![]() The synthetic and treated varieties of onyx cost much less. One carat of black spinel costs between $200 and $500, while one carat of black onyx costs between $25 to $100. It’s still more valuable than other colors as it’s extremely rare. Black onyx was once considered a precious gemstone. Also, it’s important to note that faceted spinels of all kinds tend to be more valuable than other precious stones. However, black spinel is becoming more popular with time. However, black spinel gems aren’t very valuable as they’ve been mistaken for other types of gems for a long time, making them less popular among gemstone lovers. This makes it only moderately durable and thus requires proper care and storage to maintain its smooth and unaltered surface. On the other hand, Black onyx ranks 6.5-7 on the Mohs scale of mineral hardness. Also, it’s hard to scratch and chip, making it an excellent pick for daily wear. The black spinel stands at a solid 8 on the Mohs scale of hardness, making it highly durable. However, black onyx beads are not polished within, making them dull inside. On the other hand, black onyx is known for its vitreous luster. One can achieve even higher brilliance with cuts like oval, square, pear, or marquise. Lusterīlack spinel is highly reflective and extremely lustrous. No wonder it’s a popular choice for carved cameos and intaglios owing to its spectacular layers that can be carved to show a color contrast. Its contrasting milky white agate formed by natural rhythmic crystallization on the dark background offers an intriguing, strong character and mystical aura. Should you wish to cancel an order before despatch, please contact us on +44 (0)20 7499 6814 or as soon as possible.Black onyx is quite fascinating as well. If the packaging is damaged we will have to charge the £150 replacement cost for a new box. Please allow up to 10 working days for the funds to be returned to your account. When we receive your item, we will contact you by phone and ask for your card details in order to arrange the refund via the original payment method. Please note that we cannot offer a refund or exchange on special order items or items that have been engraved or sized at your request.įor security reasons, we do not store customer card details at Hirsh. We strongly recommend you use secure recorded delivery for this as we cannot be held responsible for the non-delivery of returned goods. When returning your item, please pack your parcel securely in the original Hirsh box. Please be aware that we cannot refund delivery charges. Items can be returned within 30 days and we will be happy to arrange an exchange or a full refund for you. If you live outside of these countries call us on on +44 (0)20 7499 6814 or and we can quote you an up to date charge. If your diamond is certificated, than the certificate will be shipped with the valuation. Please contact us if you need a hard copy. Valuations for all items are sent by email after the item has been shipped. Hirsh London takes no responsibility for import charges incurred. International clients may be liable for import duties. International delivery times may vary due to customs. Deliveries will need to be signed for and photographic identification is required. Upon placing an order, clients will be contacted within 48 hours with an estimated delivery date which is dependent on courier availability.Īll items are sent via Royal Mail Special Delivery in the UK or by either Fedex or Brinks internationally. We usually aim to ship items within three working days but please allow extra time in view of the current global situation. We offer free hand-delivery within the M25, free delivery in the UK and these International destinations: Australia, Bahrain, Canada, E.U, Hong Kong, Iceland, India, Israel, Japan, Lebanon, New Zealand, Norway, Qatar, Saudi Arabia, Singapore, South Africa,
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