalines:
From the Sinhalese ‘turamali’ meaning multicolored. A kaleidoscope of colors and values. Certain turmalines, such as indicolite or the famous ‘Paraíba’ tourmaline can fetch very high prices.
The principal varieties are:
Verdelite – all the nuances of green.
Rubellite – from light pink to the ruby red to which it owes its name.
Indicolite – all the tones of blue.
Two-tone Tourmaline – the most common is pink and green, but they can also be pink and blue, pink and yellow...

Peridot:
Goldish green. Known in Egypt for over 3,500 years. Also known as Olivine, as its color reminds us of olive oil.

Chrisoberyls:
Alexandrite – Very rare, it appears green in natural light, but red in artificial light.
Cat’s eye – Always cut as a cabochon to acquire the effect which gives it its name.

Kunzite:
A pink variety of spodumene. Very bright.

Titanite:
Yellow, brown or green. Also known as sphene. Its name comes from titanium, the rare metal which is part of its chemical composition.

Andaluzite:
Its color ranges from a yellowish brown through bottle green to a greenish red. It appears to change color depending on the angle of vision.

Apatite:
A beautiful intense luminous blue.

Garnet:
The varieties most easily found in Brazil are almandine and pyrope. From the Greek ‘granatus’ meaning grain or seed.

Blue topaz:
In its natural state this rare stone pales over time until it becomes totally colorless. Almost all of the topaz found on the market have been irradiated or heat-treated to modify and stabilize their color.

Opal:
Known as ‘Colibri - stone’, for its set of colors. In Brazil it is only found in the region of D.Pedro II, in the state of Piaui. Amorphous Quartz.

Quartzes:
The most common colorless transparent stone, quartz is a crystalline mineral. The best known varieties are:
Amethyst: From the Greek ‘amethyein’ meaning to protect from drunkenness, it ranges from lilac to a dark violet color.
Citrine: From pale yellow to dark orange or brown. For a long time it was confused with topaz.
Rutilated Quartz: ‘Venus' Hair Stone’, ‘Cupid's darts’, is one of the more valuable varieties. The golden fibers are formed by long needle-shaped inclusions.
Dendritic Quartz: The inclusions, which look like plants or algae, are formed by the crystallization of mineral salts in the microfissures of the quartz.