What THC diamonds are

THC diamonds are crystals of tetrahydrocannabinolic acid (THCA). THCA is the acid form of THC and exists in raw cannabis. Heat removes a carboxyl group and converts THCA into THC. A diamond holds almost no THC until that reaction happens. Lab tests list diamond THCA at 90% to 99%. The crystal is clear to cloudy with a glass or rock texture. It carries little smell and little taste, so producers add terpene-rich sauce.

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How diamonds form

  1. An extractor runs dry cannabis with butane, propane, or a blend in a closed loop system.
  2. The oil is filtered and the solvent is purged.
  3. The oil goes into a glass jar. Terpenes and other compounds act as the solvent.
  4. The jar is sealed and held at room temperature for days to weeks.
  5. THCA molecules stack into a lattice. The liquid part, called sauce, sits around the crystals.

Cold helps. Many labs chill the solution below 32F to start nucleation. Time and the ratio of THCA to terpenes set crystal size. Diamonds run from 1 mm to over 20 mm. Multiply listed THCA by 0.877 to get the THC available after heating.

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Diamonds compared with other concentrates

How people use diamonds

Diamonds go onto a heated quartz or titanium banger, or into a vaporizer built for solids. THC boils at 315F. THCA decarboxylates near 220F to 240F. Most dabs run 400F to 600F. Below 315F the vapor is thin. Above 600F terpenes break down and the vapor turns harsh.

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Dosing needs a scale. A 30 mg chip of 95% THCA yields about 25 mg of THC after full conversion. That dose is high for a new consumer. Start with 5 mg to 10 mg of THC and wait 30 minutes before a second hit.

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Potency and effect

The effect of a diamond is the effect of THC: relaxation, altered perception, dry mouth, red eyes, a faster heart rate, and short-term memory loss. THCA on its own does not produce these effects. Diamond hits land fast because the vapor reaches the lungs and the bloodstream within minutes.

Risks

Concentrates deliver a large THC dose in one hit. The CDC recorded 2,807 hospitalized EVALI cases and 68 deaths in 2019 and 2020, and linked the outbreak to vitamin E acetate in THC vaporizer cartridges. High THC doses raise the odds of anxiety, paranoia, and repeated vomiting. Heated dabs also produce breakdown compounds that irritate the airway. The FDA has not approved cannabis flower or concentrates as medicine. State law controls sale and possession.

Storage

Keep diamonds in an airtight glass jar away from light, heat, and air. Heat and oxygen convert THCA to THC over time and soften the crystal. A cool, dark drawer works for weeks. Refrigeration slows the change but pulls moisture into the jar each time it opens.

Legal status

In the US, diamonds are legal only in states with medical or adult-use cannabis programs. Federal law lists cannabis and THC in Schedule I. Check state rules before purchase or transport. Carrying concentrate across a state line is a federal offense.