DESCRIPTION: Like a fragment of ancient glacier light preserved within a crystalline structure, this remarkable 1.05 carat natural rough diamond displays an exceptional icy blue appearance, distinguished by its extraordinary clarity, remarkable transparency and luminous internal character. Its visual identity evokes pristine glacial ice illuminated from within, combining a beautifully expressive blue body tone with an impressive crystalline purity that gives the specimen a particularly refined and captivating presence. What makes this diamond especially remarkable is the combination of its weight, exceeding the significant one carat threshold, and its outstanding optical appearance. At 1.05 carats, the specimen offers a substantial crystalline presence while displaying an unusually clear and transparent visual character. Light penetrates the body with remarkable ease, revealing luminous internal regions and creating an exceptional impression of depth, purity and brilliance. The colour appearance is particularly attractive. Rather than presenting a uniform blue tone, the crystal displays delicate variations between icy blue, glacial aqua and brighter crystalline blue, depending on illumination and viewing angle. These subtle transitions enhance its natural visual complexity, allowing the colour to appear suspended within the transparent crystalline body rather than confined to the exterior surface. Its transparency is one of its most distinguishing characteristics. The specimen exhibits exceptional visual clarity, with remarkably open crystalline regions that allow light to travel through the body and reveal its internal architecture. This impressive transparency creates a striking sense of crystalline purity, particularly under controlled illumination, when the icy blue colour becomes more luminous and the internal reflections acquire greater brilliance. The natural morphology adds another dimension to its appeal. Measuring 6 × 5 × 4.5 mm, the diamond presents a distinctive irregular rough form with a balanced three dimensional profile. Its preserved crystalline structure combines angular formations, naturally developed surface features and reflective planes that interact beautifully with the transparent interior. The surface displays an attractive combination of natural crystalline textures and reflective relief. Under illumination, numerous small planes generate lively adamantine reflections, producing brilliant flashes that complement the clarity of the crystal. The interaction between the textured exterior and the transparent internal regions creates a particularly engaging optical contrast. With a weight of 1.05 carats, this specimen possesses a notable physical presence for a natural rough diamond. Its dimensions, combined with its exceptional clarity and transparency, make it particularly attractive for collectors who appreciate diamonds displaying both distinctive colour and an expressive crystalline structure. According to the provenance information transmitted by the previous collector, the diamond originates from Lunda Norte, Angola. It is presented in its natural rough state and has not been accompanied by laboratory documentation. Consequently, its gemological identity, geographic origin and the nature, distribution and stability of its blue colour have not been independently established through laboratory analysis. The resulting specimen is an extraordinary expression of icy blue crystalline beauty. Its combination of substantial carat weight, exceptional visual clarity, remarkable transparency, luminous colour and natural rough morphology creates a particularly elegant and memorable presence, making it a compelling addition to a collection of distinctive coloured diamond specimens. SPECIFICATIONS: • Weight: 0.21 g • Weight in carats: 1.05 ct • Dimensions: 6 × 5 × 4.5 mm • Origin: Lunda Norte, Angola, according to the provenance information transmitted by the previous collector • Gem material: Natural diamond • Crystal form: Natural rough diamond • Morphology: Irregular natural crystal with pronounced three dimensional structure • Colour appearance: Luminous icy blue • Colour distribution: Delicate variations between glacial blue, pale aqua and brighter crystalline blue • Transparency: Exceptionally transparent visual appearance with outstanding clarity • Lustre: Adamantine • Surface features: Natural crystalline textures and reflective rough planes • Optical appearance: Remarkable light transmission, luminous internal regions and brilliant crystalline reflections • Condition: Natural, unpolished • Treatment: Natural, but not laboratory tested • Documentation: This diamond is not accompanied by any type of document NOTABLE POINTS: • Impressive 1.05 Carat Weight Exceeds the significant one carat threshold, offering a substantial and highly attractive crystalline presence. • Exceptional Visual Clarity Displays remarkably clear crystalline regions, creating an outstanding impression of internal purity and transparency. • Extraordinary Transparency Its impressive light transmission allows the internal crystalline structure to become beautifully visible under illumination. • Distinctive