Purple & Violet Star Sapphire — Price and Buying Guide

"Purple star sapphire" is the second most-searched star sapphire color on this site after pink — and violet, its close cousin, shows up right alongside it in searches asking which is which. This guide prices both, explains what separates them, and works from two stones currently in stock: a 7.99ct purple and a 3.40ct violet, both unheated and GIA-documented.

Purple vs. Violet Star Sapphire — The Real Difference

Both colors come from the same chromium-plus-iron-and-titanium color mechanism that produces purple and violet in faceted sapphire generally, carried over into star material. Purple star sapphire reads as a true, saturated purple — chromium-forward, warmer than violet. Violet star sapphire sits closer to the blue end of the spectrum, with a cooler, more blue-leaning cast and typically less chromium influence. Neither is a "better" or more valuable color by default; pricing depends on saturation, star sharpness, and transparency within each color, not on purple vs. violet as a category. For the pink position in this same family, see our Pink Star Sapphire Price Guide.

How the Star Forms

As with every star sapphire color, the six-ray star comes from aligned rutile silk inclusions reflecting light when the stone is cut as a domed cabochon — never faceted. The mechanics are identical across colors; only the body color changes. See our Star Sapphire Buyer's Guide for the full asterism explanation.

Purple & Violet Star Sapphire Price by Quality Tier (2026)

Our current stock: a 7.99ct round cabochon purple star sapphire, GIA-documented and unheated, priced at $3,990 (about $500/ct); and a 3.40ct oval cabochon violet star sapphire, also GIA-documented and unheated, priced at $2,380 (about $700/ct). Both sit in the fine tier — the purple stone's larger size brings its per-carat rate down somewhat, which is typical for star material once a stone clears about 5 carats with a clean star, since large clean star rough is scarcer and commands attention independent of per-carat math.

What You Actually Get at Each Budget

Under $400 typically means a soft or partial star and muted, grayish color — usable, not investment-grade. $400–$1,500 is where a genuinely sharp star with real purple or violet saturation appears, generally in the 2–5ct range. Above $1,500 per carat, expect GIA documentation, a crisp unbroken star, and enough transparency that the body color reads clearly rather than looking like an opaque cabochon with a star painted on top.

Certification and Origin

Ceylon (Sri Lanka) is the benchmark origin for fine purple and violet star sapphire, producing the combination of saturated color and sharp asterism that the market pays the most for. Both of our current stones are Ceylon origin with GIA documentation confirming natural origin, unheated status, and star type. For stones represented as natural where a synthetic alternative exists at a much lower price, GIA or equivalent lab confirmation is not optional — see our natural star sapphire identification guide.

Frequently Asked Questions

What's the difference between purple and violet star sapphire?

Purple star sapphire reads as a warmer, more chromium-forward true purple. Violet star sapphire sits closer to blue, with a cooler cast and typically less chromium influence. Both are natural, distinct color positions in star corundum, graded and priced by the same star-sharpness and saturation criteria rather than one outranking the other.

How much does a purple star sapphire cost?

Fine purple or violet star sapphires with a sharp star and GIA documentation run $400–$1,500 per carat, with exceptional stones reaching $1,500–$6,000+ per carat. Our current 7.99ct GIA-documented purple star sapphire is priced at $3,990 total (about $500/ct); a 3.40ct GIA-documented violet example is $2,380 (about $700/ct).

Are purple star sapphires rare?

Purple and violet star material is less commonly seen than blue or grey star sapphire, since it requires both the chromium/iron-titanium chemistry that produces purple color and the rutile silk density needed for a sharp star to coincide in the same crystal. Large stones (5ct+) with a clean unbroken star in saturated purple or violet are genuinely scarce, which is reflected in the pricing above.

Explore Further

• Star Sapphire — The Complete Buyer's Guide
• Pink Star Sapphire Price Guide
• How to Tell If a Star Sapphire Is Natural
• Violet Sapphire — The Complete Buyer's Guide (faceted, not star)
• What Is a GIA Sapphire Report and How Do You Read One?

Have a question about our purple or violet star sapphires, or want to see options in a specific size or budget? Email crescentgems@gmail.com — we respond within one business day. Free US shipping; 14-day returns on every order.