ノーリザーブ - ALGT認定 - 大型かつ極めて希少な天然オパールのペンダント - 地質学的な正確さと忍耐の結晶- 2.32 g





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Natural opal pendant, pear cabochon shape, from Australia, weighing 2.32 g with measurements 22.25 × 14.67 × 6.30 mm, mounted on an 18k gold-plated silver clasp with an 18k gold-plated chain, accompanied by ALGT certificate 820635201.
Description from the seller
carefully crafted, we present this large, highly exclusive pear-shaped opal pendant. Opal is admired worldwide for its vibrant play of colors that shifts with every movement. This extremely distinctive piece stands out instantly thanks to its large dimensions. On this 18k gold-plated silver clasp, our logo has been applied with utmost precision by our silversmith - a subtle reference to authentic craftsmanship. The pendant comes with an 18k gold-plated chain, ready to wear immediately.
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: 820635201
Species: Natural Opal
Shape: Pear, Cabochon
Measurements: 22.25 x 14.67 x 6.30 mm
Weight: 2.32 in grams (excluding chain)
Color: White + 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 + play of colors) - Pear, Cabochon (~8,60 ct *80/ct = €688)
• Handcrafted silver clasp, silver chain and ALGT certification (€85)
Estimated total retail value: €773
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.
If you purchase multiple lots within the same auction, shipping costs are usually combined automatically. For purchases across different auctions or categories, Catawiki may initially charge shipping costs multiple times. In that case, please feel free to contact us so we can help resolve this and refund any excess shipping costs whenever applicable.
Our shipping costs include a range of premium services:
• High-Quality Packaging: Your item will be carefully packed with protective materials to ensure maximum safety during transit.
• One-Year Warranty: For your peace of mind, we offer a one-year warranty covering manufacturing defects with a replacement of equal value, in addition to Catawiki's terms and conditions. This does not cover loss, damage caused by yourself, or unauthorized repairs.
• Coverage for Loss or Damage: In the unlikely event that your item is lost or damaged during transit, we will fully reimburse the costs.
• Return Shipping Costs: Returns are not a problem for us. According to Catawiki's terms and conditions, the buyer is responsible for return shipping costs. However, we will reimburse the return shipping costs up to the amount of the original shipping costs you paid, with a maximum of 25 EUR.
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
carefully crafted, we present this large, highly exclusive pear-shaped opal pendant. Opal is admired worldwide for its vibrant play of colors that shifts with every movement. This extremely distinctive piece stands out instantly thanks to its large dimensions. On this 18k gold-plated silver clasp, our logo has been applied with utmost precision by our silversmith - a subtle reference to authentic craftsmanship. The pendant comes with an 18k gold-plated chain, ready to wear immediately.
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: 820635201
Species: Natural Opal
Shape: Pear, Cabochon
Measurements: 22.25 x 14.67 x 6.30 mm
Weight: 2.32 in grams (excluding chain)
Color: White + 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 + play of colors) - Pear, Cabochon (~8,60 ct *80/ct = €688)
• Handcrafted silver clasp, silver chain and ALGT certification (€85)
Estimated total retail value: €773
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.
If you purchase multiple lots within the same auction, shipping costs are usually combined automatically. For purchases across different auctions or categories, Catawiki may initially charge shipping costs multiple times. In that case, please feel free to contact us so we can help resolve this and refund any excess shipping costs whenever applicable.
Our shipping costs include a range of premium services:
• High-Quality Packaging: Your item will be carefully packed with protective materials to ensure maximum safety during transit.
• One-Year Warranty: For your peace of mind, we offer a one-year warranty covering manufacturing defects with a replacement of equal value, in addition to Catawiki's terms and conditions. This does not cover loss, damage caused by yourself, or unauthorized repairs.
• Coverage for Loss or Damage: In the unlikely event that your item is lost or damaged during transit, we will fully reimburse the costs.
• Return Shipping Costs: Returns are not a problem for us. According to Catawiki's terms and conditions, the buyer is responsible for return shipping costs. However, we will reimburse the return shipping costs up to the amount of the original shipping costs you paid, with a maximum of 25 EUR.
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.

