What defines Art Deco fine jewellery from the 1930s and 1940s?

Art Deco jewellery of this era is recognised by bold geometric shapes, sharp clean lines, and symmetrical arrangements. Platinum was the preferred metal for mountings, often paired with contrasting gemstone combinations such as deep blue sapphires and clear white diamonds cut into precise geometric shapes like baguettes and square cuts.

What materials were traditionally used in 1940s Deco-style necklaces?

High-end necklaces from this period were primarily constructed from platinum due to its strength and neutral tone. Main gemstones included natural sapphires, diamonds, rubies, and emeralds, arranged in channel or pave settings to emphasize structural patterns and light reflection.

How can you verify the authenticity of a vintage Art Deco sapphire necklace?

Authentic pieces generally display period platinum hallmarks, precise hand-finishing, and period-appropriate gem cuts such as baguette, calibre, or single cuts. Gemological certification confirms whether the sapphires are natural and determines their geographical origin.

How can a vintage sapphire and diamond necklace be styled with contemporary attire?

A statement collar necklace works as a central focal point when paired with minimalist evening wear, such as a strapless or open-neck gown. The cool silver tone of platinum and dark blue sapphires also complements structured tailored suits for high-formal occasions.

How should platinum and sapphire jewellery be cleaned and stored?

Clean the piece gently using warm water, mild soap, and a soft-bristled brush to remove dust from behind the stone settings. Store the necklace flat in a fabric-lined box away from other jewellery items to prevent scratches on the metal and gems.

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Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945

Name: Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945
Brand: Antique
SKU: SA1174154
Price: 39950 GBP
Availability: InStock

1920 - 1940

For Sale by AC Silver

Description

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 magnificent and rare vintage sapphire necklace has been crafted in platinum.

The necklace has a symmetrical, stylised bow design, all in the iconic Art Deco manner.

The centre of the necklace bears a layered lobed design, accented with a horizontal linear array of four stunning channel set calibre cut Basaltic sapphires, encompassed with twelve impressive baguette cut diamonds.

The central design is flanked to either side with three articulating and graduating settings, comprised of a continuation of stunning Basaltic sapphires, in a horizontal formation, each flanked with an arched array of baguette cut diamonds, all in the Art Deco style.

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.

The terminals are further embellished with opposing interlacing curvilinear scroll designs, incorporating twenty-eight channel set diamonds, completing the design.

The necklace setting suspends from a platinum chain ornamented with ten individually collet set diamonds, securing to the reverse with a push fit catch, bearing a miniature representation of the central vertical necklace link, embellished with Basaltic sapphires and diamonds; this ornamented chain and clasp bears a high attention to detail and indicates the high quality of the piece.

This impressive vintage sapphire and diamond necklace has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.

The stunning platinum sapphire necklace is supplied with a sapphire report card and certificate supplied by the Gemmological Certification Services, London*, in addition to a diamond and gemstone grading report card for the supporting diamonds.

This magnificent example of vintage sapphire jewellery is the finest of its type you could hope to acquire.

This luxurious sapphire necklace with diamonds exemplifies exceptional craftsmanship and refined beauty, making it an extraordinary choice for both gifting and personal investment. Adorned with high quality diamonds, it makes an exquisite present for anniversaries, milestone birthdays or romantic celebrations. Its timeless design and prestige make it perfect for commemorating life's most significant achievements and cherished moments.

NOTE: * This documentation accredits the blue sapphire originating in Basaltic deposits and certifies that the gemstones show no indications of heating.

Images do not always reflect the true colour and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual colour and showcases each stone.

Condition

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.

Reflections in photographs may detract from the true representation of this stunning example of luxury jewellery.

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)

Diamond Quality

Colour (average grades) G

Clarity (average grades) VS1

Cut Baguette

Content 11.79 carats

Number of Diamonds

156

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'

Wei

Physical Dimensions

Height

1.1cm (0.43")

Width

1.5cm (0.59")

Depth

40cm (15.75")

Declaration

AC Silver has dated this Art Deco Sapphire Necklace to the 1940s.

Reference Numbers

Sellingantiques Reference

SA1174154

Dealers Internal Reference

C9503

Dealers Notes

PLEASE NOTE: AC Silver takes pride in offering only quality items for sale.

This pride in quality includes the professional, efficient and personal service extended to all AC Silver customers.

All items purchased usually dispatched within 24 hours following cleared payment.

All items are professionally and securely packaged, sent FREE of charge and are FULLY INSURED during transit.

FREE worldwide international deliveries are via FedEx International Priority Service.

AC Silver is pleased to provide a 30-day money back guarantee.

Description

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 magnificent and rare vintage sapphire necklace has been crafted in platinum.

fig 1. An Art Deco platinum collar necklace set with central square-cut blue sapphires bordered by baguette and round diamonds. — fig 1. Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945

The necklace has a symmetrical, stylised bow design, all in the iconic Art Deco manner.

The centre of the necklace bears a layered lobed design, accented with a horizontal linear array of four stunning channel set calibre cut Basaltic sapphires, encompassed with twelve impressive baguette cut diamonds.

fig 2. An Art Deco platinum collar necklace set with central square-cut blue sapphires bordered by baguette and round diamonds. — fig 2. Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945

The central design is flanked to either side with three articulating and graduating settings, comprised of a continuation of stunning Basaltic sapphires, in a horizontal formation, each flanked with an arched array of baguette cut diamonds, all in the Art Deco style.

fig 3. An Art Deco platinum collar necklace set with central square-cut blue sapphires bordered by baguette and round diamonds. — fig 3. Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945

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.

“

The terminals are further embellished with opposing interlacing curvilinear scroll designs, incorporating twenty-eight channel set diamonds, completing the design.

AC Silver

fig 4. An Art Deco platinum collar necklace set with central square-cut blue sapphires bordered by baguette and round diamonds. — fig 4. Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945

The necklace setting suspends from a platinum chain ornamented with ten individually collet set diamonds, securing to the reverse with a push fit catch, bearing a miniature representation of the central vertical necklace link, embellished with Basaltic sapphires and diamonds; this ornamented chain and clasp bears a high attention to detail and indicates the high quality of the piece.

fig 5. An Art Deco platinum collar necklace set with central square-cut blue sapphires bordered by baguette and round diamonds. — fig 5. Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945

This impressive vintage sapphire and diamond necklace has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.

The stunning platinum sapphire necklace is supplied with a sapphire report card and certificate supplied by the Gemmological Certification Services, London*, in addition to a diamond and gemstone grading report card for the supporting diamonds.

fig 6. An Art Deco platinum collar necklace set with central square-cut blue sapphires bordered by baguette and round diamonds. — fig 6. Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945

This magnificent example of vintage sapphire jewellery is the finest of its type you could hope to acquire.

This luxurious sapphire necklace with diamonds exemplifies exceptional craftsmanship and refined beauty, making it an extraordinary choice for both gifting and personal investment. Adorned with high quality diamonds, it makes an exquisite present for anniversaries, milestone birthdays or romantic celebrations. Its timeless design and prestige make it perfect for commemorating life's most significant achievements and cherished moments.

fig 7. An Art Deco platinum collar necklace set with central square-cut blue sapphires bordered by baguette and round diamonds. — fig 7. Vintage Art Deco 8.14ct Basaltic Sapphire and 11.79ct Diamond Platinum Necklace Circa 1945

NOTE: * This documentation accredits the blue sapphire originating in Basaltic deposits and certifies that the gemstones show no indications of heating.

Images do not always reflect the true colour and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual colour and showcases each stone.