A synthetic block for optimizing performance of gemstones, comprising:
- a sealing member (1), a thermal insulator (2), a first conductor (3a), a second conductor (3b), a heater (4) and a high temperature and high pressure area (5);
- wherein the first conductor (3a) is provided at one end of the sealing member (1) and the second conductor (3b) is provided at another end of the sealing member (1),
- wherein the insulator (2) is provided with a first thermal insulation tube (21) disposed between the first conductor (3a) and the second conductor (3b), and a second thermal insulation tube (22) disposed between the first thermal insulation tube (21) and the sealing member (1), and a height of the second thermal insulation tube (22) is greater than a height of the first thermal insulation tube (21),
- wherein the high temperature and high pressure area (5) is formed inside the heater (4) and has a structure selected from any one of a center of the high temperature and high pressure area (5) passed through by a second heating sheet (43) and an integrated structure,
- wherein the heater (4) is provided with a first upper heating sheet (41a) and a first lower heating sheet (41b), when the center of the high temperature and high pressure area (5) is passed through by the second heating sheet (43), the heater (4) is further provided with a heating tube (42), the first upper heating sheet (41a) is disposed between the first conductor (3a) and the heating tube (42), and the first lower heating sheet (41b) is disposed between the second conductor (3b) and the heating tube (42), and one end of the heating tube (42) is connected to the first upper heating sheet (41a), another end of the heating tube (42) is connected to the first lower heating sheet (41b), and an outer surface of the heating tube (42) is adjacent to an inner surface of the first thermal insulation tube (21), and the second heating sheet (43) is arranged in parallel between the first upper heating sheet (41a) and the first lower heating sheet (41b), both ends of the second heating sheet (43) are connected to the heating tube (42),
- wherein a first area (5a) is defined by the first upper heating sheet (41a), the heating tube (42) and the second heating sheet (43), and a second area (5b) is defined by the first lower heating sheet (41b), the heating tube (42) and the second heating sheet (43),
- wherein one end of the first thermal insulation tube (21) is connected to the first upper heating sheet (41a), and another end of the first thermal insulation tube (21) is connected to the first lower heating sheet (41b), an outer surface of the second thermal insulation tube (22) is adjacent to the sealing member (1), and an inner surface of the second thermal insulation tube (22) is correspondingly adjacent to the first thermal insulation tube (21), a part of the first conductor (3a), and a part of the second conductor (3b).