There are several ways to piece the eight sections of the Diamond birthstone. This is just one of them. Enjoy the process!


Note: Let's piece the heart-shaped diamond first by section. Then we'll attach the black background to each relevant section and sew them together. I'll step you through it below...

Section 1

Let’s start by piecing the smallest units together first...

  • Sew together 1-1 , 1-2, and 1-3 (Creating Unit 1:3)
  • Sew together 1-4 and 1-5 (Creating Unit 4:5)
  • Set aside 1-6; we’ll come back to it in a moment
  • Sew together 1-7 and 1-8 (Creating Unit 7:8)
  • Sew together 1-9 and 1-10 (Creating Unit 9:10)
  • Sew together 1-11, 1-12, and 1-13 (Creating Unit 11:13)
  • Sew together 1-14, 1-15, 1-16, and 1-17 (Creating Unit 14:17)
  • Set aside 1-18; we’ll come back to it in a moment
  • Sew together 1-19 and 1-20 (Creating Unit 19:20)

Now you can sew the following units together...

  • Sew together Unit 1:3 and Unit 4:5 (Creating Unit 1:5)
  • Sew together 1-6 and Unit 7:8 (Creating Unit 6:8)
  • Sew together Unit 1:5 and Unit 6:8 (Creating Unit 1:8)
  • Sew together Unit 9:10 with Unit 1:8 (Creating Unit 1:10)
  • Sew together Unit 11:13 and Unit 14:17 (Creating Unit 11:17)
  • Sew together Unit 1:10 with Unit 11:17 (Creating Unit 1:17)
  • Sew together 1-18 with Unit 19:20 (Creating Unit 18:20)
  • Sew together Unit 1:17 and Unit 18:20 to complete Section 1

Section 2

  • Sew together 2-1, 2-2, 2-3, 2-4, 2-5, 2-6 and 2-7 (Creating Unit 1:7)
  • Set aside 2-8; we'll come back to it in a moment
  • Sew together 2-9, 2-10, and 2-11 (Creating Unit 9:11)
  • Set aside 2-12; we'll come back to it in a moment
  • Sew together 2-13 and 2-14 (Creating Unit 13:14)
  • Sew together 2-15, 2-16, 2-17, and 2-18 (Creating Unit 15:18)

Now you can sew the following units together...

  • Sew together 2-8 and Unit 9:11 (Creating Unit 8:11)
  • Sew together Unit 8:11 and 2-12 (Creating Unit 8:12)
  • Sew together Unit 1:7 and Unit 8:12 (Creating Unit 1:12)
  • Sew together Unit 1:12 and Unit 13:14 (Creating Unit 1:14)
  • Sew together Unit 1:14 and Unit 15:18 to complete Section 2

Section 3

  • Sew together 3-1 and 3-2 (Creating Unit 1:2)
  • Sew together 3-3, 3-4, and 3-5 (Creating Unit 3:5)
  • Sew together 3-6 and 3-7 (Creating Unit 6:7)
  • Sew together 3-8, 3-9, 3-10, 3-11, 3-12, and 3-13 (Creating Unit 8:13)
  • Sew together 3-14 and 3-15 (Creating Unit 14:15)
  • Set 3-16 aside; we'll come back to it in a moment
  • Sew together 3-17, 3-18, and 3-19 (Creating Unit 17:19)
  • Sew together 3-16 and Unit 17:19 (Creating Unit 16:19)
  • Sew together 3-20, 3-21, and 3-22 (Creating Unit 20:22)
  • Sew together 3-23 and 3-24 (Creating Unit 23:24)

Now you can sew the following units together...

