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ID #SA1213391
FOR SALE
£595
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Platinum Black Diamond (0.50ct) Twist Solitaire with Shoulder Diamond Ring
For sale by AgAu Jewellery
for sale €696     $756
£595
AgAu Jewellery

AgAu Jewellery

Sellingantiques Verified Since Apr 2011
Browse dealers 287 items
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Id #SA1213391
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Platinum Black Diamond (0.50ct) Twist Solitaire with Shoulder Diamond Ring

1940 - 1960
For Sale by AgAu Jewellery
Description

A custom made Platinum Black Diamond (0.50ct) Twist Solitaire with Shoulder Diamond Ring. The  ring is a platinum set black diamond solitaire approx (0.50ct) with bezel set diamonds to the shoulders, 12 white diamonds, totalling approx.(0.20ct), creating a half eternity ring with a solitaire diamond. All the stones are set in platinum in a rubbed over bezel setting apart from the black diamond which is set in a 4 claw unique twist setting. The diamonds are fantastic quality, brilliantly colored white diamonds to extenuate the black diamond, this was a custom made piece. The ring is as full UK hallmarks for platinum 950 . The face of the ring measures 1.5cm wide x 0.7cm high and weighs 4.2 grams, the ring size is a small UK size I however could be resized and are offered in excellent condition.

Metal: Platinum 950

Stones: Solitaire Ring black diamond (0.50ct) with 12 white diamond totalling (0.20ct).

Ring Face Measurement Combined: 1.7cm wide x 0.7cm high

Hallmarks: Hallmarked for Platinum 950 

Ring Size: UK Ring size I US size 4.25

Weight: 4.2g

Condition: Excellent Condition

Physical Dimensions
Height
0.7cm (0.28")
Width
1.7cm (0.67")
Depth
2cm (0.79")
Declaration

AgAu Jewellery has dated this Platinum Black Diamond Ring to the 1960s.

Reference Numbers
Sellingantiques Reference
SA1213391
Dealers Internal Reference
147128
Dealers Notes

To locate this item on our website use the 'Internal Ref' below on agaujewellery.com where you can also view and/upgrade your packaging, pay using Credit/Debit card, PayPal, American Express, GooglePay and ApplePay

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All items are shipped using our standard of 5 working days, for express shipping please order on our website. EUROPEAN & WORLDWIDE CUSTOMERS ONLY: Please add £32 at the Stripe shipping option for European and £45 if you live anywhere else in the world.

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We offer a 14 day return on all items as standard, by placing an order with Selling Antiques you accept our terms of sales & return policy agaujewellery.com/terms-and-conditions

Description
A custom made Platinum Black Diamond (0.50ct) Twist Solitaire with Shoulder Diamond Ring. The  ring is a platinum set black diamond solitaire approx (0.50ct) with bezel set diamonds to the shoulders, 12 white diamonds, totalling approx.(0.20ct), creating a half eternity ring with a solitaire diamond.
“
 All the stones are set in platinum in a rubbed over bezel setting apart from the black diamond which is set in a 4 claw unique twist setting.
AgAu Jewellery

The diamonds are fantastic quality, brilliantly colored white diamonds to extenuate the black diamond, this was a custom made piece. The ring is as full UK hallmarks for platinum 950 . The face of the ring measures 1.5cm wide x 0.7cm high and weighs 4.2 grams, the ring size is a small UK size I however could be resized and are offered in excellent condition.

fig 1. A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders.
fig 1. Platinum Black Diamond (0.50ct) Twist Solitaire with Shoulder Diamond Ring

Metal: Platinum 950

Stones: Solitaire Ring black diamond (0.50ct) with 12 white diamond totalling (0.20ct).

