1.64 ct Natural Unheated Violet Sapphire – Square Cushion

A natural 1.64 carat violet sapphire in a square cushion shape with Mixed Cut faceting, completely unheated and certified by AGCL (Arctic Gem Certification & Laboratory), Report #M263508. This is a clean, true violet — corundum's purple-family color caused by trace vanadium and chromium — at a substantial size that reads clearly as a center stone rather than an accent. Unheated status, confirmed by the AGCL report, means this color is exactly as the stone formed.

Rarity Analysis

Within the sapphire family, violet occupies a narrow color window that few production stones ever land in cleanly, and this stone's rarity comes from several independent factors stacking together rather than any single trait.

• Color: Violet is a genuinely uncommon sapphire color, sitting on the corundum color wheel between blue and pink/purple — most corundum production skews toward blue, pink, or yellow, with clean true violet far less frequently encountered.
• Size: Most violet sapphires reaching the market in eye-clean, well-cut condition run well under a carat; at 1.64 carats, this stone is large enough to function as a true center stone rather than an accent.
• Treatment: The large majority of commercial sapphire is heat-treated to improve color; this stone carries no such treatment, with AGCL Report #M263508 confirming no indication of heating.
• Clarity: Graded eye-clean, with no inclusions visible to the naked eye under normal viewing — a level of clarity not automatically present in an unheated stone, since heat treatment is often used industry-wide to improve the apparent clarity of included material.
• Documentation: AGCL Report #M263508 independently confirms the unheated status, weight, and dimensions, giving buyers verification that isn't available for undocumented stones sold on color claims alone.
• Combined effect: An uncommon color, a substantial carat weight, no heat treatment, strong clarity, and independent lab documentation rarely converge in one stone — it's this combination, not any single factor, that makes a stone like this difficult to replace once sold.

Buying Guidance

A few practical points to weigh before purchasing this specific stone:

• View it in a few different light sources. Violet sapphire can shift subtly between daylight and warm indoor lighting — check the stone under both before deciding on a setting.
• Plan the setting around a square cushion outline. At 6.56 x 6.48 x 4.40 mm, this stone will need a mounting sized to its squared corners; a four-prong or bezel setting that protects the corners is worth discussing with your jeweler.
• Confirm treatment disclosure when comparison shopping. Not every violet or purple sapphire on the market discloses heat treatment as clearly as AGCL Report #M263508 does here — always ask for the lab report, not just a verbal claim.
• Weigh the rarity against availability. Given the color, size, and unheated combination outlined above, a directly comparable stone may not surface again soon — factor that into your timeline if you're deciding between several options.
• Use the Try Before You Buy option if you would like to see the stone in hand before finalizing the purchase.

Learn More About This Gemstone

• Violet Sapphire Buyer's Guide
• Unheated Sapphire Guide
• How to Buy Natural Sapphires Online: What Certification Actually Tells You
• Custom Ring Guide
• Violet vs. Purple vs. Blue Sapphire Comparison
• Sapphire Buying Guide

Why Choose this 1.64 ct Unheated Violet Sapphire?

Violet sapphire is a genuinely uncommon color in the sapphire family, sitting between blue and pink/purple on the corundum color wheel. At 1.64 carats unheated, this square cushion is large enough to serve as a real center stone while offering the rarity that comes with a natural, untreated violet hue independently documented by AGCL Report #M263508.

Key Benefits of this Natural Violet Sapphire

• Completely Unheated
  No thermal treatment — AGCL Report #M263508 confirms no indication of heating.
• True Violet Color
  A clean, uncommon violet hue in the sapphire family, independently graded.
• Square Cushion, Mixed Cut
  Faceting designed to maximize brightness and color evenness across the face-up view.
• Center-Stone Weight
  At 1.64 carats, substantial enough to anchor a ring or pendant.
• Durable for Daily Wear
  Corundum at Mohs 9, second only to diamond.

Features

• Carat Weight: 1.64 Carats
• Gem Type: Natural Violet Sapphire
• Variety: Violet Sapphire
• Shape: Square Cushion
• Cut Style: Mixed Cut
• Dimensions: 6.56 x 6.48 x 4.40 mm
• Treatment: Unheated
• Color: Violet
• Clarity: Eye-clean — no visible inclusions under normal viewing
• Hardness: 9 on the Mohs scale
• Certification: AGCL Gemstone Report #M263508

This violet sapphire has been hand-selected for the clarity and evenness of its color — the quality that defines a genuine violet sapphire center stone.

One of a Kind

This is a single natural gemstone, not a manufactured or lab-created replica — no two sapphires form with identical color, clarity, and internal character. Once this stone sells, it's gone; there is no duplicate. What you see documented on the AGCL report is the exact, individual stone you receive.

Care

Sapphire is exceptionally durable (Mohs 9), but a few habits keep it looking its best. Clean with warm water, mild soap, and a soft brush; avoid ultrasonic or steam cleaners if the stone is set alongside softer or treatment-sensitive materials. Store separately from other jewelry to prevent surface scratches to softer pieces, and remove the stone before swimming, exercising, or household chemical exposure. As an unheated stone, no thermal treatment stabilizes the color — normal wear is fine, but avoid sudden extreme temperature changes.

Why Customers Love This Gemstone

• Unheated Violet: Natural color, independently verified — no thermal enhancement.
• Genuinely Uncommon: True violet is one of the rarer colors in the sapphire family.
• Center-Stone Ready: Sized to anchor an engagement ring or statement pendant.
• Trusted Source: Treatment disclosed honestly and independently certified by AGCL (Report #M263508).

Owning this 1.64 ct violet sapphire means choosing a genuinely uncommon, natural, unheated color with independent lab documentation.

Perfect Uses for this 1.64 ct Violet Sapphire

• Engagement ring center stone
• Statement pendant
• Custom jewelry design
• Collectors of unheated violet sapphires
• Distinctive anniversary or milestone gift