  • Sew together Unit 1:2 and Unit 3:5 (Creating Unit 1:5)
  • Sew together Unit 6:7 and Unit 8:13 (Creating Unit 6:13)
  • Sew together Unit 14:15 and Unit 16:19 (Creating Unit 14:19)
  • Sew together Unit 14:19 and Unit 20:22 (Creating Unit 14:22)
  • Sew together Unit 14:22 and Unit 23:24 (Creating Unit 14:24)
     
  • Sew together Unit 6:13 and Unit 14:24 (Creating Unit 6:24)
  • Sew together Unit 1:5 and 6:24 to complete Section 3

Section 4

  • Sew together 4-1 and 4-2 (Creating Unit 1:2)
  • Sew together 4-3 and 4-4 (Creating Unit 3:4)
  • Sew together Unit 3:4 and 4-5 (Creating Unit 3:5)
  • Sew together 4-6 and 4-7 (Creating Unit 6:7)
  • Sew Unit 6:7 and 4-8 (Creating Unit 6:8)
  • Sew 4-9 and 4-10 (Creating Unit 9:10)
  • Sew together 4-11 and 4-12 (Creating 11:12)
  • Set aside 4-13; we'll come back to it in a moment
  • Sew together 4-14 and 4-15 (Creating Unit 14:15)
  • Sew together 4-16 and 4-17 (Creating Unit 16:17)
  • Sew together 4-18, 4-19, 4-20 (Creating Unit 18:20)
  • Sew together 4-21 and 4-22 (Creating Unit 21:22)
  • Sew together 4-23 and Unit 21:22 (Creating Unit 21:23)
  • Sew together 4-24, 4-25, and 4-26 (Creating Unit 24:26)
  • Sew together 4-27 and 4-28 (Creating Unit 27:28)
  • Sew together 4-29, 4-30, and 4-31 (Creating Unit 29:31)
  • Sew together 4-32, 4-33, and 4-34 (Creating Unit 32:34)

Now you can sew the following units together...

  • Sew together Unit 3:5 and Unit 6:8 (Creating Unit 3:8)
  • Sew together Unit 9:10 and Unit 11:12 (Creating Unit 9:12)
  • Sew together Unit 3:8 and 9:12 (Creating Unit 3:12)
  • Sew together 4-13 and Unit 3:12 (Creating Unit 3:13)
  • Sew together Unit 14:15 and Unit 16:17 (Creating Unit 14:17)
  • Sew together Unit 14:17 and Unit 18:20 (Creating Unit 14:20)
  • Sew together Unit 14:20 and Unit 21:23 (Creating Unit 14:23)
  • Sew together Unit 14:23 and Unit 24:26 (Creating Unit 14:26)
  • Sew together Unit 14:26 and Unit Unit 27:28 (Creating Unit 14:28)
  • Sew together Unit 14:28 and Unit 29:31 (Creating Unit 14:31)
  • Sew together Unit 14:31 and Unit 32:34 (Creating Unit 14:34)
  • Sew together Unit 3:13 and Unit 14:34 (Creating Unit 3:34)
  • Sew together Unit 1:2 to 3:34 to complete Section 4
     

Section 5

  • Sew together 5-1 and 5-2 (Creating Unit 1:2)
  • Sew together 5-3 and 5-4 (Creating Unit 3:4)
  • Sew together 5-5, 5-6, and 5-7 (Creating Unit 5:7)
  • Sew together 5-8, 5-9, 5-10, and 5-11 (Creating Unit 8:11)
  • Sew together 5-12, 5-13 and 5-14 (Creating Unit 12:14)
  • Sew together 5-15, 5-16, 5-17, and 5-18 (Creating Unit 15:18)

Now you can sew the following units together...

  • Sew together Unit 1:2 and 3:4 (Creating Unit 1:4)
  • Sew together Unit 1:4 and 5:7 (Creating Unit 1:7)
  • Sew together Unit 8:11 and Unit 12:14 (Creating Unit 8:14)
  • Sew together Unit 1:7 and Unit 8:14 (Creating Unit 1:14)
  • Sew together Unit 1:14 and Unit 15:18 to complete Section 5

Section 6

  • Sew together 6-1, 6-2, 6-3, 6-4, 6-5, and 6-6 (Creating Unit 1:6)
  • Set 6-7 aside; we'll come back to it in a moment
  • Sew together 6-8, 6-9, and 6-10 (Creating Unit 8:10)
  • Set 6-11 aside; we'll come back to it in a moment
  • Sew together 6-12 and 6-13 (Creating Unit 12:13)
  • Sew together 6-14, 6-15, and 6-16 (Creating Unit 14:16)
  • Sew together 6-17, 6-18, 6-19, 6-20, and 6-21 (Creating Unit 17:21)

Now you can sew the following units together...

