0.57 Ct. Bluish Green Sapphire from Madagascar

This specimen is a transparent 0.57 carat oval sapphire, with dimensions 5.49 by 3.84 by 3.15 millimeters, exhibiting a mixed brilliant faceting scheme and an excellent polish. The mixed brilliant configuration combines a brilliant facet pattern on the crown with modified or step influenced facets on the pavilion, producing a balance between scintillation and depth of color. The length to width ratio is approximately 1.43, an elongation that reads as a classic oval silhouette ideal for both solitaire and halo settings. The measured total depth is approximately 67 percent relative to the average diameter, a proportion that contributes to controlled light return and helps maintain color saturation in this medium intense bluish green tone. Clarity is graded slightly included at eye level, with small internal features that are typical for natural sapphires from Madagascar, and do not materially interrupt the overall light performance when properly set. Enhancement disclosure is heat treated, a stable and widely accepted practice that optimizes hue and saturation, while the geographic origin is Madagascar, which is known for producing attractive teal and bluish green sapphires.

From a cutting and craftsmanship perspective, the mixed brilliant cut on this oval has been executed to emphasize front facet symmetry and facet junction crispness, which maximizes return of light through the table and crown facets while the pavilion geometry preserves color depth. The crown angles and facet arrangement are tailored to reduce windowing at this gem size, allowing the medium intense color to read consistently across different lighting conditions. The excellent polish enhances specular reflections and ensures minimal surface diffusion, which improves perceived transparency and brilliance. Because the pavilion depth is moderately deep, the stone exhibits a three dimensional appearance, with internal flashes that change with movement, while the elongated oval face up dimension concentrates color along the center line. These cutting choices make the sapphire versatile for precision settings where facet orientation and pavilion protection are key, and they maintain durability and wearability for everyday jewelry applications.

Color evaluation places this sapphire in a medium tone with medium to strong saturation, yielding a bluish green hue that sits in the teal spectrum. In gemological terms, the coloration is consistent with iron driven blue green tones influenced by trace element concentrations found in Malagasy deposits. Heat treatment has been applied to stabilize and enhance the hue, a practice that typically produces a uniform, durable color and reduces the likelihood of post purchase color shifts. Bluish green and teal sapphires are currently desirable within specialist markets because they offer a distinct identity between classic cornflower blue and green sapphire categories, appealing to collectors and designers seeking nuanced palette options. The stone’s medium intense color intensity allows it to read well both in neutral white light and in warmer lighting, providing versatility for use in bespoke fine jewelry where controlled color presentation is a priority.

From an investment perspective this 0.57 carat Madagascar bluish green sapphire carries attributes that support potential future appreciation, while also reflecting current market realities. Rarity factors include specific hue ranges and geographic provenance, and Madagascar has become an important secondary source for attractive non classic blue sapphires, which increases collector interest. Although heat treated material is generally valued below comparable untreated stones, high quality color, precise cutting, and excellent polish contribute materially to marketability and liquidity. Small stones in this weight range tend to offer easier access to the market for resale and can perform well when set in notable designs that emphasize color rather than size. Future appreciation potential is supported by constrained supply dynamics in select color hues, growing demand for colored gemstones among collectors and investors, and increasing consumer appreciation for origin documented material. To maximize long term value we recommend obtaining an authoritative laboratory report documenting origin, treatment, and gemological parameters, and we at The Natural Sapphire Company can assist with independent certification and with bespoke setting options that enhance both aesthetic presence and resale prospects. Purchasers who prioritize proven provenance, precise cutting, and documented disclosure will be best positioned to benefit from any future market appreciation.