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onyx diamond pendant outside
onyx and diamond pendant
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Onyx Panel Pendant with Diamonds
Onyx Panel Pendant with Diamonds
Onyx Panel Pendant with Diamonds
Onyx Panel Pendant with Diamonds
Onyx Panel Pendant with Diamonds reverse
detail of Onyx Panel Pendant with Diamonds
Onyx Panel Pendant with Diamonds size
Onyx Panel Pendant with Diamonds boxed
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Onyx Panel Pendant with Diamonds wearing
wearing Onyx Panel Pendant with Diamonds

Onyx, Diamond and Pearl Art Deco Pendant in Platinum- Circa 1930

A stunning antique black onyx, seed pearl and 0.13 carat diamond, platinum and 15 carat yellow gold Art Deco pendant – boxed; part of our diverse antique jewellery collections

This stunning antique pendant has been crafted in platinum with an 15ct yellow gold setting.

The rhombus shaped frame is ornamented with an impressive black onyx panel, four claw set to the reverse.

The anterior surface of the onyx panel is embellished with impressive piqué work depicting an Art Deco style potted plant design, including sixteen pavé set Old Dutch cut diamonds.

The pot incorporates an arched design and features two fine and impressive seed pearls replicating the pot’s feet.

The organic design and anterior rim of the pendant are embellished with millegrain decoration.

This Mappin & Webb pendant suspends from a hallmarked platinum 18-inch chain, securing with a conventional spring-loaded bolt ring fastening to the reverse.

The chain is hallmarked with the maker’s mark (ST), the platinum guarantee mark (orb), the platinum fineness mark (950) and the common control mark (scales).

This antique onyx panel pendant with diamonds is fitted to the impressive original leatherette and cream satin and velvet lined presentation case.

The satin interior of the presentation case bears the retailer’s mark ‘By Appointment, Mappin & Webb Ltd, Oxford Street, London, W’.

This antique onyx necklace has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 15ct gold and platinum.

The pendant is supplied with an independent diamond grading report card.

A onyx piece of this nature is an ideal gift for occasions such as anniversaries, notable birthdays or meaningful celebrations. Its refined yet individual design lends itself to both formal settings and elegant everyday wear. Timeless and characterful, it represents a beautiful example of Art Deco craftsmanship and a future heirloom to be cherished.

 

This impressive antique Art Deco gemstone necklace is exceptional quality set with black onyx, seed pearls and very well colour matched diamonds displaying a fine white colour and brilliance.

The pendant and chain are an exceptional gauge of gold and platinum, and are in excellent condition with clear hallmarks to the chain.

Additional information

Diamond Quality

Colour (average grades) I
Clarity (average grades) SI2
Cut Old Dutch
Content 0.13 carat

Dimensions

Length of drop 4.8cm/1.89"
Length of pendant 3.9cm/1.54"
Width of pendant 2.9cm/1.14"
Chain length 45.72cm/18"

Weight

7.97 grams

Gemstone

, ,

Metal

Platinum

Setting Metal

Yellow Gold

Date

Circa 1930

Diamond Clarity:

SI2

Diamond Colour:

I

Can be Resized:

no

FREE INTERNATIONAL SHIPPING
Dispatched via DHL (or equivalent) on the next working day.

Estimated Delivery:

  • UK: 2–3 working days
  • Worldwide: 5–7 working days

Fully Insured in Transit
Free insurance up to £30,000. AC Silver remains responsible until delivery is confirmed.

Returns & Cancellations
You have 14 days to cancel your order.

Returns must be sent to our UK address within 14 days of cancellation.

Customers are responsible for return postage. A refund will be processed after inspection of the returned item.

Altered or Personalised Items

  • Items resized or altered before dispatch: exchange or credit note only
  • Engraved silver: non-refundable

Full returns & cancellation policy

What our customers say

5.0 ★★★★★ ★★★★★ based on 201 reviews
★★★★★ ★★★★★

Lovely selection & excellent service

AC Silver has a stunning selection of antique and vintage items. Both of my brooches arrived right on time as indicated by the tracking. They are even lovelier in person and I look forward to wearing them for decades to come. Andrew and Gemma provided excellent communication and prompt dispatch. I would absolutely recommend working through them.
Christina 15 Jul 2026
★★★★★ ★★★★★

Fabulous service, beautiful product.

Fabulous service, beautiful product.
Imogen 24 Jun 2026
★★★★★ ★★★★★

Beautiful collection and outstanding service

Beautiful collection and outstanding service. I already bought two extraordinary pieces and can only highly recommend.
Christine 23 Jun 2026
★★★★★ ★★★★★

Excellent customer care.

I had to place the order over the phone as my internet was misbehaving. The lady who I spoke to could not have been more helpful and was particularly careful to get all the details correct. I was then informed about the collection and dispatch of the item purchased, by email. The item arrived as expected and it had been most well packed so that no harm could come to it. It was a delight to purchase this item from C6323, AC Silver, and I could not fault any aspect of their customer care. I was highly delighted with my silver mustard pot and it was much better than the pictures on the web site.
Hilary 20 May 2026
★★★★★ ★★★★★

Exceptional personal service

First class personal service and attention to detail along with an exceptional quality of items offered for sale. A very smooth purchasing experience with swift and safe despatch of high value objects via courier. Highly recommended.
Colin 28 Apr 2026
★★★★★ ★★★★★

A lovely experience

AC Silver's website is very detailed and informative - allows customers to make well good comparisons and subsequent choices. The owner and his staff are very helpful and friendly - dealing with them is a pleasure. They go the extra mile to make sure that customers are totally satisfied with their purchases. Would highly recommend this store.
Wendy 27 Feb 2026
★★★★★ ★★★★★

Excellent experience

Excellent experience buying a beautiful item from AC Silver. Enquiries were dealt with quickly and courteously, I felt very confident buying an expensive item online. It arrived quickly and safely, beautifully packaged. I am delighted with it and wouldn't hesitate to recommend AC Silver.
Susan 24 Jan 2026
★★★★★ ★★★★★

This was an all-around great experience. The pre-sale communication was excellent and informative. The team was extremely responsive. When the item arrived, it was exactly as described.

This was an all-around great experience. The pre-sale communication was excellent and informative. The team was extremely responsive. When the item arrived, it was exactly as described. I would recommend these guys to anyone.
26 Dec 2025

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