Icy Blue Appearance Exhibits an elegant glacial blue colour with delicate aqua reflections and a particularly luminous character. • Remarkable Internal Luminosity Light penetrates the crystalline body and produces brilliant internal reflections that enhance its visual depth. • Beautifully Expressive Colour Distribution Subtle variations between icy blue and pale aqua create a refined and visually engaging colour appearance. • Impressive Crystalline Presence Its 6 × 5 × 4.5 mm dimensions and 1.05 carat weight provide an attractive combination of size and natural structure. • Distinctive Natural Morphology Preserves an irregular rough crystal form with angular formations and expressive three dimensional relief. • Brilliant Adamantine Reflections Natural reflective planes interact with illumination, producing lively flashes across the crystalline surface. • Outstanding Optical Character The combination of clarity, transparency and icy blue colour gives the specimen a particularly captivating appearance. • Authentic Natural Rough Presentation Preserved in its original uncut and unpolished form, displaying its naturally developed crystalline architecture. • Provenance Attributed to Lunda Norte Lunda Norte, Angola, according to the provenance information transmitted by the previous collector. • Exceptional Collector Appeal Combines a weight exceeding one carat with remarkable visual clarity, transparency and an elegant icy blue appearance. • Magnificent Display Potential Particularly attractive under controlled illumination and macro photography, where its crystalline transparency and internal reflections can be fully appreciated. COLLECTOR’S INTEREST: Natural rough diamonds displaying an icy blue appearance hold a distinctive appeal among collectors, particularly when accompanied by impressive visual clarity, transparency and an expressive natural crystalline structure. This 1.05 carat specimen is especially engaging because its optical character extends beyond the surface. Its remarkably clear crystalline regions allow illumination to penetrate the body, creating an extraordinary sense of internal depth and luminosity. The resulting interplay between icy blue colour, transparent crystalline material and brilliant reflections produces a particularly refined visual identity. Its weight exceeding one carat further enhances its collector interest, providing a substantial presence while preserving the individuality of its natural rough morphology. The combination of its 6 × 5 × 4.5 mm dimensions, distinctive glacial colour and outstanding apparent clarity makes the specimen especially appealing for collectors seeking visually expressive coloured diamond material. The diamond is presented without laboratory documentation, and its gemological identity, geographic origin and colour characteristics have not been independently verified. Its provenance is attributed to Lunda Norte, Angola, according to information transmitted by the previous collector. For collectors, the specimen offers a particularly attractive combination of substantial carat weight, exceptional visual transparency, luminous icy blue appearance and preserved natural crystalline architecture. LAPIDARY POTENTIAL: This 1.05 carat natural rough diamond may offer interesting possibilities for jewellery design, polishing, faceting or preservation in its original crystalline form. Its remarkable apparent clarity and transparent crystalline regions make it particularly interesting for professional lapidary assessment. The internal light transmission and distinctive icy blue appearance may provide opportunities for a carefully planned cutting or polishing project, depending on the internal structure and orientation of the crystal. As the material has not been laboratory tested, the nature, distribution and stability of its colour have not been scientifically determined, and colour retention during cutting, polishing or any other lapidary procedure cannot be guaranteed. Any lapidary work should be evaluated and carried out by a qualified professional, taking into consideration the crystalline structure, potential internal features, colour distribution and the preservation of the specimen's distinctive optical character. ———————— Shipping and Handling: All orders are shipped by Portuguese National Post and UPS. • Dispatch time: within 1 to 3 business days after payment confirmation to Catawiki • Transit time service: between 2 to 5 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. In the unlikely event of an issue such as loss, damage, or discrepancy, please contact us promptly through Catawiki’s messaging system. Each case is handled individually and fairly, with appropriate solutions offered when justified. Appreciation and commitment: We sincerely thank you for your trust. Our work focuses on careful selection, accurate representation, and respectful presentation of mineral specimens with character and interest. Each piece is chosen for its individual qualities rather than speculative or financial considerations. We aim to provide a transparent, reliable, and consistent experience for collectors at all levels. With gratitude, GemPulse Minerals