Blue Diamond Engagement Rings

A blue diamond engagement ring features a genuine diamond with a natural or enhanced blue body color as the center stone. Blue diamonds are part of the “fancy color” diamond family and get their color from trace elements (often boron) or from treatments that alter the stone’s color.

Yes. Blue diamonds are real diamonds with the same structure and durability as white diamonds. They simply have a blue color—either naturally formed, gently enhanced, or grown in a lab—so you get all the sparkle of a diamond in a more unique hue.

• Natural blue diamonds: Extremely rare stones that formed with their blue color deep within the earth. Their rarity means they command some of the highest prices per carat of any diamonds.

• Treated (irradiated/HPHT) blue diamonds: Natural diamonds whose color has been enhanced through stable treatments such as irradiation and/or high-pressure, high-temperature (HPHT). These treatments permanently alter the color without damaging the diamond.

• Lab-grown blue diamonds: Man-made diamonds with the same physical and chemical properties as mined diamonds, grown in a lab rather than extracted from the earth. Many buyers choose them for their value and perceived sustainability benefits.

We’re happy to walk you through which type is right for your style, values, and budget.

Yes. Color-treated blue diamonds are considered safe for everyday wear. Modern treatments like irradiation and HPHT are stable, so the color is permanent under normal wear and cleaning conditions.

As with any fine jewelry, avoid extreme heat during repairs or resizing—our jewelers know how to work with treated stones safely.

Absolutely. Blue diamonds—natural, treated, or lab-grown—are still diamonds, which are a 10 on the Mohs scale of hardness (the hardest natural gemstone). That makes them an excellent choice for an engagement ring you’ll wear every day.

We do recommend removing your ring for heavy lifting, high-impact workouts, or harsh chemicals to keep the metal and setting looking pristine.

A blue diamond engagement ring is perfect if you want something modern and distinctive while still feeling timeless. Blue diamonds carry symbolism of loyalty, trust, calm, and depth—beautiful sentiments for a lifelong commitment.

They also photograph beautifully: the contrast between a cool blue stone, bright white accents, and polished metal makes the ring really stand out on the hand.

Pricing for blue diamond engagement rings depends on:

• Type of stone (natural, treated, or lab-grown)
  
• Carat weight
  
• Color intensity and evenness
  
• Cut, clarity, and overall design
  

Natural blue diamonds are typically the most expensive, while treated and lab-grown blue diamonds can be more budget-friendly ways to get that striking blue color. If you share your ideal budget with us, we can recommend specific rings and center stones that give you the best value.

Blue diamonds are very versatile and pair beautifully with several metal colors:

• White gold / platinum – Clean, bright, and contemporary; maximizes sparkle.
  
• Rose gold – Romantic contrast; the warm metal makes the blue feel soft and dreamy.
  
• Yellow gold – Bold, slightly vintage vibe; especially gorgeous with teal-leaning blues.
  

If you’re unsure, white gold or platinum is usually the safest choice for a modern, high-contrast look.

Yes. Many of our blue diamond engagement rings can be customized. Popular options include:

Choosing the stone shape and size

• Selecting your metal (white, yellow, or rose gold, or platinum)
  
• Tweaking the setting (solitaire, halo, three-stone, side stones, hidden halo, etc.)
  
• Matching the ring with a coordinating wedding band
  

If you don’t see the exact design you’re imagining, reach out—our team can help you personalize an existing style or discuss a custom design.

We want you to love your ring. If you need a different size or have questions after your purchase, reach out to us and we’ll walk you through your options for resizing, exchanges, or additional support based on our current policies.