The difference between a hobbyist maintaining a gem collection and a professional generating revenue lies fundamentally in the ability to accurately grade raw material. To consistently pull high-yield investment stones from your cutting machine, you must master the delicate intersection of clarity, saturation, and precise geometric volume.
The Jackson’s Gems Standard
Since 2001, Jackson’s Gems has utilized a rigorous, zero-compromise grading pipeline to hand-select “Only the Finest” faceting rough. By strictly interpreting the 5-Tier standards outlined below, we guarantee that the material you secure from us possesses the exact chemical, optical, and geometric purity required to yield a world-class finished investment asset.
1. The 5-Tier Grading Standard
We categorize our rough inventory strictly based on five professional pillars. This straightforward classification empowers you to predictably align the specific rough with your ultimate manufacturing goals:
- AAA+ (Executive/Investment Grade): Exceptional color paired with IF (Internally Flawless) clarity. These stones boast the blocky geometric shape required for 40%+ yield. This represents the rarest 1% of total geographical production.
- AAA (Professional Grade): High-end, eye-clean material with one minor, manageable characteristic (an irregular shape or a microscopic veil) that a master cutter can easily “work around” to produce a flawless finished gem.
- AA (Commercial/Excellent): Professional-yielding material that may have two small flaws or one pronounced, visible inclusion. These stones cut stunning, highly brilliant gems but require highly strategic orientation to isolate the flaw.
- A Grade (Hobbyist): Affordable, often untrimmed natural rough. These crystals frequently contain veils, heavy silks, or thick skins. Ideal for practice cutting or high-character “Included” artisan jewelry.
- B Grade (Cabbing/Practice): Material displaying generally lower color saturation or significant, unyielding inclusions. Structurally best suited for cabochons or complex carving projects.
2. Clarity: Eye-Clean vs. 10x Magnification
While “Eye-Clean” is the absolute baseline for fine jewelry, true investment-grade materials demand a significantly harsher inspection. For chemically stable, highly transparent stones like Sapphire or Imperial Topaz, we strictly grade using 10x magnification. If absolutely zero inclusions are visible at 10x, it qualifies as an Internally Flawless (IF) or Very Very Slightly Included (VVS) piece—a true investment asset.
Master Advice: The “Skin” Factor
Many pieces of raw gemstone possess a thick, frosted “skin” resulting from geological transport or tumbling which easily hides internal veils. We often “window” our rough—polishing a tiny viewing facet into the side—to provide complete transparency to the buyer. However, a master must always use their loupe to scrutinize the deep pavilion space for “negative crystals” that might be lurking deeper than the window suggests.
3. Yield: The Math of Investment
In the faceting world, carat weight means nothing if the geometry is wrong. Shape directly dictates your maximum investment return.
Shape Matters: A blocky, “chunky” 5-carat crystal often holds drastically more absolute investment potential than a long, thin 15-carat shard. A chunky crystal comfortably accommodates the depth required for a high-performance pavilion, consistently allowing for a 30-45% finishing yield. Conversely, flat shards force you to sacrifice massive table width to gain pavilion depth, frequently resulting in a tragic 5-10% recovery rate.
Clean Sawn advantage vs. Natural: Jackson’s Gems frequently offers “Clean Sawn” rough. This means our lapidaries have already surgically removed the dead weight, cracked matrix, or useless geometry for you. Buying Clean Sawn rough offers you the absolute maximum possible recovery for your financial investment without paying for waste.
4. Identifying Final Investment Potential
When assessing a piece of rough, the most critical physical property to evaluate is “saturated but open” color. If an inherently dark stone visually “closes” and blacks out under normal incandescent lighting, it instantly loses secondary-market value, regardless of its size or flawless clarity.
The hallmark of a high-value asset—the gold standard of an investment piece—is an intensely saturated rough crystal that remains vibrant, bright, and internally reflective even in drastically low-light conditions.