Showing posts with label Blue and Pink Diamond Ring. Show all posts
Showing posts with label Blue and Pink Diamond Ring. Show all posts

Monday, 23 February 2026

How to Clean a Diamond Ring at Home – Expert Advice from DCLA Diamond laboratory

How to Clean a Diamond Ring at Home

Has your engagement ring lost its brilliance? Don’t worry—your diamond hasn’t lost its sparkle. It simply needs professional guidance and proper care.

According to Michael Cohen, DCLA’s diamond cutting and polishing expert at the Diamond Certification Laboratory of Australia, diamonds can maintain their brilliance for thousands of years. However, everyday wear allows oils, soap residue, dust and environmental grime to accumulate on the surface, temporarily dulling the stone’s fire and scintillation.

“Diamonds are the hardest natural substance on earth, ranking 10 on the Mohs scale,” explains Michael Cohen. “They don’t lose their sparkle permanently. What happens is a build-up of residue that blocks light from entering and reflecting properly through the facets.”

The good news? A careful home clean can safely restore that brilliance.


Why Diamond Rings Lose Their Sparkle

Michael Cohen explains that daily exposure to skin oils, moisturisers, cosmetics, and dust causes a film to form on both the diamond and its setting. Over time, this build-up reduces light performance — the very element that makes a diamond appear lively and brilliant.

Regular maintenance prevents this dulling effect and keeps your diamond performing as it was originally cut to do.


Can You Clean a Diamond Ring at Home?

Yes — and you should.

“Routine at-home cleaning helps maintain optimal light return between professional inspections,” says Michael Cohen. “However, it must be done correctly to avoid damage to the setting.”

While home cleaning maintains appearance, annual professional inspections remain essential to ensure the security of the stones and integrity of the setting.


Safe DIY Cleaning Methods Recommended by Michael Cohen

1. Warm Water and Mild Dish Soap (Safest Method)

This is the preferred and safest home-cleaning method.

Steps:

  • Mix warm (not hot) water with a drop of mild dishwashing liquid.
  • Soak the ring for 15–20 minutes.
  • Gently brush around the diamond and setting using a soft toothbrush.
  • Rinse thoroughly in clean water.
  • Pat dry with a lint-free cloth.

“This method effectively removes oil and debris without compromising the metal or diamond,” says Cohen.


2. Warm Water and Glass Cleaner Solution

A diluted glass-cleaner solution (three parts water to one part ammonia-based glass cleaner) can assist in breaking down heavier residue.

However, Michael Cohen cautions:
“Use sparingly and avoid frequent exposure, particularly with white gold or treated metals.”


3. Warm Water and Isopropyl Alcohol

Mix one part rubbing alcohol with three parts warm water and soak the ring for approximately 10 minutes. This helps dissolve oils efficiently.

Rinse thoroughly and dry completely before wearing.


Jewellery Cleaning Products

There are commercial jewellery cleaners available, but Michael Cohen recommends using simple household solutions unless advised otherwise by a professional jeweller.

“Overly aggressive commercial cleaners can sometimes affect delicate settings, especially pavé work.”


Common Mistakes to Avoid

Using Harsh Chemicals

Avoid bleach, chlorine, and strong household cleaners. These can damage metal alloys and weaken prongs.

Scrubbing Aggressively

Hard brushing can loosen claws and dislodge smaller accent stones.

Cleaning Over an Open Sink

Always clean over a bowl or with the sink plug in place to prevent loss.

Using Ultrasonic Cleaners on Pavé or Delicate Settings

Ultrasonic machines can loosen small stones in pavé or micro-set jewellery.

“Ultrasonic cleaners are effective but should be used under professional supervision, especially with intricate designs,” advises Cohen.


Special Care for Mixed Gemstone Rings

If your ring includes pearls, emeralds, opals, or other delicate gemstones, do not use standard cleaning solutions without professional advice.

“Some gemstones are porous or treated. They require specialised care,” says Michael Cohen.


Silver Bands Require Different Treatment

While gold and platinum respond well to soap-and-water cleaning, silver may require polishing solutions or a silver-specific cleaning cloth to restore its shine.


How Often Should You Clean Your Ring?

Michael Cohen recommends cleaning your engagement ring every two to four weeks, depending on wear.

“If you wear your ring daily, regular light cleaning prevents heavy build-up and maintains maximum brilliance.”


When to See a Professional

Even with proper at-home care, professional inspection is critical.

At least once a year, have your ring professionally cleaned and checked for:

  • Loose stones
  • Worn prongs
  • Metal fatigue
  • Structural integrity

“If you ever hear or feel movement in the stone, seek professional attention immediately,” advises Cohen. “A loose diamond can be lost far more easily than people realise.”


How to Keep Your Diamond Cleaner for Longer

Michael Cohen suggests:

  • Removing rings during cooking, gym sessions, gardening, or beach visits.
  • Avoiding contact with sunscreen and heavy moisturisers.
  • Storing rings safely when not worn.
  • Using small ring trays at home to encourage proper habits.

