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Lab Grown Diamonds

Lab Grown
Diamonds

Authentic, Trustworthy, and Ethical Stones

Lab-grown diamonds are diamonds artificially created in laboratories using cutting-edge technology. While natural diamonds take hundreds of millions of years to form deep underground, lab-grown diamonds replicate that process and are created in just a few weeks to a few months.

Their chemical, optical, and physical properties are identical to those of natural diamonds, and their appearance and brilliance are indistinguishable. For this reason, lab-grown diamonds have been recognized as "real diamonds" and are attracting attention in the jewellery industry.

*The lab-grown diamonds handled by SFD are produced by EDP, a pioneering company that has successfully developed some of the world's largest, high-quality single-crystal diamonds. They are crafted using consistently high-purity, high-quality rough diamonds.

The Lab Grown Diamonds
Journey

  • EDP (Parent Company) Business Areas
    SFD Business Area
  • STEP 01

    Mosaic Crystal

    Mosaic Crystal

    0.3mm thick mosaic crystal

  • STEP 02

    Seed Crystals

    Seed Crystals

    Cut into 8x8 to
    15x15mm pieces

  • STEP 03

    Rough Diamonds

    Rough Diamonds

    Grow to
    desired thickness

  • STEP 04

    Loose Stones

    Loose Stones (LGD)

    Cut and polish
    into loose stones

Features &
Benefits

Environmentally friendly options

01

Environmentally friendly options

Lab-grown diamonds are an environmentally friendly and ethical option. While mining natural diamonds involves large-scale land development and environmental destruction, lab-grown diamonds do not require mining. This significantly reduces the burden on the environment and avoids the social issues associated with mining labor.

Excellent cost performance

02

Excellent cost performance

While possessing the same quality as natural diamonds, lab-grown diamonds are generally 20-40% cheaper. This is due to the significant reduction in mining and transportation costs. They are an ideal choice for those who want to wear high-quality diamonds at an affordable price.

Rich variety

03

Rich variety

Lab-grown diamonds offer a wide range of color and cut options, and offer uncompromising beauty in terms of brilliance and clarity. We offer diamonds that meet a variety of needs, including not only traditional shapes but also original cuts and colored stones.

Lab or Natural?

ダイヤモンド イラスト

Natural
diamond

イコール イラスト

Same

ダイヤモンド イラスト

Lab-grown
diamonds

ノットイコール イラスト

Different as
a substance

キュービックジルコニアなどの類似石 イラスト

Cubic Zirconia
and
Moissanite

Chemical
formula
Thermal
conductivity
Crystal
structure
Mohs
hardness
Density
[g/cm³]
Refractive
index
Optical
dispersion
Natural diamond C High Cubic 10 3.52 2.42 0.044
Lab-grown diamonds C High Cubic 10 3.52 2.42 0.044
Cubic zirconia ZrO2 Low Cubic 8.25-8.5 5.50-6.00 2.13-2.20 0.058-0.066
Moissanite SiC​ High Hexagonal 9.25〜9.5 3.21〜3.22 2.64〜2.69​ 0.104