No reserve price - 1 pcs Blue, Purple Tanzanite - 7.05 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

01
day
07
hours
36
minutes
05
seconds
Current bid
€ 5
No reserve price
Purificacion Aquino Garcia
Expert
Selected by Purificacion Aquino Garcia

Holds a gemmology degree from IGE Madrid and an MBA from University of Santiago de Compostela.

Retail Estimate  € 1,000 - € 1,300
CH
€5
DK
€4
IT
€1

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One natural Tanzanite gem, 7.05 ct, Pear shape, Intense Purplish Blue, transparent with slight clarity, commonly heated with no evidence of treatment, ALGT report No. 81910437 from Tanzania, certificate included.

AI-assisted summary

Description from the seller

​A magnificent collector-grade gem showcasing an exceptional 7.05-carat size and a vivid, saturated "Intense Purplish Blue" color.
​
Tanzanite comes from a single source in the worldTanzania making top-tier stones increasingly scarce and highly prized by collectors worldwide.

Stones over 7 carats with full transparency and intense saturation stand out immediately, making this piece an ideal centerpiece for a custom ring, a luxury pendant, or an investment portfolio.
​
This stone is fully certified by the Antwerp Laboratory for Gemstone Testing (ALGT).
​
Gemstone Details:
​
Species: Natural Zoisite
​
Variety: Tanzanite
​
Weight: 7.05 ct
​
Color: Intense Purplish Blue
​
Shape & Cut: Pear, Mixed Cut
​
Measurements: 13.57 x 11.51 x 6.71 mm
​
Transparency: Transparent
​
Origin: Tanzania
​
Lab Report: ALGT Antwerp Report No. 81910437

​Treatments: Tanzanite is commonly heated at low temperatures to improve color (standard industry practice; ALGT notes no scientific test currently exists to prove enhancement).

​Shipping & Handling:
​Safely secured and shipped in a protective gem box.
​
Sent via registered, fully insured express shipping with tracking.
​The original ALGT certificate is included in the package.

Seller's Story

Welcome to A.J.N.L. Atelier, a specialized curator of top tier natural gemstones and high-quality diamonds. Built on a foundation of pure tradition and high quality, we operate with the rigorous standards of a luxury maison. We bypass standard commercial stones to focus exclusively on premium, investment grade selections. Our portfolio is curated for collectors, investors, and bespoke jewellers who demand uncompromised aesthetics and genuine scarcity. From exceptionally rare, unheated sapphires rubies and emeralds to strictly graded diamonds, every stone we offer is vetted for superior transparency, optimal proportions, and exact light performance. Our Commitments: Elite Curation we only offer 100% natural, high-tier gemstones. We strictly refuse to deal in synthetic, composite, or excessively treated materials. Authoritative Certification: Complete transparency is our baseline every gemstone and diamond is accompanied by an independent laboratory report from the world’s most trusted and elite gemological institutes. Ethical Integrity: We strictly adhere to the Kimberley Process for all diamonds, guaranteeing conflict-free and ethical origins. Accurate Representation: We believe in objective, factual listings we provide exact measurements, precise condition grading, and unedited photography so you can bid with absolute confidence. We invite you to explore our exclusive auction lots and experience a standard of gemological excellence built on expertise, tradition, and trust.

​A magnificent collector-grade gem showcasing an exceptional 7.05-carat size and a vivid, saturated "Intense Purplish Blue" color.
​
Tanzanite comes from a single source in the worldTanzania making top-tier stones increasingly scarce and highly prized by collectors worldwide.

Stones over 7 carats with full transparency and intense saturation stand out immediately, making this piece an ideal centerpiece for a custom ring, a luxury pendant, or an investment portfolio.
​
This stone is fully certified by the Antwerp Laboratory for Gemstone Testing (ALGT).
​
Gemstone Details:
​
Species: Natural Zoisite
​
Variety: Tanzanite
​
Weight: 7.05 ct
​
Color: Intense Purplish Blue
​
Shape & Cut: Pear, Mixed Cut
​
Measurements: 13.57 x 11.51 x 6.71 mm
​
Transparency: Transparent
​
Origin: Tanzania
​
Lab Report: ALGT Antwerp Report No. 81910437

​Treatments: Tanzanite is commonly heated at low temperatures to improve color (standard industry practice; ALGT notes no scientific test currently exists to prove enhancement).

​Shipping & Handling:
​Safely secured and shipped in a protective gem box.
​
Sent via registered, fully insured express shipping with tracking.
​The original ALGT certificate is included in the package.

Seller's Story

Welcome to A.J.N.L. Atelier, a specialized curator of top tier natural gemstones and high-quality diamonds. Built on a foundation of pure tradition and high quality, we operate with the rigorous standards of a luxury maison. We bypass standard commercial stones to focus exclusively on premium, investment grade selections. Our portfolio is curated for collectors, investors, and bespoke jewellers who demand uncompromised aesthetics and genuine scarcity. From exceptionally rare, unheated sapphires rubies and emeralds to strictly graded diamonds, every stone we offer is vetted for superior transparency, optimal proportions, and exact light performance. Our Commitments: Elite Curation we only offer 100% natural, high-tier gemstones. We strictly refuse to deal in synthetic, composite, or excessively treated materials. Authoritative Certification: Complete transparency is our baseline every gemstone and diamond is accompanied by an independent laboratory report from the world’s most trusted and elite gemological institutes. Ethical Integrity: We strictly adhere to the Kimberley Process for all diamonds, guaranteeing conflict-free and ethical origins. Accurate Representation: We believe in objective, factual listings we provide exact measurements, precise condition grading, and unedited photography so you can bid with absolute confidence. We invite you to explore our exclusive auction lots and experience a standard of gemological excellence built on expertise, tradition, and trust.

Details

Number of stones
1
Lab report number
81910437
Gemstone type
Tanzanite
Total carat weight
7.05
Gemstone colour
Blue, Purple
Transparency
Transparent
Clarity grade
Slight
Treatment
Commonly heated with no evidence of treatment
Laboratory report
Antwerp Laboratory for Gemstone Testing (ALGT)
Sealed by laboratory
No
Shape
Pear
The NetherlandsVerified
7
Objects sold
pro

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