DESCRIPTION: Crimson held in crystal. Geometry carved in relief. Under ultraviolet light, a vivid red glow awakens another side of this ruby from Mogok Valley, Myanmar. Its character unfolds through three powerful elements: a recognisable hexagonal outline, rich colour and a pronounced triangular Record Keeper that gives the surface an almost sculptural presence. Under ordinary reflected light, the ruby reveals raspberry red and magenta tones, with deeper crimson passages beneath a veil of pale surface textures. Fine lines cross the broader faces, catching the light and creating a delicate contrast against the richer colour below. The appearance is textured and expressive, with each turn revealing a different balance of colour, reflection and relief. The Record Keeper commands particular attention. Its triangular geometry is strongly expressed, with pronounced differences in surface level giving the marking depth and a physical presence. Light catches its boundaries while shadow gathers along the transitions, allowing the figure to stand out within the surrounding face. This is a Record Keeper with personality. Its appeal extends beyond the recognisable triangular outline to the way that outline occupies the crystal surface. The relief gives it a sculptural quality, creating a feature that changes visibly as the direction of illumination shifts. From one angle, the edges lead; from another, the depth of the figure becomes the dominant impression. Around this focal point, the ruby retains a clear hexagonal outline. Six sides frame the broad face, giving the specimen an immediately readable geometry. Viewed obliquely, its flatter proportions become more apparent, and the relationship between the broad faces, narrower sides and uneven surface relief adds further interest to the form. Light passing through the crystal reveals brighter red and pink passages within the body. Darker areas and visible internal features interrupt this illumination, giving the colour depth and variation. The photographs taken with illumination from below capture this luminous appearance, while the reflected light views place greater emphasis on the surface textures and triangular marking. Under ultraviolet light, the ruby displays an exceptionally vivid red fluorescence. This response adds a separate visual experience to the specimen, bringing an intense glow to a crystal already distinguished by its colour and form. The contrast between its ordinary appearance and its UV response gives it an additional dimension for examination and display. From its six sided silhouette to the pronounced relief of its Record Keeper, this ruby carries a strong and individual identity. Its collecting appeal lies in the combination of these features: a richly coloured body, a surface with sculptural depth and a striking fluorescent response. Each offers a different way to appreciate a crystal with considerable presence. SPECIFICATIONS: • Weight: 2.67 g • Weight in carats: 13.35 ct • Dimensions: 14 × 13.5 × 6 mm • Origin: Mogok Valley, Myanmar • Mineral species: Corundum • Variety: Ruby • Crystal system: Trigonal • Crystal habit: Tabular crystal with a well defined hexagonal outline • Crystal morphology: Broad faces, six sided outline and pronounced surface relief • Colour: Raspberry red to magenta, with deeper crimson areas • Colour behaviour: Rich red and magenta under reflected light, with brighter red and pink passages under transmitted illumination • Transparency: Translucent, with variations in light transmission across the body • Lustre: Vitreous on reflective areas, subdued across more textured surfaces • Principal surface feature: Prominent triangular Record Keeper with strongly expressed relief • Additional surface features: Fine linear markings, pale textured passages and uneven crystal surfaces • Internal features: Visible inclusions, internal planes and contrasting areas of light transmission • UV fluorescence: Exceptionally vivid red response • Photographic illumination: Reflected light and transmitted illumination from below • Hardness: 9 on the Mohs scale NOTABLE POINTS: • Sculptural Record Keeper A prominent triangular marking displays pronounced relief, giving the crystal face depth and a distinctive sculptural character. • Strong Surface Personality The relationship between the triangular outline, surrounding textures and changes in surface level makes the marking a central feature of the specimen. • Clearly Defined Hexagonal Outline Six sides frame the broad face and establish an immediately recognisable crystalline silhouette. • Rich Raspberry and Crimson Colour Red and magenta tones extend across the body, with deeper crimson areas adding contrast and visual depth. • Exceptionally Vivid UV Fluorescence Under ultraviolet light, the ruby produces a striking red glow that adds another dimension to its display. • Luminous Transmitted Colour Illumination from below reveals brighter red and pink passages within the translucent crystal. • Relief Revealed by Light Changing the lighting angle brings different boundaries and surface transitions into focus, emphasising the Record Keeper’s depth. • Expressive Surface Textures Fine pale lines and textured passages create intricate