  • Sew together 6-11 and Unit 12:13 (Creating Unit 11:13)
  • Sew together Unit 11:13 and Unit 14:16 (Creating Unit 11:16)
  • Sew together Unit 8:10 and Unit 11:16 (creating Unit 8:16)
  • Sew together 6-7 and Unit 8:16 (Creating Unit 7:16)
  • Sew together Unit 1:6 and Unit 7:16 (Creating Unit 1:16)
  • Sew together Unit 1:16 and Unit 17:21 to complete Section 6

Section 7

  • Sew together 7-1, 7-2, and 7-3 (Creating Unit 1:3)
  • Sew together 7-4 and 7-5 (Creating Unit 4:5)
  • Sew together 7-6 and Unit 4:5 (Creating Unit 4:6)
  • Sew together 7-7 and 7-8 (Creating Unit 7:8)
  • Set 7-9 aside; we'll come back to it in a moment
  • Sew together 7-10 and 7-11 (Creating Unit 10:11)
  • Sew together 7-12 and 7-13 (Creating Unit 12:13)
  • Set 7-14 aside; we'll come back to it in a minute
  • Sew together 7-15 and 7-16 (Creating Unit 15:16)
  • Sew 7-17 to Unit 15:16 (Creating Unit 15:17)

Now you can sew the following units together...

  • Sew together Unit 4:6 and Unit 7:8 (Creating Unit 4:8)
  • Sew together Unit 1:3 and Unit 4:8 (Creating Unit 1:8)
  • Sew together 7-9 and Unit 1:8 (Creating Unit 1:9)
  • Sew together Unit 1:9 and Unit 10:11 (Creating Unit 1:11)
  • Sew together 7-14 and Unit 15:16 (Creating Unit 14:16)
  • Sew together Unit 14:16 and 7-17 (Creating Unit 14:17)
  • Sew together Unit 12:13 and 14:17 (Creating Unit 12:17)
  • Sew together Unit 1:11 and 12: 17 to complete Section 7

Section 8

  • Sew together 8-1 and 8-2 (Creating Unit 1:2)
  • Sew together 8-3 and 8-4 (Creating Unit 3:4)
  • Sew together 8-5 and 8-6 (Creating Unit 5:6)
  • Sew together Unit 5:6 and 8-7 (Creating Unit 5:7)
  • Sew together 8-8, 8-9, 8-10, and 8-11 (Creating Unit 8:11)
  • Sew together Unit 8:11 and 8-12 (Creating Unit 8:12)
  • Sew together 8-13 and 8-14 (Creating Unit 13:14)
  • Sew together 8-15 and 8-16 (Creating Unit 15:16)
  • Sew together 8-17 and 8-18 (Creating Unit 17:18)
  • Set aside 8-19; we'll come back to it in a moment
  • Sew together 8-20 and 8-21 (Creating Unit 20:21)
  • Sew together Unit 20:21 and 8-22 (Creating Unit 20:22)
  • Sew together 8-19 and Unit 20:22 (Creating Unit 19:22)
  • Sew together 8-23 and Unit 19:22 (Creating Unit 19:23)
  • Sew together 8-24 and 8-25 (Creating Unit 24:25)
  • Sew together 8-26 and 8-27 (Creating Unit 26:27)
  • Sew together 8-28, 8-29, and 8-30 (Creating Unit 28:30)
  • Sew together 8-31 and 8-32 (Creating Unit 31:32)
  • Sew together 8-33, 8-34, and 8-35 (Creating Unit 33:35)
  • Sew together 8-36, 8-37, 8-38, and 8-39 (Creating Unit 36:39)

Now you can sew the following units together...

