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A Complete Guide to Hessonites (Gomed)

This article serves as part of an ongoing series of profiles on the different varieties of precious & semi-precious gemstones. To view the entire list, click here.

The Hessonite, also known as Gomed stone in India, is a captivating gemstone that holds a unique allure due to its distinctive appearance and fascinating metaphysical properties. As a prominent member of the garnet family, the Hessonite showcases a range of shades from deep red-brown to fiery orange-brown, often resembling the rich hues of autumn leaves. This gemstone is particularly renowned for its association with the planet Rahu in Vedic astrology.

Given its distinct colour, metaphysical significance, and mythical ties, Gomed holds a special place among the array of precious and semi-precious gemstones offered by Precious Earth. Its unique charm, reputed effects, and fascinating mythological association make it a sought-after choice for those looking to incorporate both aesthetic appeal and spiritual meaning into their lives. Whether worn as jewellery or kept as a treasured keepsake, Hessonites continue to capture the imagination of gemstone enthusiasts and spiritual seekers alike.

Fun fact: In ancient Hindu mythology, Hessonite is associated with the story of the churning of the ocean (Samudra Manthan). Legend has it that during this cosmic event, many precious treasures emerged from the ocean depths, including the Gomed stone. It is believed that wearing this gem can protect the wearer from negative energies and bring about positive transformations, just as it played a vital role in the mystical narrative of the churning ocean. This connection between Gomed and a legendary tale adds a layer of enchantment to its already intriguing character.

The following is a deep-dive into everything you need to know about the Hessonite, or gomed stone.

1. Hessonites - Formation & Occurrence

The formation of the gomed stone (hessonite) begins in metamorphic environments, where high temperatures and pressures facilitate the growth of these beautiful gemstones. Typically, hessonites are found in contact or regional metamorphic rocks, often associated with manganese-rich rocks and certain types of schists. These rocks undergo significant changes due to the Earth's internal heat and pressure, leading to the transformation of minerals and the development of hessonite crystals.

A rough Hessonite (Gomed) crystal

The mineral grossular, which forms the basis of hessonites, is composed of calcium aluminium silicate. The distinctive reddish-brown to orange colour of the gomed stone is attributed to the presence of iron and manganese impurities within the crystal lattice of the garnet. As mineral-rich fluids percolate through the metamorphic rocks, they carry these elements and aid in the growth of hessonite crystals over time. This slow and intricate process results in the unique and captivating appearance of hessonite gemstones.

Hessonites are chiefly mined in Sri Lanka (Ceylon) and India, but deposits have also been found in Brazil and Africa.

2. Where Are Hessonites Found?

Geographically, hessonite has been found in various regions across the world, adding to its allure and charm. Historically, the primary sources of hessonite were Sri Lanka, India, and parts of Africa. Sri Lankan hessonites, also known as Ceylonese gomed, are known for their exceptional transparency and brilliant colour, and are particularly esteemed. In India, especially the states of Rajasthan and Orissa, have been known to yield hessonites of remarkable quality.

A significant occurrence of hessonite deposits, however, has been discovered in recent times in the northern regions of Tanzania and Kenya. These deposits have gained attention for their distinctive "cinnamon stone" appearance, characterized by a deep and fiery reddish-brown colour that closely resembles the spice. These African hessonites have not only increased the availability of the gemstone but also introduced a new dimension of aesthetic diversity to the market.

3. The Colours of a Hessonite

The gomed stone typically exhibits a range of colours within a specific reddish-brown to orange-brown spectrum. The primary colours of hessonite include:

    • Reddish-Brown: The most common colour of hessonite is a deep reddish-brown, resembling the hues of autumn leaves. This colour is often associated with traditional hessonite gemstones and is considered highly desirable in both astrological and jewellery contexts.
    • Orange-Brown: Hessonites can also lean towards an orange-brown colour, which adds warmth and vibrancy to the gemstone's appearance. These shades can range from a lighter, golden-brown to a richer, fiery orange-brown.
    • Cinnamon: In recent times, hessonite deposits from Tanzania and Kenya in Africa have gained attention for their unique "cinnamon stone" appearance. These hessonites exhibit a deep and intense reddish-brown colour that closely resembles the colour of cinnamon, giving them their distinctive nickname.
    • Yellowish-Brown: Some hessonite specimens might display a slightly yellowish undertone in their brown colour. This variation adds a subtle complexity to the gemstone's appearance.

      Hessonites occur in a range of red, yellow, & brown hues (Source: International Gem Society)

      In general, a deeper reddish-brown colour, that is uniformly saturated throughout the body of the gem, is the most desired in a gomed stone. It's important to note that while hessonite primarily occurs in shades of reddish-brown and orange-brown, the exact colour can vary based on the source and specific geological conditions under which the gemstone formed. The intensity, saturation, and distribution of these colours can also vary, influencing the gemstone's overall appeal and value.