detail across the richer coloured faces. • Tabular Crystal Form Broad faces and narrower sides give the ruby a distinctive profile that changes appreciably with viewing direction. • Mogok Valley Provenance The specimen comes from Mogok Valley, Myanmar, a locality closely associated with ruby. • Complementary Viewing Conditions Reflected light reveals surface detail, transmitted light opens the interior, and ultraviolet light reveals the fluorescent response. • Combined Morphological and Optical Appeal Hexagonal form, pronounced Record Keeper relief and vivid fluorescence provide several complementary reasons to examine and preserve the specimen. COLLECTOR’S INTEREST: This ruby offers a compelling relationship between colour and sculpture. Its red body establishes the first impression, while the pronounced Record Keeper gives the eye a feature to follow across the surface. The triangular figure has sufficient relief to become an integral part of the crystal’s visual identity. That relief strengthens its appeal as a collector’s specimen. The marking can be explored through the interplay of light and shadow, with different viewing angles revealing its boundaries and depth. Its interest lies both in the geometry itself and in the way that geometry rises and falls across the face. The hexagonal outline gives this surface detail a coherent frame. Seen face on, the ruby presents a broad, angular silhouette. Turned towards the side, it reveals its tabular proportions and the uneven contours that contribute to its sculptural appearance. These changing views make the specimen rewarding to examine beyond a single display position. Its exceptionally vivid UV fluorescence adds another point of interest. Ordinary lighting favours the raspberry and crimson colour, surface textures and Record Keeper relief. Ultraviolet illumination introduces a striking red glow, providing a distinct optical response alongside the crystal’s morphological features. For collectors of Burmese corundum, fluorescent minerals or crystals with prominent geometric surface markings, this Mogok Valley ruby brings several attractions together. Its individuality rests in their combination, with the strongly expressed Record Keeper providing a particularly memorable focal point. LAPIDARY POTENTIAL: The ruby’s colour and translucency warrant direct examination before any cutting approach is considered. Internal planes, inclusions and differences in light transmission would influence the suitability of the material for a cabochon or another fashioned form. Its pronounced Record Keeper gives considerable importance to preservation. The relief is a defining feature of the specimen, and polishing or cutting the marked face could remove the very surface geometry that gives it such a distinctive character. A bespoke setting designed around the existing crystal offers a way to explore its jewellery potential while retaining this feature. Leaving the marked face exposed would allow its triangular outline and relief to remain visible, while an open design could admit light through the body. As a preserved specimen, the ruby retains the full relationship between its hexagonal form, richly coloured interior and sculptural surface. Together with its vivid UV response, these qualities give it a strong identity that can be appreciated without altering the crystal. ——————— Shipping and Handling: All orders are shipped by Portuguese National Post. • Dispatch time: within 1 to 3 business days after payment confirmation to Catawiki • Transit time with CTT service: between 5 to 7 business days within europe and worldwide, depending on destination national post. • A tracking number is always provided Photography and transparency: All photographs are taken under controlled lighting conditions using a macro lens, carefully selected to present each specimen as accurately as possible. No filters, colour enhancement, or artificial saturation are applied. The lighting setup uses a calibrated 5500K light source, replicating neutral daylight to reveal natural tones, surface features, and internal characteristics. Under warmer or weaker indoor lighting, colours may appear slightly different, which is normal. The purpose of this photographic process is documentation and representation, not visual enhancement. Images are intended to reflect the specimen faithfully as it appears under balanced natural light conditions. Identification and ethics: All specimens offered are natural and described to the best of our knowledge, based on direct sourcing, professional experience, and information provided by trusted suppliers working at the origin. Every effort is made to ensure transparency and accuracy regarding identification, locality, and general characteristics, avoiding misleading statements about treatment, provenance, or nature. Customs and import taxes: Any customs duties, import fees, or local taxes applied by the destination country are entirely the responsibility of the winning bidder. These charges are not included in the auction price or shipping cost and are determined by the buyer’s local authorities. Guarantee and resolution: Customer satisfaction is important. 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