**Lab-Grown Diamonds**

Lab-grown diamonds, also known as synthetic or cultured diamonds, are diamonds that are produced in a laboratory rather than being mined from the earth. These diamonds have the same chemical composition and crystal structure as natural diamonds, making them visually and physically identical to their natural counterparts. However, there are a few key differences in their production process.

**Statement 1: They are produced using specific technology which mimics the geological processes that grow natural diamonds.**

This statement is correct. Lab-grown diamonds are created using a process called chemical vapor deposition (CVD) or high-pressure high-temperature (HPHT) methods. In the CVD process, a small diamond seed is placed in a chamber filled with carbon-rich gases. These gases are then heated to extreme temperatures, causing the carbon atoms to break apart and deposit onto the diamond seed, gradually growing it into a larger diamond. This process closely mimics the geological processes that occur deep within the Earth's mantle, where natural diamonds are formed over millions of years.

Similarly, in the HPHT process, a small diamond seed is placed in a press that applies high pressure and high temperature. This creates the necessary conditions for carbon atoms to come together and form a larger diamond. This process also replicates the natural geological conditions in which diamonds are formed.

**Statement 2: The Diamond simulants such as Moissanite and White Sapphire are used to make them look like natural diamonds.**

This statement is incorrect. Lab-grown diamonds are not made to look like natural diamonds using diamond simulants such as moissanite or white sapphire. Diamond simulants are non-diamond materials that are made to resemble the appearance of diamonds but have different chemical compositions and physical properties. They are not used in the production of lab-grown diamonds.

Lab-grown diamonds are created using carbon atoms that are arranged in the same crystal structure as natural diamonds. This gives them the same optical and physical properties as natural diamonds, including their brilliance, fire, and hardness. As a result, lab-grown diamonds are visually and physically indistinguishable from natural diamonds.

**Conclusion:**

In conclusion, statement 1 is correct as lab-grown diamonds are produced using specific technology that mimics the geological processes that grow natural diamonds. However, statement 2 is incorrect as lab-grown diamonds are not made to look like natural diamonds using diamond simulants. Therefore, the correct answer is option C, both statements 1 and 2 are correct.