0.70 Ct. Topaz from Ceylon (Sri Lanka)

This exquisite, transparent blue topaz from The Natural Gemstone Company is offered in a precise emerald cut, weighing 0.70 carat, and measuring 6.04 x 4.07 x 3.05 mm. The stone exhibits an intense color intensity that presents a pure, saturated blue throughout the table and facets, and it has been given an excellent polish that enhances surface lustre and facet crispness. Clarity is described as very slightly included, evaluated at eye level, which means that under normal viewing conditions the inclusions are minimal and do not distract from the gem’s appeal, while the step cut of the emerald shape intentionally showcases clarity and color rather than flashy brilliance. This topaz originates from Ceylon, Sri Lanka, a region with a long history of producing gems with notable crystalline quality, and has been enhanced by irradiation, a stable and widely accepted treatment that intensifies blue hues in topaz. We disclose this treatment openly so that an educated buyer can fully understand the nature and market value of the gem.

For a buyer seeking an engagement gemstone that blends elegance, durability, and distinct personality, this emerald cut blue topaz is an outstanding choice. The emerald cut brings a refined, architectural aesthetic, with broad parallel facets that create a hall of mirrors effect, emphasizing depth of color and clarity, and providing a sophisticated, timeless look that differs from the traditional brilliant cut diamond silhouette. At 0.70 carat and with the given dimensions, the stone carries excellent finger presence for a solitaire or for use as a center in a three stone or halo design, producing a longer visual profile that flatters most hand proportions. From a gemological perspective, topaz rates approximately 8 on the Mohs hardness scale, which means it resists everyday wear better than many other attractive colored gemstones, while its refractive index of roughly 1.61 to 1.64 gives it clean, crisp light return that complements the step cut. The clarity grade described as very slightly included at eye level ensures an eye clean appearance for most viewers, while the excellent polish lets the table face and facets display color and luster with minimal surface defects.

An educated buyer will appreciate that irradiation is the standard method used to produce the most desirable blue tones in topaz, and when properly followed by heat stabilization, the resulting color is stable for normal wearing and exposure. We recommend protective mounting choices that enhance longevity, such as a four prong setting with reinforced corners or a bezel setting to shield edges, especially for those who anticipate frequent daily wear. Pairing this emerald cut center with small brilliant cut diamonds or moissanite side stones will add scintillation, balancing the step cut’s subtle flash with lively sparkle while maintaining the elegant character of an engagement piece. Care is straightforward, using warm soapy water and a soft brush for cleaning, avoiding extreme heat or harsh chemicals, and storing the gem separately to prevent abrasion. At The Natural Gemstone Company we provide transparent provenance details and can assist with independent certification if requested, and we will advise on mounting options and appraisal documentation so you have full confidence in your purchase.

Choosing this 0.70 carat Ceylon blue topaz as an engagement gemstone signals a thoughtful preference for color, clarity, and heritage, offering a distinctive alternative to more customary center stones while maintaining practicality and beauty. The combination of intense color, excellent polish, and a very slightly included clarity at eye level allows the stone to read as vivid and clean to the naked eye, while the emerald cut communicates refined taste and longevity in style. For buyers seeking an engagement ring that is elegant, wearable, and anchored in verifiable gemological qualities, this piece represents exceptional value, and The Natural Gemstone Company stands ready to guide you through customization, certification, and care to ensure the gem suits your personal vision and endures as a cherished symbol of commitment.