Prima facie glance can be futile, a stone having coarse skin surface with mother rock attached gives the appearance of a perfect mined crystal.
DownloadSwindling is not new for the field of Gemstones and Jewellery. Treatments on gemstones are usually done for enhancing their colour, clarity and beauty, ultimately to get their price hike.
DownloadSynthetic Moissanite (Silicon Carbide) a well-known substitute of Diamond. But easily differentiable from Diamond with its strong doubling and fine sub-parallel stringers oriented parallel to its optic axis direction.
DownloadSeveral types of assembled stones are formed with motive to create a bigger stone, by combining smaller stones together, in less of price to fetch more of money.
DownloadStudy of chelsea filter reaction under different illuminations of an Emerald, hosting other Emerald Crystal.
DownloadTopaz doctored rough was beautifully polished depicting striations parallel to octahedron edges and were made as in to show Trigons, natural growth markings present on diamond octahedron crystals.
DownloadSpurious diamonds, which are not actually diamond but are rather some other natural or synthetic stone, are getting frequent to encounter. Such stones are cut in Octahedral shape, to look like Natural Diamond Rough.
DownloadPrasiolite displaying prominent Brazil-law twinning, with very sharp twinning planes when the sample was observed parallel to the optic axis between crossed polarizing filters.
DownloadColourless synthetic sapphire concluded synthetic on the basis of curved growth banding in Diamond view instrument with unusual phosphorescence.
DownloadOne of the frequent inclusion to see in sapphire is phase inclusion, which is not as such surprising to talk about. Although, this phase inclusion must have surprised Sir David Brewster, in 1823, when it was first time encountered.
Download YouTube LinkRare Blue sapphire, emerald, and coral producing mollusks are found in Chilka Lake, of Odisha state on the east coast of India.!!!!!!
Tricksters are deliberately putting cut and polished glasses, fashioned in the shapes in which gemstones are usually traded, inside the mollusks with tweezers and then killing them brutally by opening them in front of buyers to form false authenticity in the eyes of buyers.
DownloadPrima facie, stone was appearing like Opal, but initial gemological testing results (R.I. 1.580 / S.G 2.34) were not identical to Opal. Conclusive identification could be made on LRS and the stone was identified to be rock consisting of Quartz and Opal. Stone was coated with the polymer, to give that strength and thickness.
DownloadIaA diamond, with clarity grade of SI2, contained several colorless crystals and one surface-breaking grayish green crystal. Under incandescent light, the grayish green crystal appeared purplish red, displaying a strong color-change phenomenon.
DownloadThe 1.42 ct CVD synthetic diamond showed a distinct grayish blue color after exposure to the short-wave UV radiation of the DiamondView.
DownloadInclusion analysis is the vital organ of gemmology. Hound’s tooth growth pattern / Chevron pattern is one of the characteristic inclusions for Hydrothermal Synthetic Emeralds. In Natural Emerald conical growth pattern was observed in the c-axis direction, resembling hound’s tooth like / chevron growth pattern.
DownloadNatural Purple Sapphire with Lath like flattened tubes in a single plane, intersecting each other at the angle of around 90 degree.
DownloadReport numbers inscribed on the submitted Lab grown CVD diamonds were found to be originally associated with Natural Diamonds. Actual dimensions of submited diamonds and dimensions mentioned on the original reports were similar enough to easily allege that original diamond identification reports are pertaining to submitted diamonds, which were later found as Lab Grown.
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