No reserve price Violet, Blue Tanzanite - 12.19 ct - Gem Report Antwerp (GRA) - Tanzanian Treasure
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This transparent 12.19 ct Tanzanite has a pear shape, violet and blue colouring, and a Gem Report Antwerp report.
AI-assisted summary
Description from the seller
Royal Antwerp Gem – Natural Tanzanite – 12.19 ct – Certified
DESCRIPTION
An impressive Natural Tanzanite weighing 12.19 ct, displaying an attractive violetish-blue color with transparent clarity.
Tanzanite is a highly distinctive variety of natural Zoisite, appreciated for its characteristic combination of blue and violet tones. This substantial example is fashioned in an elegant Pear Mixed Cut, highlighting its appealing color, impressive size, and natural character.
The gemstone has been professionally examined and certified by Gem Report Antwerp (GRA), one of the oldest independent gemological laboratories in Antwerp, Belgium.
The laboratory report states that Tanzanite is commonly heated at low temperatures to improve its color and that there is currently no testing method available to disclose such treatment.
⸻
SPECIFICATIONS
Gemstone: Natural Zoisite, Tanzanite
Weight: 12.19 ct
Shape: Pear Mixed Cut
Measurements: 18.79 × 13.44 × 7.94 mm
Color: Violetish Blue
Transparency: Transparent
Treatment: Cannot currently be determined
Certificate: Gem Report Antwerp (Belgium)
Report Number: 1830019149 AN
Certificate Date: 24 August 2026
⸻
SHIPPING
• Secure worldwide shipping
• Fully insured shipment
• Tracking number provided
• Professionally packed for maximum protection
• Shipped directly from Antwerp, Belgium
⸻
PACKAGING
The gemstone will be delivered in a protective bag together with the original Gem Report Antwerp certificate.
⸻
Paraiba specializes in carefully selected natural gemstones sourced from around the world. Every gemstone is professionally certified in Belgium and shipped directly from Antwerp — the historic world capital of diamonds and colored gemstones.
We carefully select each gemstone for its beauty, authenticity, and overall quality, providing collectors, jewelers, and gemstone enthusiasts with stones they can purchase with confidence.
⸻
NOTES
Please examine all photographs carefully, as they form an integral part of the description.
The gemstone has been photographed under different lighting conditions to present its appearance as accurately as possible. Slight color variations may occur depending on lighting conditions and monitor or smartphone settings.
Natural gemstones may contain internal characteristics and inclusions formed during their natural growth. These are normal features of natural gemstones and should not necessarily be considered imperfections.
According to the accompanying Gem Report Antwerp certificate, Tanzanite is commonly heated at low temperatures to improve its color. There is currently no testing method available to determine whether such treatment has been applied.
Seller's Story
Paraiba is a Belgium-based gemstone dealer with a passion for exceptional natural gemstones and mineral treasures from around the world.
For many years, we have personally sourced and selected gemstones through trusted networks of miners, cutters, collectors, and dealers across Asia, Africa, South America, and Europe. Every stone is chosen individually based on its beauty, character, rarity, and overall value.
We work exclusively with respected gemological laboratories and independent experts, including renowned institutions in Antwerp, one of the world’s most important centers for the gemstone and diamond trade. Whenever possible, gemstones are accompanied by professional certification to provide buyers with additional confidence and transparency.
Our philosophy is simple: we sell only gemstones that we would proudly add to our own collection. We believe that every gemstone has a story, and we take great care in presenting each piece honestly and accurately.
Today, with more than 500 successful sales and a 100% customer satisfaction score, we continue our search for remarkable gemstones across the globe, bringing unique finds directly to collectors, investors, jewelers, and gemstone enthusiasts.
Thank you for visiting Paraiba and sharing our passion for natural treasures.
Royal Antwerp Gem – Natural Tanzanite – 12.19 ct – Certified
DESCRIPTION
An impressive Natural Tanzanite weighing 12.19 ct, displaying an attractive violetish-blue color with transparent clarity.
Tanzanite is a highly distinctive variety of natural Zoisite, appreciated for its characteristic combination of blue and violet tones. This substantial example is fashioned in an elegant Pear Mixed Cut, highlighting its appealing color, impressive size, and natural character.
The gemstone has been professionally examined and certified by Gem Report Antwerp (GRA), one of the oldest independent gemological laboratories in Antwerp, Belgium.
The laboratory report states that Tanzanite is commonly heated at low temperatures to improve its color and that there is currently no testing method available to disclose such treatment.
⸻
SPECIFICATIONS
Gemstone: Natural Zoisite, Tanzanite
Weight: 12.19 ct
Shape: Pear Mixed Cut
Measurements: 18.79 × 13.44 × 7.94 mm
Color: Violetish Blue
Transparency: Transparent
Treatment: Cannot currently be determined
Certificate: Gem Report Antwerp (Belgium)
Report Number: 1830019149 AN
Certificate Date: 24 August 2026
⸻
SHIPPING
• Secure worldwide shipping
• Fully insured shipment
• Tracking number provided
• Professionally packed for maximum protection
• Shipped directly from Antwerp, Belgium
⸻
PACKAGING
The gemstone will be delivered in a protective bag together with the original Gem Report Antwerp certificate.
⸻
Paraiba specializes in carefully selected natural gemstones sourced from around the world. Every gemstone is professionally certified in Belgium and shipped directly from Antwerp — the historic world capital of diamonds and colored gemstones.
We carefully select each gemstone for its beauty, authenticity, and overall quality, providing collectors, jewelers, and gemstone enthusiasts with stones they can purchase with confidence.
⸻
NOTES
Please examine all photographs carefully, as they form an integral part of the description.
The gemstone has been photographed under different lighting conditions to present its appearance as accurately as possible. Slight color variations may occur depending on lighting conditions and monitor or smartphone settings.
Natural gemstones may contain internal characteristics and inclusions formed during their natural growth. These are normal features of natural gemstones and should not necessarily be considered imperfections.
According to the accompanying Gem Report Antwerp certificate, Tanzanite is commonly heated at low temperatures to improve its color. There is currently no testing method available to determine whether such treatment has been applied.
Seller's Story
Paraiba is a Belgium-based gemstone dealer with a passion for exceptional natural gemstones and mineral treasures from around the world.
For many years, we have personally sourced and selected gemstones through trusted networks of miners, cutters, collectors, and dealers across Asia, Africa, South America, and Europe. Every stone is chosen individually based on its beauty, character, rarity, and overall value.
We work exclusively with respected gemological laboratories and independent experts, including renowned institutions in Antwerp, one of the world’s most important centers for the gemstone and diamond trade. Whenever possible, gemstones are accompanied by professional certification to provide buyers with additional confidence and transparency.
Our philosophy is simple: we sell only gemstones that we would proudly add to our own collection. We believe that every gemstone has a story, and we take great care in presenting each piece honestly and accurately.
Today, with more than 500 successful sales and a 100% customer satisfaction score, we continue our search for remarkable gemstones across the globe, bringing unique finds directly to collectors, investors, jewelers, and gemstone enthusiasts.
Thank you for visiting Paraiba and sharing our passion for natural treasures.
Details
Lab report number
1830019149AN
Gemstone type
Tanzanite
Total carat weight
12.19
Gemstone colour
Blue, Violet
Transparency
Transparent
Clarity grade
Slight
Treatment
Commonly heated with no evidence of treatment
Laboratory report
Gem Report Antwerp (GRA)
Sealed by laboratory
No
Title additional information
Tanzanian Treasure
Shape
Pear