“Mindful wear dramatically reduces build-up and preserves the craftsmanship of the setting.”


Final Word

“Your diamond was cut to perform with precision and brilliance,” says Michael Cohen of the Diamond Certification Laboratory of Australia. “Proper cleaning allows light to enter and exit the stone as intended, restoring its fire, brilliance and life.”

With correct care and periodic professional inspection, your diamond ring will continue to shine for generations.

Wednesday, 28 January 2026

For the World’s Most Exceptional Diamonds, Price Lists Simply Don’t Apply

 World’s Most Exceptional Diamonds

A new Natural Diamond Council report reveals why record-breaking diamonds operate in a market beyond conventional valuation models

At the very top end of the diamond market, traditional pricing frameworks cease to function. Per-carat benchmarks, standard price lists, and even established scarcity models lose relevance when value is driven not by comparables, but by the willingness of elite buyers to secure assets of extreme rarity.

This rarefied segment is the focus of Record-Breaking Diamonds, a new report by the Natural Diamond Council (NDC), which examines the largest, most valuable natural diamonds ever discovered, cut, and sold. Drawing on mining data, gemmological research, and global auction results, the report offers a detailed analysis of how extraordinary rarity reshapes value within the natural diamond supply chain.

World’s Most Exceptional Diamonds

A Century Without a Challenger

One of the report’s most striking observations is the prolonged absence of truly massive diamonds following the 1905 discovery of the Cullinan in South Africa. Weighing an unprecedented 3,106.75 carats, the Cullinan established a benchmark that would stand unchallenged for more than 110 years. Until 2015, no gem-quality diamond exceeding 1,000 carats was recovered anywhere in the world.

That changed with the discovery of the 1,109-carat Lesedi La Rona at Botswana’s Karowe mine. Its recovery marked a turning point. Since then, at least nine rough diamonds weighing over 1,000 carats have been unearthed, including two exceptional finds exceeding 2,000 carats: the 2,488-carat Motswedi in 2024 and a 2,036-carat near-gem-quality rough diamond recovered in July 2025. Both originated from Karowe, with Motswedi now ranking as the second-largest gem-quality rough diamond ever discovered.

Technology, Not Abundance

The increased frequency of such discoveries does not signal a sudden abundance of large diamonds. Rather, it reflects a fundamental shift in extraction technology. The widespread adoption of X-ray Transmission (XRT) technology has transformed diamond recovery by identifying stones based on density before ore enters the crushing circuit. This significantly reduces the risk of fracturing large diamonds during processing.

Lucara Diamond Corp.’s Karowe mine — which installed XRT technology in 2015 and introduced a Mega Diamond Recovery (MDR) system two years later — accounts for the majority of exceptional stones recovered in the past decade. Other operations employing similar systems, including the Cullinan mine and Lesotho’s Letšeng deposit, have also reported a measurable increase in large, high-value diamonds.

Even so, diamonds weighing more than 1,000 carats remain extreme statistical outliers, even with the most advanced recovery methods.

World’s Most Exceptional Diamonds

The Superdeep Advantage

Size alone does not define value at this level. Many of the diamonds highlighted in the NDC report belong to the rare Type IIa category, meaning they contain no measurable nitrogen impurities. These chemically pure stones represent only a tiny fraction of global diamond production.

Some Type IIa diamonds form at extraordinary depths — between 360 and 750 kilometres beneath the Earth’s surface, according to the Gemological Institute of America (GIA). These “superdeep” diamonds belong to the CLIPPIR population (Cullinan-like, Large, Inclusion-poor, Pure, Prismatic, Irregular, Resorbed). Formed under extreme pressures in nitrogen-poor environments, they grow slowly and uninterrupted, resulting in unusually large, highly transparent crystals with minimal internal defects.

When Per-Carat Logic Breaks Down

In this ultra-exclusive segment, pricing behaves differently. Per-carat values no longer scale predictably with size. A defining example is Lucara’s 2016 sale of the 812.77-carat Constellation diamond, which achieved US$63.1 million — the highest price ever paid for a rough diamond. Its per-carat value far exceeded any precedent for an uncut stone, reflecting buyer confidence in its exceptional quality and cutting potential.

Colour, Rarity, and Market Psychology

In the polished market, the 59.60-carat CTF Pink Star remains the most expensive diamond ever sold at auction, achieving HKD 553 million (US$71.2 million) at Sotheby’s Hong Kong in 2017. While the headline price set the record, later sales demonstrated that per-carat value is often the more telling indicator of demand.

In 2022, the 11.15-carat Williamson Pink Star sold for HKD 453.2 million (US$57.7 million), equating to more than US$5 million per carat — the highest per-carat price ever achieved by a diamond.

A similar phenomenon is evident in the blue-diamond category. Despite selling six years apart, the 14.62-carat Oppenheimer Blue (Christie’s Geneva, 2016) and the 15.10-carat De Beers Blue (Sotheby’s Hong Kong, 2022) each realised US$57.5 million, underscoring how rarity and desirability can outweigh minor differences in size or clarity.

