4.25 Ct. Ametrine from Ceylon (Sri Lanka)

If you are searching for a singular centerpiece that solves the challenge of finding a ring or a collector piece that is both striking and wearable, this gem answers that need, and The Natural Gemstone Company is proud to present one beautiful transparent 4.25 carat cushion shape bi color ametrine, dimensions 12.33 by 9.57 by 6.15 mm, mixed brilliant cut, clarity graded as very very slightly included at eye level, medium light color intensity, and an excellent polish. This ametrine blends the cool purple of amethyst with the warm golden notes of citrine in an elegant, balanced display, and its cushion silhouette provides classic proportions with contemporary appeal. For an engagement ring seeker who wants something neither conventional nor fragile, and for a collector who values rarity and aesthetic harmony, this ametrine provides the ideal convergence of color, cut, and presence. The generous spread of 4.25 carats is large enough to make a bold statement on its own, and the mixed brilliant cut has been executed to maximize scintillation while maintaining the soft, romantic outline that cushion shapes deliver.

On a closer, gemological level the combination of mixed brilliant facets and exceptional polish means that light is expertly managed to create flashes of color and sparkle across the surface, even though the piece displays a delicate, medium light intensity that reads refined under varied lighting. The clarity grade described as very very slightly included, evaluated at eye level, indicates that inclusions are minimal and unobtrusive to the naked eye, so the stone reads as clean and luminous in everyday wear. Origin Ceylon Sri Lanka imparts provenance that collectors often appreciate, and the heat treated enhancement reported is a common and stable method used to optimize color and clarity in natural quartz varieties, including ametrine. Taken together these attributes make this specimen versatile, suitable for a showpiece cocktail ring, a bespoke engagement setting, or as the keystone of a curated gemstone collection.

Durability is an important consideration for anyone intending daily wear, and ametrine belongs to the quartz family which sits at Mohs hardness seven, and this placement on the Mohs scale means it is substantially more resistant to scratches than many ornamental minerals, though it is not as hard as corundum sapphire which rates nine, or as hard as diamond which rates ten, and it is slightly softer than topaz which rates eight. In practical terms this means that with thoughtful setting design and sensible care the stone can serve beautifully as an engagement ring or a piece worn frequently, and we recommend settings that protect the girdle and corners such as a secure bezel or a low profile four prong mount with reinforced corner protection to reduce the chance of chipping. Avoid abrasive household cleaners and rough impact, and store the gem separately from harder stones to prevent incidental abrasion, and you will find that the inherent toughness of quartz combined with the excellent polish and stable heat treatment will provide enduring beauty and reliable service.

At The Natural Gemstone Company we understand the moment you are trying to capture with your purchase, and we are here to ensure your search ends with confidence in both the aesthetic and the technical qualities of the gem. If you need guidance on choosing the ideal metal to complement the bi color character we recommend warm metals such as yellow gold to highlight the citrine notes, or cool metals such as white gold or platinum to emphasize the amethyst tones and create a modern contrast, and our team can assist with setting recommendations and custom design to safeguard the stone while showcasing its color zoning. We can provide additional high resolution images from multiple angles and advice on certification and provenance to support your collector expectations, and we will gladly consult on ring sizing, mounting options, or secure shipping to your destination. This cushion shape bi color ametrine is a rare and elegant solution for someone seeking a unique statement that combines beauty, practical durability, and thoughtful craftsmanship, and The Natural Gemstone Company stands ready to help you make this exceptional gem the centerpiece of your engagement or collection.