  • Sew together Unit 3:4 and 5:7 (Creating Unit 3:7)
  • Sew together Unit 1:2 and Unit 3:7 (Creating Unit 1:7)
  • Sew together Unit 1:7 and Unit 8:12 (Creating Unit 1:12)
  • Sew together Unit 1:12 and Unit 13:14 (Creating Unit 1:14)
     
  • Sew together Unit 15:16 and Unit 17:18 (Creating Unit 15:18)
  • Sew together Unit 15:18 and Unit 19:23 (Creating Unit 15:23)
  • Sew together Unit 24:25 and Unit 26:27 (Creating Unit 24:27)
  • Sew together Unit 15:23 and Unit 24:27 (Creating Unit 15:27)
  • Sew together Unit 15:27 and Unit 28:30 (Creating Unit 15:30)
  • Sew together Unit 15:30 and Unit 31:32 (Creating Unit 15:32)
  • Sew together Unit 15:32 and Unit 33:35 (Creating Unit 15:35)
     
  • Sew together Unit 1:14 and Unit 15:35 (Creating Unit 1:35)
  • Sew together Unit 1:35 and Unit 36:39 to complete Section 8

Now let's piece the diamond heart sections together, along with the black background pieces...

We'll first piece the LEFT half of the diamond together (Sections 1 - 4, and background pieces 9-1 and 9-2)

  • Sew together Section 1 and Section 2
  • Take your fabric pencil and extend the hash marks from the edge of the freezer paper into the seam allowance along both sides of Sections 1 and 2
  • Again with your fabric pencil, extend the hash marks along the curved edge of 9-1 (the black background piece)
  • With your scissors, clip the curved edge of 9-1 (black background) approximately 1/4" apart
  • Remove the freezer paper from Sections 1 and 2, as well as from 9-1
  • Align the hash marks of 9-1 with the adjoining marks of Sections 1 and 2, easing the seam as you go. Pin generously.
     
  • Sew together Section 3 and Section 4
  • Take your fabric pencil and extend the hash marks from the edge of the freezer paper into the seam allowance along both sides of Sections 3 and 4
  • Again with your fabric pencil, extend the hash marks along the curved edge of 9-2 (the black background piece)
  • With your scissors, clip the curved edge of 9-2 (black background) approximately 1/4" apart
  • Remove the freezer paper from Sections 3 and 4, as well as from 9-2
  • Align the hash marks of 9-2 with the adjoining marks of Sections 3 and 4, easing the seam as you go. Pin generously.
     
  • Now you'll have 2 pieced sections that comprise the LEFT half of the Diamond. Align these 2 sections together along the hash marks and pin generously. Sew together. 

Now we'll first piece the RIGHT half of the diamond together (Sections 5 - 8 and background pieces 9-3 and 9-4)

    • Sew together Section 5 and Section 6
    • Take your fabric pencil and extend the hash marks from the edge of the freezer paper into the seam allowance along both sides of Sections 5 and 6
    • Again with your fabric pencil, extend the hash marks along the curved edge of 9-4 (the black background piece)
    • With your scissors, clip the curved edge of 9-4 (black background) approximately 1/4" apart
    • Remove the freezer paper from Sections 5 and 6, as well as from 9-4
    • Align the hash marks of 9-4 with the adjoining marks of Sections 5 and 6, easing the seam as you go. Pin generously.
       
    • Sew together Section 7 and Section 8
    • Take your fabric pencil and extend the hash marks from the edge of the freezer paper into the seam allowance along both sides of Sections 7 and 8
    • Again with your fabric pencil, extend the hash marks along the curved edge of 9-3 (the black background piece)
    • With your scissors, clip the curved edge of 9-3 (black background) approximately 1/4" apart
    • Remove the freezer paper from Sections 7 and 8, as well as from 9-3
    • Align the hash marks of 9-3 with the adjoining marks of Sections 7 and 8, easing the seam as you go. Pin generously.
       
    • Now you'll have 2 pieced sections that comprise the RIGHT half of the Diamond. Align these 2 sections together along the hash marks and pin generously. Sew together. 

    Now sew together the LEFT and RIGHT side of the diamond, matching along the hash marks and paying close attention to align the seam where the heart facets meet the black background.