111.80 Ct. Salmon (Orange) Coral from Australia

One remarkable specimen on offer from The Natural Gemstone Company is a single opaque coral weighing 111.80 carats, presented in a freeform floral carving that reads as a stylized rose. The overall dimensions measure 41.86 by 34.11 by 27.63 millimeters, and the piece displays an intense salmon to orange hue that is both saturated and evenly distributed across the surface. There is no conventional faceting in this example, the lapidary work favoring sculptural relief rather than geometric facets, however the surface polish is classified as excellent, producing a strong, specular gloss that accentuates the curving planes of the petals. Enhancement status is none, the material is natural and untreated, and the stated origin is Australia, a provenance that informs both the expected material characteristics and the rarity profile for a coral of this size and colour.

From a technical lapidary perspective the piece exemplifies controlled relief carving in an organic gem. Coral is a calcareous biogenic material with a fine microcrystalline matrix and an associated organic component that imbues the material with warm tone and depth. Its Mohs hardness is relatively low, typically in the range of three to four, and specific gravity commonly approximates 2.6, therefore the cutting approach emphasizes low stress removal and progressive abrasion. The carving appears to have been executed with a sequence of diamond abrasives and fine grit wheels to establish the primary form and to undercut the petals, followed by incremental refinement to articulate edges and internal curves. Final smoothing has been accomplished to remove tool chatter and to blend transition zones, and the high gloss finish indicates the use of fine abrasives and polishing compounds applied at slow speeds to avoid thermal or mechanical damage.

Colour evaluation for this coral prioritises hue, tone, and saturation, and this specimen scores strongly across those axes. The dominant hue is a saturated salmon orange, with a tone that is sufficiently medium to deep to yield visual intensity without losing subtle warmth. Saturation is pronounced and remains consistent under variable lighting in the supplied images, confirming a well coloured mass rather than a surface dye or coating. The absence of enhancement is critical to the grade, as many corals are historically stabilized or dyed, and the untreated state here preserves both intrinsic colour and tactile qualities. Because coral is opaque, colour is read at the surface and through near surface scattering, so an excellent polish enhances chroma and gloss, producing a vibrant appearance that is particularly effective on curved petal faces and on rolled edges where specular reflections occur.

For application and care the combination of size, relief carving, and organic composition defines both aesthetic potential and practical limitations. At 111.80 carats and with three dimensional petal carving, the piece is ideally suited for a prominent pendant, an artistic brooch, or as the principal element in a museum style setting, where a protective bezel or custom hand fabricated mount can guard delicate petal tips and undercut areas. When setting coral of this type mechanical protection and limited exposure to solvents and heat are paramount, therefore hand setting with micro bezel walls or a custom seat is recommended over aggressive mechanical drilling. Cleaning should be limited to a soft cloth and mild soapy water, avoiding ultrasonic and steam cleaning, and volatile solvents and acids should be strictly excluded to preserve colour and surface integrity. The untreated provenance from Australia combined with the substantial carat weight and the high quality finish produces a collectible gem that appeals to both connoisseurs of organic gems and to designers seeking a statement element with assured material authenticity. The Natural Gemstone Company is proud to present this example as a collector grade coral, documented as natural and untreated, and prepared by expert lapidary hands to exhibit optimal form and surface sheen.