DESCRIPTION: Like a fragment of deep blue sky condensed into natural crystalline architecture, this sapphire from Kyat Pyin, Mogok, presents a powerful hexagonal form combined with intense Royal Blue colour and remarkable optical transformation under transmitted light. Its broad proportions and clearly recognisable corundum geometry give the specimen an immediate structural presence, while the natural variation between saturated blue and lighter internal zones creates considerable visual depth. The crystal displays a robust hexagonal to barrel shaped habit, with broad natural faces, angular edges and preserved basal surfaces. Subtle growth lines and crystallisation textures remain visible across the exterior, recording successive stages of formation. Rather than presenting a perfectly uniform surface, the crystal preserves the authentic relief and structural complexity expected from an untreated natural sapphire specimen. Its colour ranges from concentrated Royal Blue to softer Lagoon Blue and pale icy blue areas. Under reflected light, the deeper zones appear dense and richly saturated, particularly around the central and lower sections. When illuminated from behind or below, the specimen becomes dramatically more luminous, revealing vivid electric blue regions alongside lighter transparent zones that allow the internal architecture to emerge. This transmitted light response is one of the crystal’s most compelling characteristics. Internal growth planes, natural fractures and colour boundaries become clearly visible, producing intersecting luminous structures throughout the sapphire. As the crystal is rotated, these internal features alternately reflect, transmit and diffuse light, creating a constantly changing relationship between deep cobalt blue, bright electric blue and pale crystalline transparency. Recovered from Kyat Pyin in the historic Mogok gem region of Myanmar, this sapphire belongs to one of the world’s most prestigious corundum localities. Its combination of substantial weight, recognisable hexagonal morphology, saturated natural blue colour and highly expressive behaviour under illumination creates a specimen of strong mineralogical character and immediate collector appeal. SPECIFICATIONS: • Weight: 4.47 g • Weight in carats: 22.35 ct • Dimensions: 14 × 12 × 11 mm • Origin: Kyat Pyin, Mogok, Myanmar • Mineral species: Corundum • Variety: Sapphire • Crystal system: Trigonal • Form: Natural single crystal • Crystal habit: Robust hexagonal to barrel shaped crystal • Colour: Royal Blue to Lagoon Blue • Secondary tones: Pale icy blue under transmitted illumination • Colour distribution: Natural internal zoning • Transparency: Translucent to locally semi transparent • Lustre: Vitreous • Surface features: Natural growth lines and preserved crystallisation textures • Internal features: Natural growth planes, fractures and inclusions • Optical behaviour: Electric blue activation under transmitted light • Treatment: None • Condition: Natural, unpolished and untreated crystal NOTABLE POINTS: • Strong natural hexagonal architecture The crystal preserves the characteristic six sided geometry associated with natural corundum growth. • Saturated Royal Blue colour Deep blue zones provide excellent colour density and a powerful visual identity under reflected illumination. • Electric blue response under transmitted light Backlighting activates vivid cobalt and electric blue regions throughout the crystal body. • Attractive natural colour zoning The specimen transitions between concentrated Royal Blue, Lagoon Blue and lighter icy blue areas. • Robust barrel shaped morphology Its broad proportions create a substantial and architecturally balanced collector presentation. • Highly readable internal structure Growth planes, natural fractures and colour boundaries become especially visible when illuminated from below. • Dynamic multi angle optical behaviour The relationship between colour, transparency and internal reflections changes continuously as the crystal rotates. • Preserved natural crystallisation surfaces Original growth textures and subtle surface relief remain visible across several crystal faces. • Strong vitreous reflections The natural faces produce bright reflective highlights that enhance the blue colour and structural definition. • Substantial 22.35 carat specimen Its weight and compact proportions give the sapphire considerable physical and visual presence. • Prestigious Kyat Pyin, Mogok provenance The specimen originates from one of the most historically important sapphire producing regions in the world. • Completely natural and untreated material Its colour, morphology and internal features remain preserved without polishing or enhancement. COLLECTOR’S INTEREST: Natural sapphire crystals that preserve recognisable hexagonal morphology together with rich blue colour are highly desirable among collectors. This specimen combines substantial weight, a robust barrel shaped habit and an expressive distribution of Royal Blue and lighter internal zones within one coherent crystal. Its behaviour under transmitted light adds considerable interest. The dense blue body becomes internally luminous, revealing electric blue colour, pale crystalline areas and intersecting growth structures that remain less visible under ordinary illumination. This dual appearance allows the specimen to function both as an attractive display crystal and as a clear example of natural corundum growth. The Kyat Pyin, Mogok provenance further strengthens its significance. For collectors of Burmese gemstones, raw corundum crystals and locality driven specimens, this sapphire offers an appealing combination of historic origin, natural architecture and strong chromatic presence. LAPIDARY POTENTIAL: The crystal contains areas of attractive blue saturation and local translucency that could theoretically offer lapidary possibilities. Careful orientation would be essential to work around the natural internal planes and preserve the strongest colour concentration. However, cutting would permanently remove the recognisable hexagonal form, natural surfaces and internal zoning that currently define the specimen. Its greatest significance may therefore remain in its natural state, where its full mineralogical structure and dramatic transmitted light response can be appreciated together. ——————- Shipping and Handling: All orders are shipped by Portuguese National Post. • Shipping 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. 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