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






Holds a gemmology degree from IGE Madrid and an MBA from University of Santiago de Compostela.
€5 | ||
|---|---|---|
€4 | ||
€1 |
Catawiki Buyer Protection
Your payment’s safe with us until you receive your object.View details
Trustpilot 4.4 | 143038 reviews
Rated Excellent on Trustpilot.
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.
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
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.
