Question 1

Are lab-grown diamonds real diamonds?

Accepted Answer

Yes. Lab-grown diamonds are chemically and optically identical to natural diamonds. The only difference is their origin: lab-grown diamonds are created in controlled environments rather than mined from the earth. Both are graded by the same gemological laboratories (GIA, IGI) using the same criteria.

Question 2

How much cheaper are lab-grown diamonds?

Accepted Answer

Lab-grown diamonds are currently 82% cheaper than natural diamonds on average. The average natural diamond lists at ￥1,043,001 JPY compared to ￥190,818 JPY for lab-grown.

Question 3

Should I buy lab-grown or natural?

Accepted Answer

It depends on your priorities. Lab-grown diamonds offer significant savings, currently 82% less per carat, while natural diamonds hold their resale value better. If budget is your main concern, lab-grown gives you a larger or higher-quality stone for the same price. If long-term value matters, natural may be the better choice.

Lab-Grown vs Natural

Overall Comparison

Natural

Lab Grown

Price Gap

Price Gap by Shape

By Shape

Asscher

Cushion

Emerald

Heart

Marquise

Oval

Pear

Princess

Radiant

Round