Lab-Grown vs Natural Diamonds
A Clear, Honest Guide to Choosing the Right Diamond for You
Choosing a diamond is a meaningful decision. Whether you’re selecting an engagement ring, a gift, or a piece to mark a personal milestone, understanding the difference between lab-grown and natural diamonds helps you choose with confidence, not confusion.
At Astella, we work with both lab-grown and natural diamonds, because true luxury is about choice, transparency, and intention. This guide is here to explain the differences clearly, honestly, and without pressure.
What Is a Natural Diamond?
Natural diamonds are formed deep within the Earth over billions of years, under extreme heat and pressure. They are mined from the earth and have been used in fine jewellery for centuries. Every natural diamond is unique, a product of time, geology, and chance.
Key characteristics of natural diamonds:
- Formed naturally over billions of years
- Mined from the earth
- Identical chemical and physical structure to lab-grown diamonds
- Traditionally associated with rarity and heritage
- Often higher in price due to scarcity and mining costs
Natural diamonds appeal to those who value tradition, rarity, and natural origin.
What Is a Lab-Grown Diamond?
Lab-grown diamonds are real diamonds, created using advanced technology that replicates the natural diamond-growing process in a controlled environment. They are chemically, physically, and optically identical to natural diamonds. The difference lies only in how they are formed.
Key characteristics of lab-grown diamonds:
- Created in a laboratory over weeks rather than billions of years
- Identical brilliance, hardness, and sparkle to natural diamonds
- More accessible in price & often chosen for ethical and environmental considerations
- Allow for larger carat sizes within the same budget
Lab-grown diamonds are ideal for those who value innovation, modern luxury, and flexibility.
Are Lab-Grown “Real” Diamonds?
Yes, unequivocally. Lab-grown diamonds are real diamonds, not simulants. They are not cubic zirconia or moissanite.
Both lab-grown and natural diamonds:
- Are made of pure carbon
- Score 10 on the Mohs hardness scale
- Sparkle and refract light in the same way
- Are graded using the same 4Cs (cut, colour, clarity, carat)
Even trained gemologists require specialised equipment to tell them apart.
Lab grown vs Natural Diamonds
| Feature | Natural Diamonds | Lab-Grown Diamonds |
|---|---|---|
| Origin | Formed naturally in the Earth | Grown in a laboratory |
| Age | Billions of years | Weeks |
| Appearance | Identical | Identical |
| Structure | Carbon crystal | Carbon crystal |
| Certification | GIA / IGI | IGI / GIA |
| Price | Higher | More accessible |
| Availability | Rarer | More flexible |
Which Diamond Holds Value Better?
This is a common question, and one that deserves an honest answer.
Natural diamonds have historically retained value better due to their scarcity. However, most engagement rings are not purchased as financial investments, but as emotional ones.
Lab-grown diamonds offer:
- Greater size or quality for the same budget
- The freedom to prioritise design and craftsmanship
- A modern alternative aligned with contemporary values
At Astella, we encourage choosing a diamond for meaning and wearability, not resale speculation.
Ethical & Environmental Considerations
Many customers choose lab-grown diamonds due to concerns around mining practices. Others prefer natural diamonds sourced responsibly.
At Astella:
- We work only with trusted, transparent suppliers
- All diamonds are certified
- We prioritise ethical sourcing across both options
- For every engagement ring purchased, we plant a tree, regardless of diamond type
Luxury should feel good, ethically as well as emotionally.
Which Diamond Is Right for You?
There is no universal “right” answer, only the right one for you.
You may prefer a natural diamond if:
- You value tradition and rarity
- You love the idea of a stone formed by the Earth
- Heritage matters to you
You may prefer a lab-grown diamond if:
- You want a larger carat within your budget
- You value innovation and modern luxury
- Ethical considerations are a priority
Many of our Astella clients choose lab-grown diamonds for engagement rings and natural diamonds for heirloom pieces, others do the opposite. Both choices are valid.
Why Astella Works With Both
Astella was founded on the belief that luxury should feel personal, not prescriptive.
We don’t believe in steering customers toward one option. We believe in education, craftsmanship, and choice, and in creating jewellery that reflects your story, not someone else’s expectations.
Every Astella piece is:
- Handcrafted in Birmingham’s Jewellery Quarter
- Designed with intention and longevity in mind
- Supported by expert, pressure-free guidance