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150 carats MID-20TH CENTURY DIAMOND NECKLACE Rectangular step-cut diamond of 7.09 carats, round brilliant-cut diamond of

$599,000
In stock · one of a kind · ready to ship
Insured worldwide delivery via Brink's Global Services — shipping & delivery
Certification on request before purchase — returns policy
Reserve — $24,500 deposit
3-Day Exclusive Hold · Fully Refundable
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At a glance

Shape

Round Brilliant

Carat

150, 7.09, 3.85ct

Colour

On Request

Metal

18K White Gold Platinum

CertificateCertified · papers on request
Make a Private Offer
Shipping & Returns — ships worldwide, Brink's insured door-to-door, in discreet packaging.
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Period craftsmanship of the mid-twentieth century gives this 150-carat necklace a provenance that newer pieces cannot manufacture. A rectangular step-cut diamond of 7.09 carats leads the composition, supported by round brilliant-cut diamonds of 4.21 and 3.85 carats and a wealth of rectangular, baguette and round diamonds, all set in platinum and 18k white gold; colour and clarity grades are available on request. The hand-work of the era — the precision of the settings, the harmony of the cuts — is exactly the kind of heritage that serious collectors value, and necklaces of this scale and age seldom return to the market, lending it the character of a tangible, enduring store of value. A jewel of genuine occasion, it carries its history forward as a defining family heirloom. Full certification is available on request and handled discreetly. We invite you to arrange a private viewing in the Negotiation Room to examine the necklace and discuss terms in confidence.

Specifications

  • Metal: 18K White Gold Platinum
  • Diamond / Gem weight: 150, 7.09, 3.85ct
  • Cut: Baguette, Brilliant, Round
Carat Weight
150, 7.09, 3.85ct
Shape
Round Brilliant
Color
On Request
Metal
18K White Gold Platinum
Certification
GIA / IGI / HRD on request
Treatment
None · Natural
Reference Number
LD-N-HJ-0132

Brink's Global insured worldwide delivery — every Legacy acquisition ships door-to-door through Brink's secure network, fully insured, in discreet neutral packaging.

White-glove delivery — for qualifying pieces, our concierge arranges in-person delivery to your residence or private office.

3-day exclusive hold — your reservation holds the piece privately for 3 days, fully refundable.

Independently certified — to your choice of GIA, IGI or HRD on request; documents shared privately with verified acquirers.

Authentication guarantee — if any piece does not match its stated specifications, full money-back refund.

Care — a soak in warm water with mild soap restores light return; have the prongs inspected annually.

The Complete Story

In full — nothing hidden

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Period craftsmanship of the mid-twentieth century gives this 150-carat necklace a provenance that newer pieces cannot manufacture. A rectangular step-cut diamond of 7.09 carats leads the composition, supported by round brilliant-cut diamonds of 4.21 and 3.85 carats and a wealth of rectangular, baguette and round diamonds, all set in platinum and 18k white gold; colour and clarity grades are available on request. The hand-work of the era — the precision of the settings, the harmony of the cuts — is exactly the kind of heritage that serious collectors value, and necklaces of this scale and age seldom return to the market, lending it the character of a tangible, enduring store of value. A jewel of genuine occasion, it carries its history forward as a defining family heirloom. Full certification is available on request and handled discreetly. We invite you to arrange a private viewing in the Negotiation Room to examine the necklace and discuss terms in confidence.

Specifications

  • Metal: 18K White Gold Platinum
  • Diamond / Gem weight: 150, 7.09, 3.85ct
  • Cut: Baguette, Brilliant, Round
MEET YOUR PRIVATE CLIENT ADVISOR

Sophia Caldwell

Bridal & Engagement Director
Recognized Legacy Source
GIA / IGI / HRD Verified
Brinks Insured Partner
Based in New York
Always available — by WhatsApp and email
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  2. 2 EXPRESS INTEREST Wishlist · Offer · Chat
  3. 3 PRIVATE GALLERY Your Private Viewing Room
  4. 4 RESERVE 3-day exclusive hold
  5. 5 DELIVERED Brinks · White-glove
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150 carats MID-20TH CENTURY DIAMOND NECKLACE… $24,500
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Still with the 150-carat necklace? Leave a number or email — an advisor will reach you personally, discreetly, within the hour.
In stock · one of a kind · ready to ship
Insured worldwide delivery via Brink's Global Services — shipping & delivery
Certification on request before purchase — returns policy

At a glance

Shape

Round Brilliant

Carat

150, 7.09, 3.85ct

Colour

On Request

Metal

18K White Gold Platinum

CertificateCertified · papers on request

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