      4. Common Inclusions in Hessonites

      As with any gem, the gomed stone can contain a variety of inclusions, offering insights into its formation and geological history. These inclusions not only impact the gem's visual appeal but also serve as essential indicators for gemmologists and collectors.

      One of the most common types of inclusions found in the gomed stone is the presence of crystal inclusions. These are tiny mineral formations that become trapped during the gem's growth. Among the crystals commonly found within hessonites are apatite, calcite, diopside, spinel, and zircon. Apatite, appearing as needle-like formations, weaves intricate patterns within the gem. Calcite's presence might add a touch of milky translucence. Diopside and spinel crystals, sometimes appearing in octahedral or dodecahedral forms, add a three-dimensional aspect to the gem's interior. Zircon crystals with their high refractive index contribute to the gem's overall brilliance.

      Crystal inclusions within a Hessonite gem

      One of the most enchanting effects found in hessonite gemstones is the "scotch in water" effect, also known as the "heat-wave" effect. This optical phenomenon arises due to the presence of microscopic inclusions that scatter light as it passes through the gem. This scattering creates a play of light reminiscent of the visual distortion created when a drop of oil is placed in water or when observing an object through a glass of scotch. This mesmerizing effect lends hessonites a dynamic appearance, almost as if the gem is alive with movement.

      The ”Scotch in Water” effect of a Hessonite

      This "scotch in water" or "heat-wave" effect adds a layer of intrigue to the gemstone. When the gem is gently rotated under a light source, waves of colour seem to ripple across its surface, creating a captivating visual dance. This effect is a result of the gem's internal structure interacting with light in a way that produces this enchanting display.

      In general, hessonite gems hold within them a world of natural wonders, from the intricate crystal inclusions that provide glimpses into their history to the captivating optical effects like the "scotch in water" phenomena. These inclusions and effects contribute to the gem's allure, making the gomed stone not just a beautiful ornament but also a window into the intricate processes that shaped these gems over countless years. Collectors and admirers are drawn to hessonites for both their visual splendour and the stories they can tell about the Earth's ancient past.

      5. Common Treatments & Enhancements of Hessonites

      Hessonite gemstones, commonly known as "Gomed" or "Gomedhikam," are cherished for their natural, untreated state. Unlike many gemstones that undergo treatments for colour or clarity enhancement, hessonites are typically found and appreciated in their unaltered form. This is primarily due to their inherent reddish-brown to orange-brown hues that hold special astrological significance, resonating with the energies of the planet Rahu in Vedic astrology. Collectors and enthusiasts value the authenticity of untreated hessonites, as they offer a genuine connection to the Earth's natural processes and a unique display of the gem's true colours. This preference aligns with the desire for genuine gemstones and aligns with the ethical consideration of purchasing gemstones in their most natural state. As a result, untreated hessonites are sought after for their distinct beauty, astrological resonance, and the assurance of acquiring a gem that has undergone minimal artificial alteration.

      Mineral Grossular Garnet
      Colour Span Light yellowish-brown, to a deep reddish-brown
      Popular Origins Sri Lanka (Ceylon), India, Africa
      Mohs Hardness 7.0 - 7.5 (on a scale of 10)
      Common Treatments Usually untreated
      Birthstone January

      Hessonites (Gomed) - A Quick Snapshot

      6. Evaluating the Quality of a Hessonite

      Evaluating the quality of a gomed stone requires a comprehensive understanding of the gemstone's 4Cs: cut, clarity, carat, and colour. Each of these factors contributes to the overall value and appeal of the hessonite, ensuring that you are acquiring a gemstone of exceptional quality and beauty. Additionally, the source of origin of a Hessonite is also important in determining its value:

        • Colour: Colour is perhaps the most defining characteristic of a hessonite gem. The finest hessonites exhibit a warm and intense orange-brown colour, often resembling the rich hue of spiced honey. The colour should be even throughout the gemstone, without any noticeable zoning or uneven distribution. Gems with pure and vivid colour saturation are highly prized. However, personal preference also plays a role in appreciating colour, as some individuals might find a slightly different shade more appealing.
        • Clarity: Clarity refers to the presence or absence of internal or external imperfections, often referred to as inclusions. While hessonites can have natural inclusions due to their formation process, gems with higher clarity are generally more valuable. However, the impact of inclusions on hessonites can vary; some inclusions can enhance the gem's uniqueness and character. A balance must be struck between clarity and the presence of inclusions that add to the gem's charm without significantly affecting its beauty.
        • Cut: The cut of a hessonite gem plays a crucial role in its overall appearance and brilliance. A well-cut hessonite will showcase the gem's inherent fire and colour while optimizing light reflection. The cut should be symmetrical and proportionate, with facets that interact harmoniously to create a dazzling play of light. A poorly cut hessonite can appear dull and lifeless, diminishing its visual allure.
        • Carat Weight: Carat weight measures the size of the hessonite gemstone. Larger hessonites are generally rarer and more valuable, but it's essential to remember that size isn't the sole indicator of quality. A smaller hessonite with exceptional colour, clarity, and cut can be more valuable than a larger one with inferior attributes. Assessing carat weight in conjunction with the other factors ensures a more accurate evaluation of the gem's quality.
        • Origin: Hessonites from certain regions, mainly Sri Lanka (Ceylon), are highly regarded for their exceptional quality and colour in comparison to other regions. However, India and Africa have also been known to produce high-quality gems, although they are considered inferior to Ceylonese gomed stones.

