At 285.55 carats, this London Blue Topaz operates on a scale rarely encountered, even within serious gemstone collections. Material of this size is uncommon on its own; combining it with flawless clarity and deep, even color places the stone in an entirely different category.
Measuring 34.18 x 50.85 x 28.37 mm, this Trilliant cut Topaz displays a vivid London Blue color with FL – Flawless clarity. Sourced from Brazil and enhanced through radiation treatment to achieve its rich saturation, the gemstone presents exceptional transparency throughout the entire 285-carat mass. The flawless internal structure allows light to move freely through the stone, while the highly polished finish reinforces its impressive visual presence.
London Blue Topaz of this magnitude is seldom encountered in the market, particularly with flawless clarity and such exceptional color consistency. Material at this level moves beyond ordinary collecting and into the realm of landmark gemstones. The kind of gemstone that makes rarity feel secondary to beauty.
Six-month cooling period is the accepted professional standard in the gem trade and is required by regulatory authorities in most major markets. During this period, the treated material must be stored without being released for sale or handling by the public. Learn more about Topaz .
Discover more natural Topaz gemstones in our collection.
Frequently Asked Questions
Is this topaz natural?
Yes, this topaz is a 100% natural gemstone that has been carefully sourced and verified for authenticity. At Gempiece, we never sell lab-created or man-made substitutes — all our gemstones are earth-mined natural stones.
Do you provide certification?
Yes, many of our gemstones come with certification. For others, certification can be arranged upon request at the buyer’s cost. You can select your preferred laboratory from the product information section. We offer certification from standard labs in Bangkok to premium labs such as GIA, GRS, AIGS, and Lotus, with costs typically ranging from $20 to $400 depending on the lab.
Is this topaz transparent?
Transparency varies depending on the gemstone type and its clarity. This information is clearly mentioned in the product information section.
Does this topaz have inclusions?
Clarity details of this topaz are clearly mentioned in the product information section. As a natural gemstone, it may contain inclusions formed during natural crystal growth. Some gemstones may appear loupe-clean or eye-clean, while others may contain natural inclusions such as feathers, needles, or rutile. These inclusions are part of natural gemstone formation and do not affect the overall beauty of the stone.
Does this topaz have any visible surface marks?
Any visible surface characteristics or inclusions are part of the gemstone’s natural formation. These details can be observed in the images and videos provided for the exact stone.
