Where tradition and innovation meet, jewelry that connects hearts
Tennis Necklaces - Unisex Motif
The Same Brilliance as Natural
Lab-Grown Diamond
- Lab-grown diamonds are real diamonds with the same crystal structure as natural diamonds.
- They are created by reproducing the natural growth environment of diamonds in advanced research facilities.
- They offer the same brilliance, hardness, and light performance as natural diamonds, while allowing more flexibility in size and quality.
- In recent years, they have gained attention worldwide and are used by jewelry brands and research institutions alike.
- At Inome Heart, we focus on the beauty and potential of lab-grown diamonds to pursue sizes and designs that were difficult to achieve with conventional diamond jewelry.
- A new diamond born from new technology. It is a new standard for the future of jewelry.
Only Lab-Grown Offers Brilliance and Scale
- The greatest appeal of lab-grown diamonds is the freedom they offer in both brilliance and size.
- Because they share the same crystal structure as natural diamonds, their sparkle and light return remain unchanged.
- Created in controlled research facilities, lab-grown diamonds are real diamonds with the same physical, chemical, and optical properties as natural stones.
- That means you can enjoy the transparency, brilliance, and hardness that define a true diamond.
- Another key advantage is scale. Because the supply structure differs from mined diamonds, you can often choose a larger carat size within the same budget.
- For example, a price range that might typically allow around 1 carat in a natural diamond can open the door to a more substantial 2 or 3 carat presence in a lab-grown diamond.
- Lab-grown diamonds are a new choice that lets you enjoy authentic brilliance and ideal size at the same time.
Natural Diamonds and Lab-Grown Diamond
- Natural Diamond
- Natural diamonds require land use and energy-intensive mining. They are formed over hundreds of millions of years under extreme heat and pressure about 150 to 250 km below the earth's surface.
- Lab-Grown Diamond
- Because they do not require mining, lab-grown diamonds can reduce land disruption, while environmental impact still varies depending on the energy source used in production.
- Using HPHT or CVD growth methods, the same conditions are recreated in a laboratory and diamonds are grown in weeks to months.
- Because supply can be managed more efficiently, prices for similar quality often trend to about 30 to 60 percent of natural diamonds.
Lab-Grown Diamonds Around the World
- Lab-grown diamonds are expanding rapidly around the world.
- In the United States in particular, investment in research, development, and industrial applications continues to grow, helping accelerate adoption in the jewelry market as well.
- More people are now choosing lab-grown diamonds for engagement rings and wedding jewelry, and they are being recognized as a new diamond option.
- Advances in technology and changes in values are gradually reshaping the future of diamonds.
Tennis Bracelets - Unisex Motif
- Our diamonds are selected with care
- Quality you can trust
- Clarity VS1 or higher
- Includes identification report
- K18 Yellow Gold / K18 White Gold
- Color DEF
Available in Gold Metals Only
The Traditional Japanese Inome Motif
- Inspired by the traditional Inome motif
- Inome Heart designs are inspired by the traditional Japanese motif called Inome. Used in shrine architecture and crafts, it has long been cherished as a symbol of protection and good fortune.
- Its shape resembles a heart, making it a motif that combines beauty with meaning.
- A traditional symbol, reimagined as modern jewelry
- Inome Heart expresses this traditional Japanese motif as contemporary jewelry.
- The radiance of diamonds and the delicate Japanese sense of beauty come together to create a new jewelry design language.
Included Items
- To deliver your jewelry with complete peace of mind, every Inome Heart piece comes with a dedicated jewelry box and an identification report.
Signature Jewelry Box
- Each Inome Heart piece is delivered in our dedicated jewelry box.
- It is designed to store your jewelry beautifully and securely for years to come.
- Its simple and refined design makes the packaging feel as special as the jewelry itself.
Gift Presentation Box
- In addition to the standard jewelry box, Inome Heart offers a gift presentation box.
- Your jewelry is delivered in a presentation-ready box so it can be given as a gift immediately.
- It is an excellent choice for birthdays, anniversaries, and other meaningful occasions. Please select the gift box option when ordering.
- No invoice or other document showing the price is enclosed.
- The gift box does not include the Inome Heart logo.
Jewelry Identification Report
- Inome Heart includes an identification report that certifies the quality of your diamond.
- The report lists information such as the diamond type and quality, and clearly states that the stone is a lab-grown diamond.
IGI Grading Report
- Upon request, an IGI (International Gemological Institute) grading report can be added as a paid option.
- IGI is one of the world's leading gemological institutes and provides an independent evaluation of diamond quality and characteristics.
Buying Guide
- About payment methods
- Cash, bank transfer, and credit card are available. Only JCB and AMEX are currently accepted.
- About shipping fees
- We offer free shipping throughout Japan.
- All shipping costs are covered by our store.
- About our shipping carriers
- For security reasons, jewelry is shipped using one of the carriers below.
- Japan Post (security service, registered mail, etc.)
- Yamato Transport (TA-Q-BIN, security service)
- Because these are high-value items, all orders are shipped with tracking and face-to-face delivery.
- About returns
- Because Inome Heart jewelry is made to order, we do not accept returns, exchanges, or cancellations for customer convenience.
- Returns or exchanges are accepted only in the following cases.
- If the jewelry arrived damaged
- If the delivered jewelry does not match your order
- We cannot accept returns or exchanges in the following cases.
- If more than 5 days have passed since the date of receipt
- If the jewelry has been used
- If the jewelry has been repaired or cleaned by the customer
- About defective items
- Although every piece is carefully checked, we will respond in the following cases.
- If the jewelry arrived damaged
- If the delivered jewelry does not match your order
- Please contact us by email within the period below after delivery.
- For damage: within 3 days of arrival
- For shipping errors: within 5 days of arrival
- After confirmation, we will respond with an exchange or refund.
- When returning an item, please send the product back to us freight collect.
- Every story can take shape.
- Wedding anniversaries, gifts for family, and a reward for yourself.
- Inome Heart bespoke jewelry creates a one-of-a-kind piece that stays close to your life.
- Request a bespoke order
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Tennis Necklaces
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