Can You Melt Diamonds?
Diamonds are legendary for lasting forever — but have you ever stopped and wondered: Could a diamond actually melt?
It is a fascinating question — and an important one if you want to keep your diamond safe for generations. At Garrick Jewelers, we believe part of the joy of owning beautiful jewelry is understanding what makes it so extraordinary — and how to protect it. So, let us open the vault on what really happens when diamonds meet extreme heat — and what you need to know about melting, burning, and caring for your stone the right way.
Do Diamonds Melt?
In theory, yes — but in everyday life, it is very unlikely.
Diamonds are made of pure carbon, arranged in a unique crystal structure. This structure is what gives them their dazzling sparkle and legendary hardness.
To melt a diamond, you would need temperatures of about 7,280°F (4,027°C) — but only if there is no oxygen present. In normal conditions, a diamond will not melt — it will burn instead. Around 1,500–1,600°F, a diamond exposed to oxygen will begin to oxidize and turn into carbon dioxide gas.
Could Household Heat Damage A Diamond?
Most everyday heat sources — like a hair dryer, kitchen oven, or campfire — are not nearly hot enough to damage a diamond. But high heat can come into play during:
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Jewelry repairs or resizing
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Re-setting stones
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Exposure to open flames (like a house fire)
Can A Diamond Crack From Heat?
While diamonds do not melt easily, they can crack or fracture if heated too quickly or unevenly.
Here is how:
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Sudden temperature changes can cause thermal shock.
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If one part of the diamond heats faster than another, internal stress can develop, leading to tiny fractures or cleavage lines.
This is why skilled jewelers take special precautions whenever they apply heat near a diamond.
Will A Diamond Change Color In Heat?
Sometimes, yes. Most diamonds are stable, but certain fancy colored diamonds or those treated to enhance color can shift or fade if overheated. Similarly, inclusions inside the diamond may react differently, changing the way light moves through the stone.
Diamond vs. Precious Metal Heat Points
How Do Jewelers Protect Diamonds From Heat?
At Garrick Jewelers, your diamond’s safety is always a priority. When we perform repairs, resizing, or custom design work:
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We use heat-resistant pastes or shields to protect the stone.
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We remove diamonds from settings when necessary.
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We control torch temperature precisely and use proper techniques.
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We inspect your diamond before and after to ensure its beauty stays intact.
What Should You Do If Your Diamond Is Exposed To Heat?
Stay calm. In most cases, your diamond will be fine — they are incredibly resilient.
However, if your diamond has:
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Visible cracks or chips after heat exposure,
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A sudden loss of brilliance or odd cloudiness,
then it is worth having it professionally inspected.
Can A Damaged Diamond Be Repaired?
Some damage can be polished or re-cut by a skilled gem cutter. In cases where a diamond cracks deeply, it may be possible to reshape it into a smaller stone.
At Garrick Jewelers, we will guide you through your options with honesty and care. If re-cutting is not worthwhile, we can help you design a new piece that still honors your stone’s story.
How To Keep Your Diamond Safe
Here are a few tips to protect your diamond for years to come:
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Have repairs and resizing done by trusted, experienced jewelers.
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If your ring needs heat work, ask about stone removal and protective measures.
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Store your diamond jewelry away from harsh conditions.
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Schedule routine cleanings and inspections to catch any issues early.
Bring Your Diamond To Garrick Jewelers
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Add sparkle to life’s most meaningful moments.
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Reset, redesign, or restore your cherished stones.
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Book your appointment today — and keep your diamond brilliant forever.
Garrick Jewelers
1117 Eichelberger Street
Hanover, PA 17331
717 637-1177