P.T.Diamonds Inc.

10/20/2026

Precision in every pass 💎
A closer look at diamond sieving at PTDiamonds.
Natural melee diamonds pass through precision sieves to separate stones into size groups before individual calibration with a leverage gauge.
This two-step approach allows us to maintain tight size tolerances of 0.025 mm, delivering the consistency and accuracy required for fine jewelry and watch manufacturing.

09/20/2026

💎 A clear understanding of the 4Cs remains fundamental to professional diamond selection.

Our latest guide covers cut, color, clarity, and carat weight, with practical context on how each factor influences appearance, grading, value, and sourcing decisions.

Read The 4 Cs of Diamonds: Color, Clarity, Cut & Carat on PTDiamonds.

Introduction Color, clarity, cut, and carat weight make up the 4 Cs of diamonds — the grading framework the Gemological Institute of America (GIA) formalized in the 1940s to give the diamond trade a common language. Before the 4 Cs, dealers described diamonds in relative

06/08/2026

💎 3.00 ct Natural Yellow Pear shape Diamond.
Natural vivid yellow diamonds represent one of the most sought-after categories in fancy color diamonds. This 3.00 ct example exhibits strong saturation, excellent face-up appearance, and the distinctive character collectors and designers value in natural color stones.

04/05/2026

Wishing you a joyful Easter filled with renewal, light, and meaningful moments. May the season bring clarity, warmth, and a fresh sense of inspiration.

03/24/2026

Matched and calibrated Round Brilliant Cut diamonds. A precise layout of 2-pointers and 30-pointers, carefully sorted for uniform size, consistent proportions, and balanced brilliance—prepared for designs where alignment and accuracy make the difference.

03/16/2026

https://www.vogue.com/slideshow/2026-oscars-best-jewelry-moments-diamonds

From yellow diamonds to rare sapphires, A-listers were dripping in jewels worth millions at the Oscars.

03/16/2026

Behind the scenes at PTDiamonds. Fresh batch of certified diamonds under review.

03/09/2026

Each stone selected for consistent proportions and clean step-cut symmetry, creating a balanced composition where alignment and clarity define the final design.

02/17/2026

Carefully matched natural melee diamonds calibrated for uniform size and consistent brilliance—prepared to frame a vivid natural ruby with balanced symmetry and clean light return.

02/14/2026

Wishing you a Valentine’s Day filled with sincere moments, quiet joy, and a love that grows stronger with time.

— PTDiamonds