Diamond (Laser-Drilled) Gemstone & Information | Gemopedia by JTV | Gemopedia™
In light or colorless gemstones, dark inclusions are more easily seen than colorless ones, so a means of lightening dark inclusions was developed using lasers. In laser drilling treatments, a narrow channel is laser drilled from the stone's surface to the dark inclusion. Once the open channel has been created, a mixture of boiling acid is introduced under pressure and the inclusion is subsequently bleached or dissolved.
Colorless, Gray, Light Yellow, Light Brown
Diamond-laser-drilled classificationCommonNameDiamond (Laser-Drilled)SpeciesDiamondVarietyLaser-Drilled DiamondColorsColorless, Gray, Light Yellow, Light BrownAlternateNamesGemstoneGroupsKeySeparationspolish luster, OTL RI, SR nature, flash effect in darkfield illumination, magnification, positive reaction to diamond testerClassificationComments
Diamond-laser-drilled chemistry & crystallographyChemicalNamecarbonChemicalFormulaCSynthesisCrystalSystemCubicChemistryClassificationNatureNaturalCrystallinityCrystallineChemistryComments
Diamond-laser-drilled optical propertiesTransparencyTransparent - OpaqueDispersionOpticalCommentsRefractiveIndex2.417-0BirefringenceOpticCharacterNAOpticSignNAPolariscopeReactionSingly Refractive (SR)FluorescenceSWUV: Variable
Diamond-laser-drilled characteristic physical propertiesHardness10CharacteristicCommentsStreakSpecificGravity3.51-3.53 Typical:3.52ToughnessVariesInclusionsThe stones will have laser drill holes that reach the surface and sometimes appear similar to wormhole like channels. The holes can be differentiated from natural etch channels because natural channels will have a geometric structure. Stones will have bleached white inclusions. If stones are glass filled they will display flash effect or interference color flash in darkfield lighting. Inclusions in these stones are typically trapped gas bubbles, cloudy or discolored material in fractures, crackled or web-like texture.LusterAdamantineStabilityVery GoodFractureStep-LikeCleavagePerfect, in four directions