1 pcs Blue Topaz - 84.18 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - スイスブルー

Expert

Selected by Alberto Fidalgo

ALGT COLORED STONE IDENTIFICATION REPORT IDENTIFICATION Species .......................................................................................................... Natural Topaz Variety .................................................................................................................. Blue Topaz DESCRIPTION Shape & Cutting Style ......................................................................... Oval, Mixed Cut Measurements .................................................................. 30.95 x 21.80 x 15.18 mm Carat Weight ................................................................................................... 84.18 Carat Color ................................................................................................................... Intense Blue Transparency .................................................................................................. Transparent ADDITIONAL GRADING CHARACTERISTICS Trade Color Name ............................................................................................ Swiss Blue COMMENTS Blue topaz is commonly enhanced by irradiation and/or heating to improve its color. There is currently no scientific method available to determine whether this gemstone has been enhanced or not. 12 March, 2026 13030854

No. 104953005

No longer available

1 pcs Blue Topaz - 84.18 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - スイスブルー

Translate to English

Will be translated by Google Translate

ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .......................................................................................................... Natural Topaz
Variety .................................................................................................................. Blue Topaz
DESCRIPTION
Shape & Cutting Style ......................................................................... Oval, Mixed Cut
Measurements .................................................................. 30.95 x 21.80 x 15.18 mm
Carat Weight ................................................................................................... 84.18 Carat
Color ................................................................................................................... Intense Blue
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Trade Color Name ............................................................................................ Swiss Blue
COMMENTS
Blue topaz is commonly enhanced by irradiation and/or heating to improve
its color. There is currently no scientific method available to determine
whether this gemstone has been enhanced or not.
12 March, 2026
13030854

Bidding closed

Expert

Selected by Alberto Fidalgo

Retail Estimate € 1,800 - € 2,200

Similar objects

For you in

宝石

View all

Set a search alert

Set a search alert to get notified when new matches are available.

This object was featured in

How to buy on Catawiki

Learn more about our Buyer Protection

1. Discover something special

Browse through thousands of special objects selected by experts. View the photos, details and estimated value of each special object.

2. Place the top bid

Find something you love and place the top bid. You can follow the auction to the end or let our system do the bidding for you. All you have to do is set a bid for the maximum amount you want to pay.

3. Make a secure payment

Pay for your special object and we’ll keep your payment secure until it arrives safe and sound. We use a trusted payment system to handle all transactions.

Start exploring

Have something similar to sell?

Whether you're new to online auctions or sell professionally, we can help you earn more for your special objects.

Sell your object