Deep Cinnamon Orange Zircon - Singida, Tanzania - 5.43ct

• Species: Zircon
• Color: Deep cinnamon orange with cognac, amber, and brownish-golden undertones
• Origin: Singida, Tanzania (recorded)
• Carat Weight: 5.43 ct
• Shape: Oval
• Cut: Oval Brilliant / Step-Cut Hybrid
• Dimensions: 12.10 × 8.10 × 5.70 mm
• Clarity: Estimated VVS–VS / Eye Clean
• Treatment: Represented as unheated and untreated
• Transparency: Transparent

The defining feature of this zircon is its deep cinnamon-orange color, balancing warm amber highlights with darker cognac and brownish-golden tones. Its medium-dark appearance lends the gemstone visual weight, while its high luster and dispersion contribute flashes of light throughout the crown.

Zircon has a high refractive index and appreciable birefringence, producing distinctive brilliance and visible doubling of facet edges under certain viewing angles. These optical characteristics give the stone a depth and complexity that distinguish zircon from many other orange gemstones.

Rotational and macro imagery indicates excellent apparent transparency, with no obvious eye-visible inclusions. Minor internal planar features may be present under magnification. The VVS–VS assessment is provisional and should not be interpreted as a formal laboratory clarity grade.

The oval brilliant and step-cut hybrid arrangement balances a classic outline with broad reflective facets. Its symmetry and proportions create a composed face-up presentation, allowing the gemstone’s warm color and optical effects to remain central to its appearance.

The gemstone is represented as natural in color, unheated, and untreated. No independent laboratory report has been supplied to confirm treatment status; these details should therefore be understood as inventory representations rather than laboratory findings.

Singida, Tanzania, is the recorded locality. The region is associated with orange and brown zircon in the international gemstone trade. The specific origin of this individual stone has not been independently determined.

At 5.43 carats, this zircon combines substantial size with a warm, less conventional color profile. Its appeal rests on the relationship between cinnamon-orange saturation, transparent material, classic oval proportions, and the optical depth characteristic of zircon.

Zircon requires more careful handling than its hardness alone might suggest. Although it measures approximately 6.5–7.5 on the Mohs scale, facet edges and vulnerable areas can chip or abrade. A protective setting is advisable, with particular care around the girdle during prong work. Avoid direct torch heat, abrupt temperature changes, and ultrasonic cleaning unless a qualified jeweler has determined that the stone and setting can tolerate the procedure.

Independent gemological testing can be arranged upon request to assess gemstone identity and treatment status. Laboratory documentation may also provide additional support for the recorded provenance and assist with insurance or future resale records.

Every stone offered by the House is selected for more than nominal rarity. Color, proportion, clarity, cutting, material integrity, and the way a gemstone responds to light are considered together.

At Dante Bianco, a gemstone is not simply a measure of carat weight or a line on an inventory sheet. It is a material with its own optical character, physical structure, and potential within a considered design. Each stone is chosen for the qualities that make it worthy of attention and for the possibilities it presents to the collector who recognizes them.