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Black Onyx and Diamond Ring Art Deco
onyx ring with diamonds outside
antique gold rings
wearing gold onyx ring with diamonds
Black Onyx and Diamond Ring Art Deco
Black Onyx and Diamond Ring Art Deco back
setting of Black Onyx and Diamond Ring Art Deco
Black Onyx and Diamond Ring Art Deco wearing
wearing Black Onyx and Diamond Ring Art Deco
Black Onyx and Diamond Ring Art Deco on finger
Black Onyx and Diamond Ring Art Deco grading card
Black Onyx and Diamond Ring Art Deco certificate

Art Deco Black Onyx and Diamond, 18ct Yellow Gold Ring – Circa 1930

A stunning and impressive antique 0.80 carat black onyx and 0.46 carat diamond, 18 carat yellow gold and platinum set Art Deco dress ring; part of our diverse antique jewellery collections

This stunning, fine and impressive onyx and diamond ring has been crafted 18ct yellow gold with a platinum setting.

The pierced decorated ring setting displays a feature central collet set 0.10ct Old European cut diamond.

The feature diamond bears emanating carved black onyx panels, reflecting an unusual Art Deco style looped ribbon design.

The blank onyx is segmented with fourteen pavé set diamonds, in a combination of Old European and eight-cut.

The scrolling bifurcated ring shoulders are each embellished with three collet set Dutch cut diamonds; the shoulders integrate with the setting and blend seamlessly with the plain ring shank via a cuff design.

This impressive and unusual Art Deco ring has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 18 carat gold and platinum.

This impressive black onyx and diamond ring is supplied with an IDGL diamond and gemstone grading report card.

A ring of this style makes an exceptional statement piece, ideal for evening wear, formal occasions or special celebrations. It is particularly suited to someone who appreciates bold vintage jewellery with distinctive character. Elegant and eye-catching, this piece offers both timeless appeal and individuality, making it a wonderful addition to any antique jewellery collection and a piece to be treasured for years to come.

This impressive 1930’s dress ring is excellent quality, set with a very high colour and clarity graded feature diamond displaying a fine white colour, brilliance and presence.

The supporting diamonds display a fine white colour and brilliance.

This item of onyx and diamond jewellery is an excellent gauge of gold and platinum and is in excellent condition.

Additional information

Onyx Quality

Cut Carved
Content 0.80 carat

Diamond Quality

Feature Diamond
Colour G
Clarity VVS2
Cut Old European
Content 0.10 carat
Dimensions 2.98mm (length) x 2.89mm (width) x 1.72mm (depth)

Supporting Diamonds
Colour (average grades) H
Clarity (average grades) SI1
Cut Old European
Content 0.36 carat

Total Diamond Content
0.46 carat

Number of Diamonds
21

Dimensions

Length of setting 1.78cm/0.7"
Width of setting 1.06cm/0.42"
Height of setting 4.58mm/0.18"

Weight

4.48 grams

Ring Size

UK Size M – USA Size 6

Gemstone

,

Metal

Yellow Gold

Setting Metal

Platinum

Date

Circa 1930

Diamond Clarity:

VVS2

Diamond Colour:

G

Can be Resized:

yes

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 203 reviews
★★★★★ ★★★★★

I have dealt with AC silver on several occasions

I have dealt with AC silver on several occasions and always found Andrew extremely knowledgable and trustworthy. Nothing is too much trouble and I am absolutely delighted with my last purchase of a 5 stone diamond ring. From start to finish the process was extremely easy and everything catered for. It was a pleasure to del with Andrew and his most helpful and charming Assistant.
Kathryn 6 Sep 2026
★★★★★ ★★★★★

excellent communication and fast deliver…

excellent communication and fast delivery
oliver 10 Aug 2026
★★★★★ ★★★★★

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
★★★★★ ★★★★★

Amazing response and flexibility

Andrew was amazing to work with, as I'm purchasing overseas, to help me navigate all the different options. He was patient, super responsive, and knowledgeable. I received the ring now, and it's a beautiful piece! Thank you so much Andrew!
19 Dec 2025
★★★★★ ★★★★★

Excellent Service

Excellent communication from Andrew at AC Silver. This was the third time I purchased from AC Silver. The videos, photographs and descriptions are always detailed and accurately show the items being bought. Delivery is always prompt and the silverware arrives professionally package with top quality storage bags included! Thank you to everyone one at AC Silver.
Jeremy 24 Nov 2025

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