          When evaluating the quality of a hessonite gem, it's crucial to consider these factors in harmony. A gem that excels in one aspect but lacks in another might not be as valuable as one that possesses a well-rounded combination of attributes. Furthermore, the intended use of the hessonite can influence which characteristics are prioritized. For instance, a collector might value colour and clarity more, while a jeweller might prioritize a well-proportioned cut for optimal setting in jewellery.

          Lastly, engaging with reputable and knowledgeable gem experts or jewellers can provide valuable guidance in evaluating hessonite gems. These professionals can offer insights into the gem's origin, the specific factors that contribute to its quality, and its market value. By considering cut, clarity, carat, and colour collectively and understanding their interplay, you can make an informed and confident choice when acquiring a high-quality hessonite gem that's a testament to Earth's natural beauty.

          7. How Much Do Hessonites Cost?

          The cost of hessonite gemstones can vary widely depending on several factors, including the gem's size, quality, colour, clarity, and overall market conditions. For smaller, lower-quality hessonites with more inclusions and lighter colour, you might find prices starting around $10 to $50 per carat. These could be suitable for those looking for budget options or for use in jewellery where size is more important than exceptional quality.

          Gomed stones with better colour, clarity, and overall quality could range from $50 to $200 per carat. These gems are likely to have a more attractive colour and fewer noticeable inclusions, making them suitable for those seeking a balance between quality and cost.

          It’s also important to note that the finest variety of hessonites come from Ceylon (Sri Lanka), and as such, command a value-premium compared to hessonites from Africa or India. These Ceylonese hessonites, depending on their individual properties, can range from about $30 to $300 per carat, and some rarer specimens can fetch even higher prices.

          8. Hessonites in Astrology

          The gomed stone is a cherished gemstone in astrology and holds profound significance. Governed by the planet Rahu, it wields unique celestial energy that influences one's destiny. Aligned with the zodiac signs of Gemini, Libra and Taurus, the gomed stone carries attributes that can enhance intuition and spiritual growth. As the birthstone for January, it resonates strongly with individuals born during this month, empowering them with its distinctive energies. This gem's astrological importance lies in its ability to foster personal transformation, stimulate intuition, and guide individuals on their cosmic journey.

          Hessonites (Gomed) in Astrology

          In general, the hessonite or gomed stone offers the following benefits to its wearer:

            • Rahu’s Cosmic Energy: Hessonite's astrological importance stems from its connection with the celestial body Rahu. In Vedic astrology, Rahu is considered a shadow planet with potent and transformative energies. Hessonite acts as a conduit for these energies, offering individuals the chance to tap into a unique cosmic force that can influence their destiny and life path.
            • Personal Transformation & Challenges: The gomed stone is believed to play a role in personal transformation. Its energies are said to help individuals overcome challenges and obstacles by providing them with inner strength, resilience, and a deeper understanding of their life's purpose. This gem's energy is thought to encourage growth through adversity, fostering a sense of courage and determination.
            • Guidance & Evolution: At its core, gomed’s astrological significance lies in its ability to guide individuals towards heightened intuition, protection, and spiritual evolution. By wearing or incorporating hessonite into their lives, individuals seek to connect with its energies to gain insights, find direction, and embark on a journey of self-discovery. The gem is believed to create a bridge between the physical and spiritual realms, offering support in navigating life's complexities.
            • Karmic Insights: Hessonite's astrological significance extends to its connection with karmic patterns. Rahu, the planet it's associated with, is often linked to karmic experiences and lessons. Hessonite is believed to facilitate a deeper understanding of one's karmic journey, aiding individuals in recognizing patterns from past lives and providing insights into the challenges and opportunities presented in their current life.
            • Emotional Balance & Intuition: Hessonite's influence also encompasses emotional balance and intuition. As an aid to emotional healing, it is thought to help individuals release past traumas and emotional blockages. Additionally, its energies are believed to amplify intuitive abilities, assisting individuals in trusting their inner guidance and making decisions that align with their higher selves. This aspect of hessonite's astrological significance supports personal growth and spiritual development.