Deep Blue Sapphire Opaque 4.75 CT | Oval Cut Thailand
A deep blue sapphire of commanding presence, this four point seven five carat oval is cut with balanced symmetry and a confident outline. The bodycolor is midnight ink, reading opaque with a soft velvety glow that gathers along the crown facets. Broad facets and a tidy keel deliver bold reflections, while the mirror bright polish lends a graphite like luster across the table. Subtle internal clouds contribute to the silky appearance that collectors prize in dark blues. Face up the stone shows an elegant, even shape and impressive spread, destined to anchor a dramatic ring or a talisman pendant in either white or yellow gold.
Origin colon Thailand, from the Chanthaburi and Kanchanaburi fields renowned for inky blue sapphires and a storied gem trading tradition. Species colon corundum. Chemistry colon aluminum oxide Al two O three. Crystal system colon trigonal. Hardness colon nine on the Mohs scale with excellent toughness for daily wear. Optics colon refractive index about one point seven six to one point seven eight with birefringence near zero point zero zero eight, though pleochroism is subdued by the depth of color. Treatments colon heat is routine for this origin unless a laboratory report states otherwise. In our Vault this substantial sapphire is valued for its size and mood rich tone, an outstanding choice for a buyer seeking regal presence and enduring durability.
Fully certified for authenticity and quality, comes with a sensory experience that you won't forget. Don't miss your chance to own this stunning piece of earth wonder.
Deep Blue Sapphire Opaque 4.75 CT | Oval Cut Thailand
GEM STATS CHEMICAL FORMULA Aluminium oxide, Al2O3 COLOR Blue, Deep Blue, Cobalt Blue WEIGHT
4.75 Ct SHAPE AND CUT Oval Cut REFRACTIVE INDEX nω = 1.768–1.772
nε = 1.760–1.763GRADE Flawless Mohs scale 9 LUSTRE Vitreous TRANSPARENCY Opaque ORIGIN Thailand TREATMENT Natural
