Natural Aquamarine 19.59 ct – Emerald Cut, Untreated, Certified

Natural aquamarine, 19.59 carats, emerald cut, eye clean clarity, untreated, very light slightly greenish blue

Natural Aquamarine 19.59 ct – Emerald Cut, Untreated, Certified

Name: Natural Aquamarine 19.59 ct – Emerald Cut, Untreated, Certified
Brand: SOSNA Gems & Jewellery
SKU: ČGL23-00-687
Price: 55228.00 CZK
Availability: InStock

55.228,00 CZK

Gemstone Specification

Carat Weight 19.59

Dimensions 20.35 × 12.35 × 10.45 mm

Color Light Blue

Clarity Eye Clean

Shape Oval

Treatment No Treatment

Certification Czech Gemological Certificate

This 19.59 carat natural aquamarine reveals a delicate very light, slightly greenish-blue hue, cut into a cut-cornered rectangular emerald shape measuring 20.35 × 12.35 × 10.45 mm. With eye clean clarity, the gemstone offers excellent transparency and brilliance, with the emerald cut further highlighting its purity and elegance. Untreated and entirely natural, it preserves its authenticity, making it highly valued among collectors and jewelry connoisseurs. Its impressive size and sophisticated cut make it a perfect centerpiece for bespoke high-end jewelry such as statement rings or pendants, where its beauty can be admired to the fullest.

Natural Aquamarine 19.59 ct – Emerald Cut, Untreated, Certified

55.228,00 CZK

From gemstone to jewelry

This example illustrates one possible way a gemstone may be developed into a bespoke piece. Final design is always defined individually, based on the stone and its natural character.

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Each gemstone is professionally examined and accompanied by clear gemological information regarding its characteristics, treatments, and origin.

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Gemological overview

Technical and gemological information about this gemstone variety.

Gemological profile

Aquamarine is a blue to blue-green variety of beryl, appreciated for its clear, fresh coloration and natural transparency. Within the beryl family, it is valued for its calm visual character and refined appearance, particularly in well-cut stones with even color distribution.
Chemically composed of beryllium aluminum silicate (Be₃Al₂Si₆O₁₈), aquamarine crystallizes in the hexagonal crystal system and belongs to the silicate mineral group. In gem-quality specimens, it typically displays a vitreous luster and high transparency.
The refractive index of aquamarine generally ranges from 1.577 to 1.583, contributing to a subtle, elegant brilliance rather than strong dispersion. Aquamarine is found in several regions worldwide, with typical sources including Brazil, Madagascar, Mozambique, Nigeria, and Pakistan, each known for slightly different tonal qualities.

Durability & suitability

Aquamarine is a blue to blue-green variety of beryl, appreciated for its clear, fresh coloration and natural transparency. Within the beryl family, it is valued for its calm visual character and refined appearance, particularly in well-cut stones with even color distribution.
Chemically composed of beryllium aluminum silicate (Be₃Al₂Si₆O₁₈), aquamarine crystallizes in the hexagonal crystal system and belongs to the silicate mineral group. In gem-quality specimens, it typically displays a vitreous luster and high transparency.
The refractive index of aquamarine generally ranges from 1.577 to 1.583, contributing to a subtle, elegant brilliance rather than strong dispersion. Aquamarine is found in several regions worldwide, with typical sources including Brazil, Madagascar, Mozambique, Nigeria, and Pakistan, each known for slightly different tonal qualities.

Treatments & authenticity

With a hardness of 7.5 to 8 on the Mohs scale, aquamarine offers good durability suitable for everyday jewelry when properly set and worn with standard care. It performs reliably across a wide range of jewelry designs, including rings, pendants, earrings, and bracelets.
While aquamarine is generally resistant to everyday wear, larger stones or more exposed settings benefit from protective designs to reduce the risk of impact. Its combination of durability, clarity, and naturally soothing color makes aquamarine a versatile choice for both everyday jewelry and elegant, understated statement pieces.

Our approach to gemstones

We focus primarily on natural, untreated gemstones, valued for their authenticity and inherent beauty.
Any treatments or enhancements are always clearly disclosed, allowing our clients to make informed decisions based on transparent gemological standards.

Sosna Gems is not a licensed financial advisor. Gemstones are collectibles, not securities. Past performance is not indicative of future results. Legal & risk disclosure .