Most quartz changes hands on the strength of a photograph. Whether you are asking a forum to confirm an identification or listing a specimen for sale, the picture carries information that prose cannot: the shape of the termination, the run of the prism faces, the rust-coloured staining along a fracture. A few consistent habits — controlled light, a neutral background, something in frame to give scale — will improve your results far more than a new camera body.

Sort the light before you touch the camera

Bad lighting ruins more crystal photographs than bad lenses. Direct sunlight and on-camera flash both produce hard specular highlights on polished faces and deep, empty shadows in the matrix underneath. The fix is simple: two diffused light sources placed at roughly 45 degrees to the specimen, one slightly higher than the other, with a small white card opposite to bounce a little fill back in.

Diffusion matters as much as direction. A sheet of tracing paper, a white shower curtain or the diffuser panel that came with your LED panels will soften the source enough to show surface texture without blowing it out. If you have no lamps at all, overcast daylight in a sheltered spot outdoors is the cheapest excellent light there is — just keep the specimen out of any draught and watch for a colour cast from nearby foliage or brickwork.

For clear or smoky quartz with interesting inclusions, a single backlight behind the crystal tells a different story from front lighting, revealing internal veils, phantoms and rutile needles. Shoot both. Never mix a window with a household bulb in the same frame; the camera cannot balance two colour temperatures at once, and the result looks muddy.

Pick a background for the job it does

Backgrounds are not decoration; they control how much information reaches the viewer. Keep a small stock of matte, untextured surfaces and change them depending on what you need to show.

• Mid-grey card — the safest default. It does not bounce colour onto the specimen and it holds detail in both the palest milky quartz and the darkest smoky points.
• Matte black — excellent for showing internal clarity and inclusions in clear quartz, but edges disappear and dark specimens merge into the surface.
• White — bright and clean for listings, though it washes out pale amethyst and encourages highlights to clip.

Avoid patterned cloth, strongly grained wood and anything with a colour cast. One photograph on a neutral grey card, even if you later shoot a prettier one for the listing, gives you and your buyer a reliable reference point.

Always include a scale reference

A photograph without scale is an educated guess. A metal rule marked in millimetres is the clearest option; a scale cube or a plastic gauge card works just as well. If you use a coin, say which coin in the description, because a five-pence piece means nothing to a buyer in Ontario or Auckland.

Place the scale beside the specimen rather than behind it, so it sits on the same plane and does not appear distorted, and keep the camera square to the subject. Then work through a standard set of angles:

• The termination, straight on, so the face count and any chipping are visible.
• The prism faces, side on, to show the horizontal striations typical of quartz.
• The base or attachment point, including any matrix.
• Any label, catalogue number or old collection sticker.
• A close macro of damage, repairs or unusual inclusions.

Striations are one of the most useful identification features, and they only read clearly in a sharp, well-lit close-up. If your camera has a macro mode or a close-focusing lens, use it.

Getting colour right

Colour is where trust is won or lost. Amethyst photographed badly drifts blue; citrine turns neon; iron staining disappears entirely. Three habits keep you honest.

First, shoot in raw if your camera allows it, and set a custom white balance using a grey card placed in the scene for the first frame of each session. Lock that setting rather than leaving the camera on auto white balance, which will shift slightly between shots and make a set of images look inconsistent.

Second, resist saturation sliders. A gentle lift in contrast is usually fine; pushing vibrancy exaggerates purple and yellow and makes a specimen look better than it is, which tends to end in a returned parcel or an awkward email.

Third, remember that screens vary. Two monitors side by side will not agree on the same file, so state in your listing or post that colour may differ slightly from the screen, and describe the colour in words as well. Clean the specimen first — dust reads as sparkle at small sizes, and fingerprints on polished surfaces are surprisingly obvious. Handle by the edges, use a microfibre cloth, and keep a soft brush for matrix.

Identification shots and sale shots are different jobs

For identification, favour flat, even, almost clinical lighting, fill the frame with the crystal, and leave the scale in shot. Do not crop out the ugly chip on the base; the chip may be the clue. Include photographs of the matrix and any associated minerals, because the company a quartz crystal keeps often points to its locality.

For sale, you can allow yourself one styled hero image — softer light, a considered background, perhaps a slight angle that flatters the termination. Then add the documentary shots underneath. Buyers who know quartz will scroll straight past the hero image to check the base, the edges and the termination anyway. Disclose repairs, glue, polishing and any dye or coating, and photograph them plainly. It protects your reputation and saves you time on returns.

A repeatable workflow

1. Clean the specimen and set up your lights and diffuser.
2. Place the grey card in frame and set a custom white balance; then remove it.
3. Position the background and add the scale reference.
4. Shoot the standard angles first, front-lit, then repeat with backlighting for clear material.
5. Check focus at 100 per cent on the screen before moving on — a tripod or a stack of books under the camera helps enormously.
6. Edit lightly: crop, straighten, small contrast adjustment. Never clone out damage.
7. Save with a clear file name — specimen number, mineral, locality, size and date.

Keep the set together

Photograph a new specimen the day it arrives, while the label is still to hand and you still remember where it came from. Store the images in a folder alongside your catalogue entry, using the same angles and the same grey background every time, and you build a reference library that is genuinely useful for comparison. Ten minutes at the bench with a roll of grey card and a table lamp will teach you more about photographing quartz than any amount of reading — so pick a crystal, set it down, and start with the light.

Photo: SoyKhaler / Pixabay