Diamond 4C Quality Guide
The four core factors that determine a diamond’s appearance, sparkle, clarity, and value are: Cut, Color, Clarity, and Carat Weight.
Every stone in our collection is carefully selected and expertly matched to deliver maximum brilliance, fire, and long-term luxury wearability.
Cut is the most critical factor affecting a diamond’s shine. A well-cut diamond reflects and refracts light perfectly, creating outstanding brilliance and fire.
| Grade | Definition | Features |
|---|---|---|
| Excellent | Premium Perfect Cut | Maximum sparkle, ideal proportion, symmetrical, highest light performance. |
| Very Good | High Quality Cut | Great brilliance, minor proportion difference, excellent daily shine. |
| Good | Standard Cut | Acceptable sparkle, suitable for simple everyday jewelry. |
| Fair / Poor | Low Grade Cut | Dull light reflection, less brilliant; not used in our luxury pieces. |
Diamond color grading measures colorlessness. The closer to colorless, the rarer and more premium the stone.
| Grade | Level | Description |
|---|---|---|
| D / E / F | Colorless | Completely transparent, zero tint, top-tier luxury grade. |
| G / H | Near Colorless | Almost colorless, invisible tint to naked eye. |
| I / J | Slightly Tinted | Very faint warm tint, acceptable for daily wear. |
Clarity evaluates internal inclusions and surface blemishes. Natural diamonds naturally contain tiny unique mineral characteristics. Higher clarity means cleaner and rarer stones.
| Grade | Level | Explanation |
|---|---|---|
| FL / IF | Flawless | No internal or external imperfections; extremely rare collector grade. |
| VVS1 / VVS2 | Very Very Slight Inclusions | Microscopic inclusions, invisible to naked eye. |
| VS1 / VS2 | Very Slight Inclusions | Tiny minimal inclusions, perfect for luxury daily jewelry. |
| SI1 / SI2 | Slight Inclusions | Minor inclusions, invisible under normal wearing view. |
Carat refers to diamond weight (1 Carat = 0.2g). Larger carat weight represents larger size and higher rarity.
- Carat size does not solely determine value: A well-cut smaller carat diamond often sparkles brighter than a poorly-cut large diamond.
- Custom Calibration: We precisely match carat size according to each 18K gold design for balanced proportions.
- 0.1ct – 0.3ct: Mini accent stones
- 0.5ct: Classic elegant daily size
- 0.8ct – 1.0ct: Main luxury center stone
- 1.0ct+: High-end collector level diamonds
If you need professional diamond matching or personalized stone customization, please contact our customer service team.
