1.05 CT Unheated Natural Octagonal Blue Sapphire.

1.05 CT Unheated Natural Octagonal Blue Sapphire.

Blue Sapphire

Availability: Available · In stock (informational)

An exceptional 1.05ct natural Ceylon blue sapphire featuring a clean, geometric octagonal mixed cut. 100% earth-mined and completely unheated, this gemstone showcases top eye-clean clarity and crisp architectural brilliance—ideal for an Art Deco engagement ring or contemporary luxury setting.

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Specifications

Gem code: TCGP006
Variety: Blue Sapphire
Weight: 1.05 ct
Dimensions: 6.38 × 4.08 × 4.03 mm
Shape: Other
Cut: Mixed
Colour: Blue
Certification: Yes
Laboratory: ZGL
Report no.: ZGL1787744166

Care instructions

Cleaning: Soak in warm water mixed with mild liquid dish soap for 10-15 minutes, followed by gentle brushing with a soft-bristled toothbrush to clear dust along the straight step facets. Storage: Keep stored in a soft velvet ring box or an individual padded gem jar to avoid scratching softer gems or being scratched by diamonds. Safe Methods: Completely safe for standard ultrasonic cleaning and steam cleaning due to its durable corundum structure.

Geological information

Mineral Species: Natural Corundum (Al_2O_3) Variety: Natural Blue Sapphire Crystal System: Trigonal Hardness (Mohs Scale): 9 (Extremely durable for everyday ring wear) Refractive Index: 1.762 – 1.770 Specific Gravity: 3.99 – 4.00 Treatment: Unheated / Untreated (100% Natural)

Metaphysical properties

Chakra Alignment: Throat Chakra & Third Eye Chakra Symbolism: Structure, truth, mental clarity, order, and spiritual focus. Energy: Octagonal-cut unheated sapphires are believed to carry grounding, structured energies that help organize thoughts, sharpen focus during complex tasks, and foster deep inner stability and wisdom.

Untreated

About this gemstone

Discover the rare geometric elegance of pure Sri Lankan gemmological heritage with this 1.05-Carat Natural Octagonal Blue Sapphire. Displaying an authentic, rich blue saturation, this gem is 100% unheated and untreated, preserving its natural crystal matrix untouched by artificial enhancements. Precision-cut into a sharp Octagonal Mixed Cut measuring 6.38 x 4.08 x 4.03 mm, its clean straight facets and substantial depth produce a captivating "hall-of-mirrors" optical effect with vibrant light return. Graded as Top Eye Clean, the gemstone presents crystal-clear transparency with no eye-visible inclusions. Whether crafted into an Art Deco solitaire ring, a East-West modern bezel setting, or added to a private collection, this unheated Ceylon sapphire represents lasting rarity and sophistication.