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Art Deco Enamel Brooch
2.38ct Diamond Brooch Front
Black Enamel Brooch Detail
Platinum Diamond Brooch Front
Antique Diamond Brooch Worn
Diamond Brooches and Pendants
Geometric Brooch Angled View
Black Hot Enamel Detail
Enamel Diamond Brooch Reverse
Hinged Pin Fastening Detail
Brooch Measurement Size Reference
Brooch Worn On Jacket
IDGL Diamond Report Card
Diamond Grading Card
Brooch Grading Card

Antique Art Deco 2.38ct Diamond, Black Enamel Brooch in Platinum – Circa 1925

A stunning, fine and impressive antique 2.38 carat diamond, black enamel and platinum Art Deco brooch; part of our diverse collection of Art Deco brooches

This stunning, fine and impressive antique diamond brooch has been crafted in platinum.

The geometric, iconic Art Deco brooch is ornamented with a stunning central, collar style design accented with paralleling borders of black hot enamel.

The subtly convex surface is embellished with pierced decorated lozenge motifs accented with thirteen pavé set eight cut diamonds.

The central segmented arrangement is flanked to either side with an impressive feature collet set 0.68ct and 0.63ct Old European cut diamond.

The shaped frame is embellished with forty further pavé set eight cut diamonds, completing the design.

The platinum Art Deco diamond brooch secures to the reverse with a hinged pin and sheath style fastening.

This finely hand-crafted antique brooch has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.

This stunning enamel and diamond brooch is supplied with two IDGL diamond grading certificates for the feature stones, in addition to an IDGL diamond grading report card for the supporting stones.

This black enamel and diamond Art Deco brooch combines geometric design with striking tonal contrast. The deep enamel provides a bold frame for the diamonds, enhancing their brilliance while reinforcing the period’s emphasis on symmetry and clean lines. Particularly suited to milestone birthdays, anniversaries, weddings or significant celebrations, its distinctive design and period craftsmanship also give it strong heirloom and collector appeal.

This stunning Art Deco brooch is excellent quality, set with stunning feature diamonds displaying a fine white colour, brilliance and presence.

The impressive supporting diamonds display a fine white colour and brilliance.

The brooch is an excellent gauge of platinum and is in excellent condition.

Additional information

Diamond Quality

Feature Diamond One
Colour H
Clarity VVS2
Cut Old European
Content 0.68 carat
Dimensions 5.71mm (length) x 5.01mm (width) x 2.97mm (depth)

Feature Diamond Two
Colour I
Clarity SI1
Cut Old European
Content 0.63 carat
Dimensions 5.73mm (length) x 5.57mm (width) x 2.94mm (depth)

Supporting Diamonds
Colour (average grades) H/I
Clarity (average grades) SI1/P1
Cut Eight
Content 1.07 carats

Total Diamond Content
2.38 carats

Number of Diamonds
55

Dimensions

Length of setting 4.2cm/1.65"
Width of setting 1.7cm/0.67"
Across pin 2.7cm/1.06"
Height of setting 4.9mm/0.19"

Weight

9.83 grams

Gemstone

,

Metal

Platinum

Date

Circa 1925

Diamond Clarity:

VVS2

Diamond Colour:

H

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 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
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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

Frequently Asked Questions for this Art Deco Brooch

  • Yes. This antique diamond and black enamel brooch dates to circa 1925, placing it firmly within the Art Deco period. Its geometric form, strong symmetry, contrasting black enamel and platinum construction are characteristic of the bold, sophisticated jewellery designs associated with the era.

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