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Art Deco 8.14 Carat Sapphire and 11.79 Carat Diamond Necklace in Platinum

A magnificent, impressive and rare vintage Art Deco 8.14 carat Basaltic sapphire and 11.79 carat diamond, platinum necklace; part of our diverse collection of statement luxury jewellery

This exceptional and rare vintage sapphire necklace has been masterfully crafted in platinum, showcasing the elegance and symmetry of the iconic Art Deco era.

The design emphasises a stylised bow motif, which features a layered, lobed structure complemented by a horizontal line of four channel-set calibre-cut Basaltic sapphires, surrounded by twelve beautifully coordinated baguette-cut diamonds.

Flanking the centerpiece are three articulated sections that graduate on each side, extending the sapphire and diamond design,  with each horizontal sapphire segment encased by arched arrangements of baguette-cut diamonds.

Each terminal is accented with a curved collar design, with an emanating single strand of Basaltic sapphires; this sapphire design has been hand-crafted to appear to be intricately threaded through the whole bow design.

Enhancing the design are interlacing scrolls that feature twenty-eight channel-set diamonds, which contribute to the necklace’s balance and brilliance.

The pendant section hangs gracefully from a platinum chain, which is decorated with ten collet-set diamonds, and it fastens at the back with a discreet push-fit clasp. This clasp mirrors the central motif, echoing the sapphire and diamond accents , a true reflection of the meticulous attention to detail and high quality of this piece.

Independently tested using state-of-the-art Niton XL2 Analyzer technology and verified as platinum, this necklace is accompanied by a Gemmological Certification Services (GCS, London) report confirming the sapphires are of Basaltic origin and show no indications of heating, a mark of their natural quality. It is also supplied with an IDGL diamond and gemstone grading report card for the supporting diamonds.

A true masterpiece of design and craftsmanship, this vintage necklace featuring platinum, sapphire, and diamonds epitomises the highest standards of vintage Art Deco jewellery. Its ageless allure and unique rarity make it an outstanding option for significant anniversaries, notable birthdays, romantic celebrations, or as a luxury investment.

This stunning vintage necklace is superior quality set with stunning sapphires displaying a fine colour, brilliance and presence.

The very high colour and clarity graded diamonds display a fine white colour and brilliance.

This statement sapphire necklace is a superior gauge of platinum, and is in exceptional condition.

Additional information

Diamond Quality

Colour (average grades) G
Clarity (average grades) VS1
Cut Baguette
Content 11.79 carats

Number of Diamonds
156

Sapphire Quality

Origin Basaltic Deposit
Colour Blue
Cut Calibre
Content 8.14 carats
Dimensions (smallest) 1.60mm (length) x 1.30mm (width)
Dimensions (largest) 4.10mm (length) x 4.00mm (width)

Dimensions

Length of anterior setting 1.65cm/0.65"
Width of centre 1.52cm/0.6"
Height of setting 1.08cm/0.43"
Wearing length 40.01cm/15.75"

Weight

50.84 grams

Gemstone

,

Date

Circa 1945

Diamond Clarity:

VS1

Diamond Colour:

G

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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