Engagement Guide

Lab-Grown Diamond Engagement Rings

An honest choice for a new era

In the United States, about half of all engagement rings now carry lab-grown diamonds. The same brilliance, the same hardness, the same chemistry as natural, at a price that lets you choose the carat you truly longed for. Here is how we craft them at ANNA DIAMOND.

Why Choose Lab-Grown for an Engagement Ring

Three reasons. First, the transparent, dazzling brilliance: we select only TYPE IIa stones of F colour or above, VS clarity or above, Excellent cut. Second, freedom of budget: a 1ct-class ring becomes realistic. Third, the honest choice of a diamond grown without opening the earth.

TYPE IIa clarity TYPE IIaラボグロウンダイヤモンドの婚約指輪稜線ソリテール

The HIKARI Collection

Our bridal collection HIKARI is semi-ordered: choose the design, then the stone. Three designs, each named for a way light touches life, crafted one by one by master artisans in Yamanashi and Tokyo.

[HIKARI] 日々 Hibi Solitaire Ring

¥440,000

[HIKARI] 稜線 Ryōsen Solitaire Ring

¥440,000

[HIKARI] 触覚 Shokkaku Solitaire Ring

¥737,000

With a wedding band

[HIKARI] 日々 Hibi Ring

¥187,000

[HIKARI] 稜線 Ryōsen Ring

¥187,000

[HIKARI] 触覚 Shokkaku Ring

¥209,000

See the full bridal collection here.

Engraved identity リング内側の刻印

Inside every ring, the stone's identity is engraved.

Why ANNA DIAMOND Chose Lab-Grown

The name ANNA comes from the designer's younger sister. When I choose a jewel, I picture her face: will this stone brighten the future she will live in? A diamond grown by human hands and wisdom, without opening the earth, answers that question straight. For my sister, for the future.

From First Visit to Finished Ring

Visit our Daikanyama gallery, no reservation needed. Choose the stone and design; your ring is then crafted in Japan in about a month. For remote consultations, reach us via LINE or the contact form.

Frequently Asked Questions

Both are right. If the story of a stone born of the earth moves you, choose natural. If wearing the same brilliance and quality within a realistic budget moves you, choose lab-grown. We see the beauty of the next era in the latter.

Yes. In the US, about half of engagement rings now carry lab-grown diamonds.

"A diamond identical to natural, grown without opening the earth." A certificate accompanies the stone. Surveys in Japan show that once people learn what it is, a clear majority view it favourably.

Lab-grown is the same substance as natural, and quality is verified by certificate. There is, however, no resale market yet: choose it as a stone to wear, not as an asset.

We use only stones of F colour or above, VS clarity or above, Excellent cut. Grades are stated on each product page.

About a month, as each ring is crafted individually in Japan. If you are in a hurry, reach us via LINE or the contact form.

Yes, the first resizing is free. We also offer lifetime cleaning at our Tokyo gallery.

ANNA DIAMOND

GalleryVisit us in Daikanyama CollectionView HIKARI ConsultationTalk to us on LINE