A Grade Citrine Crystal Brazil Natural Quartz Mineral Specimen 30-50mm

A Grade Natural Citrine Quartz Crystal from Brazil

This A Grade Citrine crystal is a natural quartz mineral specimen sourced from Brazil, a region internationally recognised for producing high-quality quartz crystals. Measuring approximately 30–50mm, the specimen displays the warm golden tones that define citrine quartz, making it a visually striking addition to mineral collections and decorative displays.

The crystal has been carefully selected for its colour, clarity, and natural mineral character. Each piece represents the natural structure formed during geological crystal growth, showcasing internal features and colour variations typical of citrine quartz.

The photograph in the listing shows an example of the actual specimen you will receive, illustrating the typical colour, crystal structure, and overall appearance of the piece. Because each mineral forms naturally, every crystal will display unique features, ensuring that no two specimens are identical.

This specimen includes a Certificate of Authenticity lifetime guarantee generic card, confirming that the crystal is a genuine mineral specimen.

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Mineral Species and Crystal Classification

Citrine is a variety of quartz, belonging to the silicate mineral group and composed primarily of silicon dioxide (SiO₂). Quartz is one of the most common minerals on Earth and forms under a wide range of geological conditions.

Important mineralogical characteristics include:

• Mineral Species: Quartz

• Variety: Citrine

• Chemical Composition: Silicon dioxide (SiO₂)

• Crystal System: Trigonal

• Hardness: 7 on the Mohs scale

• Lustre: Vitreous

• Transparency: Transparent to translucent

Quartz crystals commonly grow in hexagonal prismatic forms, often ending in pyramidal terminations when they develop freely in open cavities.

The yellow colour seen in citrine is caused by trace iron impurities within the quartz lattice, which undergo oxidation during crystal formation.

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Geological Formation of Citrine Quartz

Citrine crystals typically form within hydrothermal quartz veins or pegmatite deposits, where silica-rich fluids circulate through fractures in host rock deep within the Earth’s crust.

As these mineral-rich fluids cool slowly, quartz begins to crystallise along cavity walls, gradually forming prismatic crystals over extended geological periods.

During this process, trace iron becomes incorporated into the crystal structure. Natural geological heating and oxidation of this iron give citrine its characteristic yellow to golden colouration.

These conditions can produce crystals with several natural growth features, including:

• Hexagonal crystal structure

• Natural terminations

• Internal inclusions

• Growth zoning patterns

The presence of these natural features contributes to the geological authenticity of the specimen.

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Brazilian Quartz Deposits

Brazil is one of the world’s most important sources of quartz crystals, including citrine, amethyst, and clear quartz. Many of these crystals originate from large hydrothermal quartz veins and pegmatite systems found throughout regions such as Minas Gerais and surrounding mineral-rich geological provinces.

Brazilian citrine crystals are often valued by collectors because they frequently exhibit:

• Clear natural colour

• Well-defined crystal growth

• Transparent to translucent bodies

• Attractive golden hues

These geological deposits have produced mineral specimens used in collections, decorative displays, and educational geological studies worldwide.

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Colour and Optical Characteristics

Citrine is known for its warm golden colour range, which can vary from pale yellow to deeper amber tones depending on the concentration of iron within the quartz during formation.

Typical visual features include:

• Light yellow to golden honey colour

• Glassy vitreous surface lustre

• Transparent to translucent crystal body

• Natural internal inclusions or growth features

When light passes through the crystal, the internal mineral structures can create subtle visual depth within the quartz.

These natural variations make each citrine specimen visually distinct.

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Specimen Selection and Natural Variation

Each citrine crystal offered in this listing is carefully chosen as an A Grade specimen, meaning it has been selected for good colour, attractive mineral character, and appealing crystal appearance.

Because the crystal is a naturally formed mineral, each piece will display unique characteristics, including variations in colour tone, clarity, crystal shape, and internal inclusions.

The listing photograph shows an example of the actual specimen you will receive, representing the typical quality and appearance of the crystals in this size range.

Approximate size of each crystal:

30–50mm

This size makes the specimen suitable for both display and mineral collections.

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Authentic Mineral Specimen

This crystal is a genuine natural citrine quartz specimen from Brazil. The mineral has not been artificially modified beyond basic selection and handling required for safe presentation.

Included with the specimen is a Certificate of Authenticity lifetime guarantee generic card, confirming the mineral identity of the crystal.

Product details:

• Mineral: Quartz

• Variety: Citrine

• Origin: Brazil

• Crystal System: Trigonal

• Size: Approximately 30–50mm

• Grade: A Grade natural specimen

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Ideal for Mineral Collectors and Display

Citrine quartz is widely appreciated for its vibrant colour and geological formation. Its durability and attractive appearance make it a popular mineral among collectors and enthusiasts of natural crystals.

This specimen is suitable for:

• Mineral and crystal collections

• Geological display cabinets

• Natural stone décor

• Educational mineral studies

• Unique gift items for collectors

With its golden quartz colouration, natural Brazilian origin, and A Grade selection quality, this Citrine Crystal offers an excellent example of naturally formed quartz preserved in its original mineral state.