1.13 Ct. Yellowish Orange Sapphire from Ceylon (Sri Lanka)

This is a 1.13 carat, princess shape, yellowish orange sapphire, presented by The Natural Sapphire Company, and it combines bright, lively color with precise cutting proportions. The gem measures 6.03 by 5.99 by 3.36 millimeters, it is transparent, and it shows an intense color intensity that reads as a rich yellow orange in most lighting. The clarity has been graded as very slightly included when examined at eye level, which means that inclusions are minimal and do not detract from the gem s overall appearance to a naked eye observer. The polish is excellent, facets meet crisply and reflect light cleanly, and the princess cut has been executed to preserve both face up color and table brightness. The sapphire is of Ceylon origin, Sri Lanka, a locality known for producing bright, saturated tones in the yellow to orange range, and the stone has been treated using beryllium diffusion, a stable and well documented enhancement that intensifies and homogenizes color deep into the crystal, a fact that we fully disclose to ensure responsible and informed purchasing.

To understand why this sapphire s sparkle is so striking, it helps to consider the underlying crystal physics and the way the cutter has translated those properties into faceting. Natural corundum is a trigonal crystal of aluminum oxide, with a refractive index that typically falls around 1.76 to 1.77, and while its dispersion is modest compared with diamond, corundum s refractive properties coupled with careful faceting yield intense scintillation and vivid internal reflection. The princess cut, in this instance, uses a stepped pavilion and a geometric crown that channel light back through the table and pavilion facets in a concentrated way, creating bright flashes of light on movement. The gem s proportions, with an average diameter just over six millimeters and a depth of 3.36 millimeters, translate to a depth percentage in the mid fifties percent range, a proportion that preserves strong table brightness without sacrificing pavilion return. Surface polish plays an outsized role in perceived brilliance, and the excellent polish here minimizes light scatter at the facet interfaces, so more light is returned as clean, lively sparkle. In addition, many sapphires display pleochroism, which in yellow orange stones produces subtle shifts between yellow and orange tones as the stone moves, and this internal color play enhances the sensation of scintillation because facets will alternately flash different warm tones rather than a single static hue.

Clarity and treatment both influence how light travels through a sapphire, and this specimen s very slightly included clarity grade ensures that internal features are unlikely to interrupt light paths in a way that diminishes sparkle. Under loupe or microscopic inspection, minor needle like or crystal inclusions characteristic of Sri Lankan corundum may be visible, but they are small and well oriented so that the cutter could plan facet junctions around them to preserve both structural integrity and optical performance. We evaluate clarity at eye level to reflect the real world viewing experience, and by that standard this stone reads as clean and transparent, important qualities for an educated buyer who values both durability and aesthetic purity. The beryllium diffusion treatment that brings the intense yellow orange tone is a high temperature process that allows small amounts of beryllium to penetrate the corundum lattice, altering the way the crystal absorbs and transmits light without compromising hardness or stability under normal wear. This treatment is permanent and resistant to routine cleaning and jewelry repair, and because it enhances color uniformly it can also reduce the need for extremely deep cuts that might otherwise be necessary to intensify natural tones, meaning cutters can focus on optimizing facet geometry to maximize brilliance and scintillation.

For the discerning collector or buyer who appreciates provenance, the combination of Ceylon origin, intense color, and a precise princess cut makes this sapphire particularly appealing. Sri Lankan sapphires are historically prized for their lively, clean tones, and a yellowish orange hue, especially one with intense saturation, is less common than the typical pity blue sapphires, which adds a scarcity premium for those who value distinctiveness. At 1.13 carats the stone sits in a useful size range for a variety of jewelry applications, from a refined solitaire ring to a custom pendant or a paired set for stud earrings, and the square princess profile is particularly well suited to contemporary settings where geometric lines and clean symmetry are desired. Because we are upfront about the beryllium diffusion treatment, buyers can make an informed decision, and The Natural Sapphire Company stands behind the stone s disclosure, offering gemological documentation and the option of additional testing or customized mounting. Care recommendations for treated corundum remain straightforward, because the diffusion is stable, avoid harsh chemical exposure when cleaning, avoid extreme thermal shock, and routine professional cleaning will keep the gem performing at its brightest.

In summary, this 1.13 carat, Ceylon origin, yellowish orange, princess shape sapphire represents a combination of strong, intense color, precise cutting, and responsible disclosure. The corundum crystal structure and the cutter s facet design work together to create a sparkle that is both lively and warm, with pleochroic color shifts and concentrated pavilion return producing a scintillation that stands out among colored gemstones. The very slightly included clarity grade preserves transparency and durability, while the excellent polish allows maximum light reflection from each facet junction. For an educated buyer seeking a distinctive hue, stable enhancement disclosure, and a versatile square profile that balances contemporary design with classical gemstone performance, this sapphire from The Natural Sapphire Company is an excellent candidate, and we welcome inquiries about bespoke settings, professional appraisals, and any additional gemological information you require.