0.37 Ct. Alexandrite from Ceylon (Sri Lanka)

This listing describes a single transparent alexandrite, weight 0.37 carat, oval shape, with dimensions 4.57 by 3.61 by 2.70 millimeters. The gem is cut in a mixed brilliant style, a choice that balances strong face up brilliance with controlled color saturation. The clarity is graded as very slightly included, evaluated at eye level, which means that the stone presents with excellent visual purity while retaining some minor natural characteristics that do not distract to the naked eye. The color intensity is described as intense, and the polish is excellent, producing crisp facet junctions and lively light return. There has been no enhancement to this gem, and it is a natural alexandrite originating from Ceylon Sri Lanka. Each of these details is provided to give a knowledgeable buyer the technical information required to assess quality and rarity, and The Natural Gemstone Company stands behind the accuracy of these specifications and the careful selection process used to source this material.

From a gemological perspective, alexandrite is the color change variety of chrysoberyl, and the dramatic shift in hue is caused by trace chromium within the crystal structure interacting with different lighting conditions. In daylight and other high color temperature light sources this stone displays a green to bluish green character, while under incandescent or warmer light it shifts toward a brown to brownish red range, showing a clear and attractive transformation. The reported intense color intensity in this specimen means the chromophore presence is significant enough to deliver a pleasing and noticeable change despite the modest carat weight. Ceylon Sri Lanka is a respected source for fine chrysoberyl and alexandrite, often producing stones with clean crystallography and appealing color phenomena, and the absence of enhancement in this gem further elevates its appeal to collectors and connoisseurs who prioritize natural material.

When considering settings and wearability, the 0.37 carat weight and the compact oval dimensions make this alexandrite ideal for refined solitaire rings, elegant stud earrings, delicate pendants, or as the colored center stone in a halo arrangement to increase apparent size. The mixed brilliant cut will maximize scintillation and allow the color change to flash dynamically as the piece moves, so an open setting with prongs will permit more light interaction, while a low bezel will offer security with slightly reduced fire. The color behavior also influences metal choice and how the stone complements different skin tones. In daylight the bright green will read beautifully against cooler skin tones and looks particularly striking with white metal mountings like platinum or white gold, as the cool metal reinforces the fresh green. Under incandescent light the brown or warm raspberry shift harmonizes exceptionally well with warm skin tones and yellow gold mountings, creating a cohesive warm palette. For neutral or olive complexions the stone’s dual personality allows for versatile styling, and pairing the alexandrite with small accent diamonds or warm colored melee can be used to either emphasize the green or the brown phase depending on the intended visual effect.

For long term enjoyment a buyer should know that chrysoberyl has a hardness around 8.5 on the Mohs scale, making alexandrite durable for daily wear when set with sensible protection. Routine care can be performed with mild detergent, warm water and a soft brush, and professional cleaning and periodic inspection of the mounting will preserve the stone and secure the setting. Avoiding hard knocks and extreme thermal shock will prolong the life of the investment. From an investment and collection standpoint this piece offers several attractive qualities to an educated buyer, including a natural Ceylon origin, no enhancements, intense color change, excellent polish and a clarity grade that presents well to the eye. The Natural Gemstone Company is committed to transparency in grading and origin disclosures, and we welcome close examination and inquiries regarding provenance and certification. If you are seeking a small yet significant alexandrite that demonstrates true color change and strong gemological credentials, this stone represents a refined and rare option that will perform beautifully in custom jewelry or as part of a curated collection.