Natural Black Diamonds are black diamonds supplied in different size and grading categories to meet requirements for jewellery, gemstone and other applications. The available grading information includes -000, -00, -0, -2, +2–5, +5–6.5, +6.5–8 and +8–15.
The supplied sieve chart provides additional size references, with visible sieve ranges from +14.0–14.5 to +19.5–20.0, corresponding approximately to 3.3 mm to 4.4 mm. The chart also provides approximate carat weight per piece, ranging from 0.150 ct to 0.340 ct across these visible size ranges.
| Grade / Size | Price |
|---|---|
| -000 | ₹14,500 |
| -00 | ₹13,000 |
| -0 | ₹11,500 |
| -2 | ₹9,500 |
| +2–5 | ₹8,500 |
| +5–6.5 | ₹7,500 |
| +6.5–8 | ₹6,500 |
| +8–15 | ₹6,000 |
| Sieve Size | Approx. Size | Approx. Weight/Piece |
|---|---|---|
| +14.0–14.5 | 3.3 mm | 0.150 ct |
| +14.5–15.0 | 3.4 mm | 0.160 ct |
| +15.0–15.5 | 3.5 mm | 0.170 ct |
| +15.5–16.0 | 3.6 mm | 0.180 ct |
| +16.0–16.5 | 3.7 mm | 0.190 ct |
| +16.5–17.0 | 3.8 mm | 0.210 ct |
| +17.0–17.5 | 3.9 mm | 0.230 ct |
| +17.5–18.0 | 4.0 mm | 0.250 ct |
| +18.0–18.5 | 4.1 mm | 0.270 ct |
| +18.5–19.0 | 4.2 mm | 0.300 ct |
| +19.0–19.5 | 4.3 mm | 0.320 ct |
| +19.5–20.0 | 4.4 mm | 0.340 ct |
Natural Black Diamonds are available in multiple grades and size specifications, allowing buyers to select material according to their required grading range. For bulk requirements, buyers can specify the required grade, sieve range, approximate MM size, carat weight per piece and quantity.
