DEDICATED QUALITY
Commitment to Quality
Specialty Brilliance
Our Signature Brilliance
Because brilliance should be enjoyed at its best, we select diamonds of higher beauty.
At BRIGHT & BREEZY, we carefully curate high-quality, beautifully sparkling lab-grown diamonds.
For your peace of mind, a third-party certificate of authenticity is included.
Because brilliance should be enjoyed at its best,
we select diamonds of higher beauty.
At BRIGHT & BREEZY, we carefully curate
high-quality, beautifully sparkling lab-grown diamonds.
For your peace of mind,
a third-party certificate of authenticity is included.
- CUT -
Cut is determined by how well the facets interact with light. Although “cut” may be confused with shape (heart, round, oval, etc.), it actually refers to proportions, symmetry, and polish. The better these are balanced, the higher the cut grade. For lab-grown diamonds of 1 ct or larger, we offer grades from 3 Excellent to Very Good. For stones under 1 ct, other grades are available on request. Skilled cutting brings out the diamond’s maximum brilliance.
Round Brilliant Cut
Fancy Cuts
- CARAT -
Carat measures weight, not size. 1 carat equals 200 milligrams. When other conditions such as CUT and CLARITY are equal, heavier stones command higher prices. Lab-grown diamonds make it possible to enjoy larger carats together with excellent characteristics.
CUT / COLOR / CLARITY
PRICE
3EX-VERY GOOD / D-F / IF-VS1
¥150,000 - ¥170,000
¥170,000 - ¥200,000
¥200,000 - ¥280,000
¥300,000 - ¥450,000
¥450,000 - ¥600,000
- CLARITY -
Clarity expresses how few inclusions (internal) and blemishes (external) a diamond has. Under 10× magnification, experts grade clarity as FL, IF, VVS1, VVS2, VS1, VS2, SI1…. Inclusions refract light and affect brilliance. We provide stones VS2 or higher so you can fully enjoy their beauty.
- COLOR -
Color is graded by the absence of color, with colorless as the standard. Most diamonds show a faint yellow tint. The closer to colorless, the rarer and more valuable. We typically offer near-colorless D, E, and F.
Vivid Color Diamonds
Thanks to advanced technology, lab-grown diamonds can display vivid colors that are extremely rare in nature—pink, blue, yellow, even fancy red.

G may appear only for stones over 3 ct.
DEDICATED MATERIALS
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Platinum
We primarily use Pt950. A rare metal with high durability and scarcity, it is favored for engagement and wedding rings. Fineness marks include 850, 900, 950, and 1000—the higher the number, the higher the platinum content. 1000 is pure platinum; 950 means 95% platinum with 5% other metals. Because platinum is relatively soft, alloys (e.g., palladium) are added for strength.
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Gold
We primarily use 18K gold. Purity is expressed in karats (K) out of 24: K24 (pure), then K22, K18, K14, K10. Although K24 is available, it is soft and prone to scratches or deformation. K18—75% gold with 25% other metals (such as silver, copper, or palladium)—is widely used for fine jewelry, and by varying the alloy, colors such as pink or white gold are possible.
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APPRAISAL
Appraisal Certificate
For peace of mind, a grading certificate is included for diamonds 1.0 ct and above. For smaller stones, certificates may be arranged as an option depending on stock. Use it as professional proof of authenticity.
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OUR MISSION
One of our missions is to update how diamonds are perceived for a new era.
In some producing regions, mining damages land and involves unsafe working conditions.
We handle only diamonds sourced with consideration for the environment and labor.
Beyond surface brilliance and beauty, we strive for a clean production process so you can wear them with confidence.
One of our missions is to update diamond perceptions for a new era.
In some regions, mining harms land and can involve unsafe labor conditions.
We select diamonds with environmental and labor care, aiming for a clean production process so you can wear them with confidence.


