No Reserve - ALGT Certified - Large and Highly Exclusive Natural Opal Pendant - A creation of geological precision and patience- 2.25 g





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Large and Highly Exclusive Natural Opal Pendant from Australia, oval cabochon with ALGT certificate, weight 2.25 g, with a silver clasp and a gold-plated chain.
Description from the seller
This large, highly exclusive oval-shaped opal pendant is made with great craftsmanship. Opal is admired worldwide for its vibrant play of colors that shifts with every movement. The extremely distinctive piece stands out instantly thanks to its large dimensions. Our silversmith has discreetly applied our logo to the 18k yellow gold-plated silver clasp as a tangible mark of craftsmanship. The included gold-plated chain ensures the piece can be worn straight away.
At Heart of Gemstone, we distinguish ourselves by offering only flawless gemstones. This piece has been meticulously inspected to ensure it is completely free of imperfections before being presented in the auctions.
What further sets us apart is the addition of an ALGT certificate, provided by an internationally renowned laboratory headquartered in Antwerp. ALGT is globally recognized for its advanced technology and highly accurate analyses. The included certificate not only enhances the value of the item but also provides you with the assurance that you are receiving an authentic and high-quality piece, independently tested and verified by experienced gemologists.
Product Description:
ALGT Certificate Information:
Report Number: 620635606
Species: Natural Opal
Shape: Oval, Cabochon
Measurements: 20.32 x 13.88 x 7.83 mm
Weight: 2.25 in grams (excluding chain)
Color: White (Yellowish) + Play of Colors
Transparency: Translucent
Comments: No indications of treatment. Examined as mounting permits. Weight and measurements are approximate.
Item Condition: Excellent
Value indication:
• Natural Opal (white (yellowish) + play of colors) - Oval, Cabochon (~8,25 ct *80/ct = €660)
• Handcrafted silver clasp, silver chain and ALGT certification (€85)
Estimated total retail value: €745
About shipping:
You can always rely on careful and reliable shipping. Our packages are handed over twice a week on business days to ensure prompt handling of all orders.
Based on average delivery times, many European orders are typically delivered within approximately 7 to 10 days, although some destinations may require slightly more time depending on the destination, customs procedures or busy periods.
The current average international delivery time is approximately 9 days. Please note that these are average delivery times and not guaranteed delivery estimates.
Combined Shipping:
If you purchase multiple lots, we will combine them into one shipment whenever possible. If Catawiki has charged shipping costs more than once, please send us the relevant order numbers and shipping amounts so we can quickly refund the excess shipping costs.
About our lots:
We prioritize excellent customer service and reliability because your experience and satisfaction are of the utmost importance to us. Feel free to browse through our fantastic feedback from other buyers, which shows that we are highly rated. We strive to take high-quality photos with great care to provide a precise and honest representation of the item, so you can have a good understanding of your purchase.
Seller's Story
This large, highly exclusive oval-shaped opal pendant is made with great craftsmanship. Opal is admired worldwide for its vibrant play of colors that shifts with every movement. The extremely distinctive piece stands out instantly thanks to its large dimensions. Our silversmith has discreetly applied our logo to the 18k yellow gold-plated silver clasp as a tangible mark of craftsmanship. The included gold-plated chain ensures the piece can be worn straight away.
At Heart of Gemstone, we distinguish ourselves by offering only flawless gemstones. This piece has been meticulously inspected to ensure it is completely free of imperfections before being presented in the auctions.
What further sets us apart is the addition of an ALGT certificate, provided by an internationally renowned laboratory headquartered in Antwerp. ALGT is globally recognized for its advanced technology and highly accurate analyses. The included certificate not only enhances the value of the item but also provides you with the assurance that you are receiving an authentic and high-quality piece, independently tested and verified by experienced gemologists.
Product Description:
ALGT Certificate Information:
Report Number: 620635606
Species: Natural Opal
Shape: Oval, Cabochon
Measurements: 20.32 x 13.88 x 7.83 mm
Weight: 2.25 in grams (excluding chain)
Color: White (Yellowish) + Play of Colors
Transparency: Translucent
Comments: No indications of treatment. Examined as mounting permits. Weight and measurements are approximate.
Item Condition: Excellent
Value indication:
• Natural Opal (white (yellowish) + play of colors) - Oval, Cabochon (~8,25 ct *80/ct = €660)
• Handcrafted silver clasp, silver chain and ALGT certification (€85)
Estimated total retail value: €745
About shipping:
You can always rely on careful and reliable shipping. Our packages are handed over twice a week on business days to ensure prompt handling of all orders.
Based on average delivery times, many European orders are typically delivered within approximately 7 to 10 days, although some destinations may require slightly more time depending on the destination, customs procedures or busy periods.
The current average international delivery time is approximately 9 days. Please note that these are average delivery times and not guaranteed delivery estimates.
Combined Shipping:
If you purchase multiple lots, we will combine them into one shipment whenever possible. If Catawiki has charged shipping costs more than once, please send us the relevant order numbers and shipping amounts so we can quickly refund the excess shipping costs.
About our lots:
We prioritize excellent customer service and reliability because your experience and satisfaction are of the utmost importance to us. Feel free to browse through our fantastic feedback from other buyers, which shows that we are highly rated. We strive to take high-quality photos with great care to provide a precise and honest representation of the item, so you can have a good understanding of your purchase.

