No reserve price - 1 pcs Colourless Topaz - 22.63 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - Natural Colorless Topaz

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Starting bid
€ 1
No reserve price
Ghene Menezes
Expert
Retail Estimate  € 380 - € 450
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Natural colorless topaz, 22.63 ct, one stone, cushion mixed cut, transparent, with ALGT certificate No. 71713890 (June 2026).

AI-assisted summary

Description from the seller

Remarkable and elegant specimen of natural colorless Topaz (commonly known as white topaz) with a substantial weight of 22.63 carats. The gem presents with a bright Cushion, Mixed Cut that highlights its transparency and geometric brilliance.
The stone is accompanied by the prestigious official certificate from ALGT (Antwerp Laboratory for Gemstone Testing), report number 71713890. Authenticity can be verified by scanning the QR code on the certificate or on the back of the packaging.
Technical Specifications:
• Species: Natural Topaz
• Variety: Colorless Topaz
• Weight: 22.63 ct
• Cut: Cushion, Mixed Cut
• Dimensions: 16.48 x 14.56 x 10.92 mm
• Color: Colorless
• Transparency: Transparent
• Certificate: ALGT Report No. 71713890 (June 2026)
An excellent visually investable stone for collectors or for creating a large-scale pendant or ring. Careful, tracked, and insured shipping.

Impressive and elegant Natural Colorless Topaz weighing a substantial 22.63 carats. This gemstone features a bright Cushion, Mixed Cut that beautifully enhances its optical transparency and geometric brilliance.
The gemstone comes with an official report from the highly respected ALGT (Antwerp Laboratory for Gemstone Testing), report number 71713890. Authenticity can be easily verified by scanning the QR code on the certificate.
Technical Specifications:
• Species: Natural Topaz
• Variety: Colorless Topaz
• Weight: 22.63 ct
• Cut: Cushion, Mixed Cut
• Measurements: 16.48 x 14.56 x 10.92 mm
• Color: Colorless
• Transparency: Transparent
• Certificate: ALGT Report No. 71713890 (June 2026)
An excellent substantial gemstone for collectors or for creating a statement high-end piece of jewelry. Fast, tracked, and insured shipping.

Remarkable and elegant specimen of natural colorless Topaz (commonly known as white topaz) with a substantial weight of 22.63 carats. The gem presents with a bright Cushion, Mixed Cut that highlights its transparency and geometric brilliance.
The stone is accompanied by the prestigious official certificate from ALGT (Antwerp Laboratory for Gemstone Testing), report number 71713890. Authenticity can be verified by scanning the QR code on the certificate or on the back of the packaging.
Technical Specifications:
• Species: Natural Topaz
• Variety: Colorless Topaz
• Weight: 22.63 ct
• Cut: Cushion, Mixed Cut
• Dimensions: 16.48 x 14.56 x 10.92 mm
• Color: Colorless
• Transparency: Transparent
• Certificate: ALGT Report No. 71713890 (June 2026)
An excellent visually investable stone for collectors or for creating a large-scale pendant or ring. Careful, tracked, and insured shipping.

Impressive and elegant Natural Colorless Topaz weighing a substantial 22.63 carats. This gemstone features a bright Cushion, Mixed Cut that beautifully enhances its optical transparency and geometric brilliance.
The gemstone comes with an official report from the highly respected ALGT (Antwerp Laboratory for Gemstone Testing), report number 71713890. Authenticity can be easily verified by scanning the QR code on the certificate.
Technical Specifications:
• Species: Natural Topaz
• Variety: Colorless Topaz
• Weight: 22.63 ct
• Cut: Cushion, Mixed Cut
• Measurements: 16.48 x 14.56 x 10.92 mm
• Color: Colorless
• Transparency: Transparent
• Certificate: ALGT Report No. 71713890 (June 2026)
An excellent substantial gemstone for collectors or for creating a statement high-end piece of jewelry. Fast, tracked, and insured shipping.

Details

Number of stones
1
Lab report number
71713890
Gemstone type
Topaz
Total carat weight
22.63
Gemstone colour
Colourless
Transparency
Transparent
Clarity grade
Heavy
Treatment
No evidence of treatment
Origin as given on certificate
No origin given
Laboratory report
Antwerp Laboratory for Gemstone Testing (ALGT)
Sealed by laboratory
No
Title additional information
Natural Colorless Topaz
Shape
Cushion
Cutting style
Mixed cut
ItalyVerified
New
on Catawiki
Private

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