Ring Face Measurement Combined: 1.7cm wide x 0.7cm high

Hallmarks: Hallmarked for Platinum 950 

Ring Size: UK Ring size I US size 4.25

Weight: 4.2g

Condition: Excellent Condition

Height
0.7cm (0.28")
Width
1.7cm (0.67")
Depth
2cm (0.79")
Date of Manufacture

AgAu Jewellery has dated this Platinum Black Diamond Ring to the 1960s.

Reference Numbers
Sellingantiques Ref
SA1213391
Dealers Internal Ref
147128
AgAu Jewellery
AgAu Jewellery
Sellingantiques verified Since Apr 2011

If you would prefer to pay via credit/debit card please get in touch via email or phone, thank you

Dealer Profile

You can view the stock and full dealer information on the AgAu Jewellery Profile Page

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A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders.
1 / 12
Archive I A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders.

Platinum Black Diamond (0.50ct) Twist Solitaire with Shoulder Diamond Ring

Archive II A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View II
Archive III A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View III
Archive IV A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View IV
Archive V A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View V
Archive VI A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View VI
Archive VII A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View VII
Archive VIII A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View VIII
Archive IX A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View IX
Archive X A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View X
Archive XI A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View XI
Archive XII A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders. View XII
Enlarged Archival View
AgAu Jewellery

AgAu Jewellery
Telephone 01617 061316
Location
Stockport
Great Manchester
United Kingdom
Dealer Profile Page sellingantiques.co.uk/AgAu
Verified Since Apr 2011
Items For Sale 287
Items Sold 1,893
AgAu Jewellery
AgAu Jewellery
Verified Since Apr 2011
View Dealer Info
Location: Stockport, Great Manchester, United Kingdom
Profile: sellingantiques.co.uk/AgAu
Verified
Apr 2011
For Sale
287
Sold
1,893
A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders.
Platinum Black Diamond (0.50ct) Twist Solitaire with Shoulder Diamond Ring
Ref: SA1213391
A platinum twist solitaire ring featuring a round brilliant black diamond held in a four-claw setting with small white diamonds accenting the shoulders.
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Archival Detail

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Cataloguer’s note

Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectRings
  • Period1940 - 1960
  • StyleModern Contemporary
  • MaterialPlatinum, Diamond, Black Diamond
  • ColourSilver, Black
  • MotifsTwist shank, Four-claw setting, Shoulder diamonds, Round brilliant cut
  • SizeH 0.7 cm (0 in) x W 1.7 cm (1 in) x D 2 cm (1 in)

A platinum twist solitaire ring from the modern contemporary period, combining a silver-coloured metal with a central black diamond and white diamond accents. The design incorporates a round brilliant cut black diamond held in a four-claw setting upon a twist shank, accompanied by twelve smaller white diamonds channel-set along the shoulders. Full UK hallmarks for platinum 950 appear on the piece, indicating the metal standard. The dimensions measure 0.7 cm high, 1.7 cm wide, and 2 cm deep. Designed for personal wear, the ring suits formal occasions or everyday accessorising. The construction integrates polished platinum surfaces with contrasting dark and light stones, forming a half eternity style combined with a central solitaire. The piece functions as a finger ornament, pairing the silver tone of the precious metal with the dark central stone and the brighter side stones, all presented in a custom-made arrangement.

FAQs

Black diamonds, historically known as carbonado, gained popularity in contemporary fine jewellery during the late twentieth century as modern gemstone settings evolved to showcase contrasting monochromatic designs.

These rings are typically constructed from high-purity platinum, featuring a central treated or natural black diamond supported by brilliant-cut white diamond accents along the metal shoulders.

Authentic pieces carry official hallmarking stamps denoting platinum purity, alongside professional gemmological verification to confirm stone authenticity and diamond weight.

Fine rings are often showcased on velvet ring stands or within lined glass jewellery caskets positioned on dressing tables or vanity tops.

Clean gently using warm water, mild liquid soap, and a soft-bristled brush, avoiding harsh ultrasonic cleaners if the black diamond has undergone heat enhancement.
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