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: 54760.00 CZK
Availability: InStock

54.760,00 CZK

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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 natural Aquamarine weighs an impressive 19.59 carats and is expertly fashioned in a classic emerald cut, measuring 20.35 × 12.35 × 10.45 mm. The gemstone displays a delicate very light, slightly greenish blue color, characteristic of fine natural aquamarine from the beryl family. With excellent transparency and clarity graded as eye clean, the stone presents a clean appearance with no inclusions visible to the naked eye.

Its elegant emerald cut features precisely arranged step facets that emphasize the gemstone's exceptional transparency and create the sophisticated hall-of-mirrors effect highly prized by collectors and jewelry connoisseurs. The substantial dimensions and elongated proportions provide outstanding visual presence, making this aquamarine an impressive centerpiece stone.

Certified by the Czech Gemological Laboratory (ČGL), this gemstone has been independently verified as natural beryl of the aquamarine variety. The combination of large carat weight, eye-clean clarity, elegant emerald cut, and independent laboratory certification makes this gemstone an excellent choice for collectors and bespoke jewelry creations. A remarkable aquamarine ideally suited for statement rings, pendants, and luxury custom jewelry designs.

Natural Aquamarine 19.59 ct – Emerald Cut, Untreated, Certified

54.760,00 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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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 .