Natural Swiss Blue Topaz — 19.96 ct, Brazil, Oval Cut (GL)
Natural Swiss Blue Topaz — 19.96 ct, Brazil, Oval Cut (GL)
Swiss blue topaz from Brazil weighing 19.96 carats. This oval-cut example displays IF clarity and strong, saturated blue color. Irradiated and heat treated in accordance with standard industry practice.
Origin: Brazil
Weight: 19.96 carats!
Size: 22 x 12 x 9.2 mm deep
Clarity: Internally Flawless. A top eye-clean gemstone!
Cut: Well-cut oval facet
Color: Swiss Blue
Treatment: Heat and/or irradiation
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Gemstone Details
About Topaz
Topaz is an aluminum fluorosilicate mineral species commonly enhanced to produce stable blue varieties.
Specifications & Notes
Origin: Brazil
Carat Weight: 19.96 ct
Dimensions: 22 x 12 x 9.2 mm
Clarity: IF
Cut: Oval cut
Color: Swiss blue
Treatment: Irradiated and heat treated (industry standard for Swiss blue color)
Gemologist Notes:
This 19.96 carat Swiss Blue Topaz displays a vivid electric blue color in a well-proportioned oval cut. Internally flawless clarity allows strong brilliance and clean light return across the stone’s broad surface.
Swiss Blue coloration is produced through irradiation followed by heat treatment, a stable and widely accepted enhancement within the trade. Brazil remains one of the primary global sources of fine topaz material.
With substantial size and exceptional clarity, this stone offers strong visual presence suitable for statement jewelry designs.
Each gemstone is individually photographed and described.
You will receive the exact stone shown.
Shipping, Care & Authenticity
• Ships securely packaged and fully insured.
• Natural gemstone – no dyes or coatings unless stated.
• Avoid harsh chemicals and ultrasonic cleaners.
• Colors may vary slightly due to lighting and screen settings.