GIA 1.05ct Diamond Solitaire 18k Yellow Gold and Platinum

GIA 1.05ct Diamond Solitaire

Private Sale Investment Grade Timeless Classic

An exceptional opportunity to acquire a GIA certified 1.05 carat Round Brilliant diamond solitaire, privately offered.

This piece represents enduring value, a classic investment-grade diamond set in solid 18ct yellow gold with a platinum six-claw coronet. Designed to transcend trends, the refined knife-edge band and elevated platinum setting allow maximum light return, delivering remarkable brilliance and fire.

Diamonds of this calibre, exceeding the 1.00ct benchmark, remain among the most globally liquid and sought-after categories in fine jewellery.

Diamond Specifications (GIA Certified)

• Carat Weight: 1.05ct
• Shape: Round Brilliant
• Colour: G (Near Colourless)
• Clarity: SI2
• Cut Grade: Excellent
• Polish: Very Good
• Symmetry: Very Good
• Fluorescence: None
• Measurements: 6.58 – 6.66 x 3.97 mm
• GIA Report: Included

The Excellent cut grading ensures optimal light performance, the most critical factor in a diamond’s visual beauty and long-term desirability.

Ring Details

• Metal: Solid 18ct Yellow Gold
• Setting: Platinum six-claw coronet
• Band Style: Knife-edge taper
• Total Ring Weight: 3.7 grams
• Size 6.5

The platinum setting provides strength and security, while the yellow gold band offers timeless warmth and classic appeal.

Investment Perspective

• Surpasses the 1.00ct milestone category
• GIA certified for global credibility and liquidity
• Classic solitaire design — permanently in demand
• No fluorescence (preferred by many investors)
• Durable mixed-metal construction

Fine natural diamonds of this size and quality continue to hold enduring appeal in the global secondary market, particularly in timeless solitaire mountings.

Included

✔ GIA Diamond Grading Report

✔ Valuation Certificate

✔ Secure, insured shipping

A refined and intelligent acquisition equally suited as a legacy engagement ring or a tangible asset within a fine jewellery portfolio.

AUD $13,800 + Shipping and insurance 

Pick up available Pomona Sunshine Coast

GIA certified and originally independently valued for insurance purposes. Documentation available upon request.

Comparable retail replacement for a 1.05ct G colour Excellent cut diamond solitaire in Australia today commonly exceeds $16,000–$20,000. Offered privately at $13,800, representing a considered acquisition below contemporary retail levels.

Serious enquiries welcome.

We have a set of eternity diamond rings custom-made for this ring listed separately. I have attached photos here as well.