Yellow diamonds, by contrast, trade at a substantial discount to pinks and blues, even in exceptional sizes. While the leading pink and blue diamonds regularly exceed US$1 million per carat, none of the top five yellow diamonds have reached that level. The highest-ranked example, the 100.09-carat Graff Vivid Yellow, sold for US$16.8 million in 2014 — approximately US$168,000 per carat.

Diamonds Beyond the Market

Not all record-breaking diamonds remain commercial assets. Some are removed from circulation entirely and repositioned as cultural or institutional icons. The 45.52-carat Hope Diamond, donated by Harry Winston to the Smithsonian Institution in 1958, has been viewed by more than 100 million visitors, making it one of the most publicly encountered diamonds in history.

Similarly, the 140.64-carat Regent Diamond at the Louvre serves not as a tradable asset, but as a benchmark of scale, rarity, and historical significance. Such exhibition stones continue to influence market perception, anchoring contemporary record prices within a much longer narrative of natural-diamond rarity.

As the NDC report makes clear, when diamonds reach this echelon, value is no longer governed by price lists or formulas. Instead, it is shaped by geology, technology, history, and the enduring human desire to possess the truly irreplaceable.

Source: DCLA

Tuesday, 8 April 2025

See The World’s Rarest Diamonds, Worth a Total of $100 million, in Abu Dhabi

All together, the spectacular diamonds are worth around $100 million

Sotheby’s, in partnership with the Abu Dhabi Investment Office, is exhibiting extremely rare coloured diamonds at Bassam Freiha Art Foundation this week, in the biggest showcase of diamonds outside of the Smithsonian Museum in Washington DC.

All together, the spectacular diamonds are worth around $100 million. The largest flawless diamond in the world, the largest vivid orangey pink diamond ever graded, the second largest red diamond known to exist and several diamonds over 100 carats are included in the collection, which will be available for public view this Wednesday, April 9 and Thursday, April 10.

See The World's Rarest Diamonds Worth a Total of 100 million at Sotheby's Abu Dhabi

“The exhibition is incredibly exciting for the simple reason that to purely just have eight diamonds of this calibre in the same room is something that is worthy of one of the great museums in the world, and I can’t imagine that we will ever see this array together again,” says Paul Redmayne, Sotheby’s senior vice president for luxury private sales. “It is definitely a career highlight for me to see these stunning gemstones side by side, and I look forward to no doubt witnessing many a jaw drop as the public come through the doors.”

The star of the showcase is none other than The Mediterranean Blue. Weighing 10.03 carats, this Fancy Vivid Blue rarity has earned the highest GIA colour grading and a coveted Type IIb classification, an elite status held by less than 0.5 per cent of diamonds. Its cushion cut intensifies its liquid-like saturation, an electrifying depth that feels almost surreal. With an estimated value of $20 million, The Mediterranean Blue will be the highlight of Sotheby’s High Jewellery Sale on May 13 in Geneva.

See The World's Rarest Diamonds Worth a Total of 100 million at Sotheby's Abu Dhabi

“The Mediterranean Blue diamond on its own is an incredibly rare stone, and ticks so many of the boxes that you could look for: it is a connoisseur’s diamond, whilst also being infinitely wearable,” shares Redmayne. “The depth of the blue is unrivalled, and even to someone who knows nothing about diamonds, it’s clear to see what makes it so special.”

The diamond is a timeless symbol of love, power, beauty and status – but a captivating collection of this stature is awe-inspiring at an entirely different level; a once-in-a-lifetime experience in the UAE’s capital city, which Redmayne says marks an incredibly exciting moment in the city’s history. “This project further enriches the dynamic landscape of Abu Dhabi for both collectors and the general public,” he says.

Source: voguearabia

Monday, 17 June 2024

Blue and Pink Diamond Ring Fetches $3.7m

Blue and Pink Diamond Ring

A “Toi et Moi” ring featuring blue and pink diamonds – both over 5.0-cts – sold for $3.7m (£3m) almost double its high estimate, at Bonhams London.

The ring was crafted and signed by Mouawad, the Geneva-based jeweler to royalty and high society, which was founded in 1890. It carried a pre-sale estimate of $1.3m to $1.9m (£1m to £1.5m).

The radiant-cut fancy intense blue diamond, weighing 5.03 carats, is obliquely-set with a radiant-cut fancy purple-pink diamond, weighing 5.13 carats. The gallery and shoulders are pave-set with brilliant-cut diamonds of pink and blue tint.

The 113-lot sale, on 13 June, made a total of £6,590,562, with 78 per cent sold by lot and 99 per cent sold by value.

Source: DCLA

What Is Lab-Grown Gold? (And What It Really Means for Jewelry)

  industrial gold waste from electronic components Lab-grown gold is often used as a marketing term to simply refer to recycled or recovered...