Credits

Last updated October 5, 2026

Hand tracking by Google MediaPipe; AR viewer by Google model-viewer; 3D by three.js.

Magnovera Showcase is built with the open-source software, fonts and data below. We are grateful to their authors. Each is used under its own licence; the full texts are linked, and all of them are collected in one file: third-party notices. We serve these files exactly as published (unmodified, version-pinned and checked by hash).

Open-source software

Fonts

• Manrope © 2019 The Manrope Project Authors, SIL Open Font License 1.1 (OFL text). Served from our own site.
• Jewelers' brand fonts, the fonts a jeweler can choose for their showcase in Branding. All are open-source fonts under the SIL Open Font License 1.1, unmodified (the Latin subset of each, as published through Google Fonts and packaged by Fontsource), and served from our own site: a visitor's browser never contacts Google Fonts.
  • Fraunces © 2020 The Fraunces Project Authors (OFL text)
  • Playfair Display © 2017 The Playfair Display Project Authors, Reserved Font Name “Playfair Display” (OFL text)
  • Cormorant Garamond © 2015 The Cormorant Project Authors (OFL text)
  • Bodoni Moda © 2020 The Bodoni Moda Project Authors (OFL text)
  • DM Serif Display © 2014–2017 Adobe Systems Incorporated, Reserved Font Name “Source”; © 2019 Google LLC (OFL text)
  • Libre Baskerville © 2012 The Libre Baskerville Project Authors (OFL text)
  • Marcellus © 2012 Brian J. Bonislawsky DBA Astigmatic (AOETI), Reserved Font Name “Marcellus” (OFL text)
  • Italiana © 2011 Santiago Orozco, reserved name Italiana (OFL text)
  • Instrument Sans © 2022 The Instrument Sans Project Authors (OFL text)
  • Inter © 2016 The Inter Project Authors (OFL text)
  • DM Sans © 2014 The DM Sans Project Authors (OFL text)
  • Work Sans © 2019 The Work Sans Project Authors (OFL text)
  • Nunito Sans © 2016 The Nunito Sans Project Authors (OFL text)
  • Lato © 2010–2011 tyPoland Łukasz Dziedzic, Reserved Font Name “Lato” (OFL text)
  • Karla © 2019 The Karla Project Authors (OFL text)

Data

• Refractive indices and dispersion of diamond and gemstones: fits of published dispersion formulas (Peter 1923; Wang et al. 2013; Wood & Nassau 1982; Malitson & Dodge 1972; Ghosh 1999; Tropf & Thomas 1991; SCHOTT glass data), largely via the refractiveindex.info database (M. N. Polyanskiy, CC0).
• Colour science: CIE 1931 2° colour-matching functions and illuminant D65 (CIE; numbers derived from them only), sRGB (IEC 61966-2-1).
• Metal colours: the ISO 8654 gold colour designations and published optical constants (Weaver 1977, rhodium; Tselin 2024, platinum; Palm et al. 2018 and Johnson & Christy 1974, palladium), and a manufacturer's published colour value for black rhodium.
• Gem colours. Each stone’s colour tone comes from one of three kinds of source, named with the gem data:
  • GIA research: Dubinsky, Stone-Sundberg & Emmett 2020, G&G 56:2-28 (corundum cross sections); Breeding et al. 2020 (diamond).
  • Open data: CC BY / CC0 spectra (digitised, fitted, rescaled) and published band facts, calibrated to independent colour targets. Per family:
  • Beryl: Emerald, aquamarine, morganite: Karampelas et al. 2019, Minerals 9:561, doi:10.3390/min9090561, and Hanser, Häger & Botcharnikov 2024, Eur. J. Mineral. 36:449, doi:10.5194/ejm-36-449-2024, CC BY 4.0: figures digitised, baseline-subtracted, fitted and rescaled (emerald plus the same paper's goshenite as the host beryl's residual absorption); hue targets from Zhang et al. 2025, Crystals 15:775, doi:10.3390/cryst15090775, CC BY 4.0
  • Quartz: Amethyst: Cheng & Guo 2020, Sci. Rep. 10:14927, doi:10.1038/s41598-020-71786-1, CC BY 4.0, supplementary Fig. 3b data, offset removed, converted and rescaled; citrine: band model (UV edge fitted to the same paper's 420 °C spectrum; Fe3+ band position from Sherman & Waite 1985, Am. Mineral. 70:1262, fact)
  • Peridot: USGS Spectral Library v7 (Kokaly et al. 2017, doi:10.5066/F7RR1WDJ, CC0 1.0), olivine GDS71 and GDS70 reflectance, inverted with Hapke's slab model and rescaled (modified by Magnovera; not endorsed by the USGS); composition and the tones' colour words (lightness, via ISCC-NBS, Kelly 1958) from Li, Zhao & Xu 2024, Crystals 14:689, doi:10.3390/cryst14080689, CC BY 4.0
  • Tanzanite: band parameters fitted to Fig. 4 of Pluthametwisute, Wanthanachaisaeng, Saiyasombat & Sutthirat 2020, Molecules 25:3743, doi:10.3390/molecules25163743, CC BY 4.0: digitised, band-model fit, rescaled
  • Spinel: Tang, Zhu, Liu & Guo 2025, PLOS ONE 20(8):e0312054, doi:10.1371/journal.pone.0312054, CC BY 4.0, S2 Table spectra resampled, baseline-corrected and rebuilt from fitted bands, colours from Table 3 and S3 Table; Wu et al. 2023, Minerals 13:226, doi:10.3390/min13020226, CC BY 4.0, colour ranges
  • Topaz: Maneewong et al. 2019, J. Phys. Conf. Ser. 1285:012022, doi:10.1088/1742-6596/1285/1/012022, and Skvortsova et al. 2015, IOP Conf. Ser. Mater. Sci. Eng. 80:012008, doi:10.1088/1757-899X/80/1/012008, CC BY 3.0: digitised, band-model fit, rescaled; cross-check Bonventi, Isotani & Albuquerque 2012, Adv. Condens. Matter Phys. 873804, doi:10.1155/2012/873804, CC BY 3.0; ISCC-NBS colour names (Kelly 1958, public domain)
  • Garnet: Lyutoev, Makeyev & Terekhov 2023, Lithosphere (Russia) 23(2):247, doi:10.24930/1681-9004-2023-23-2-247-269, CC BY 4.0, Table 9 bands and Fig. 11 background, digitised, recombined per ion and rescaled; Štubňa et al. 2019, Minerals 9:164, doi:10.3390/min9030164, CC BY 4.0, Fig. 6 digitised; colour targets and band positions from Yang & Guo 2022, Crystals 12:379, Zhu & Guo 2023, Crystals 13:1529, Ma & Guo 2022, Crystals 12:1677, CC BY 4.0
  • Tourmaline: Bosi et al. 2021, Mineral. Mag. 85:242, doi:10.1180/mgm.2021.20; Bosi et al. 2025, Eur. J. Mineral. 37:505, doi:10.5194/ejm-37-505-2025; Andreozzi et al. 2025, Eur. J. Mineral. 37:1, doi:10.5194/ejm-37-1-2025 (and supplement); Li, Tang & Li 2026, Crystals 16:404, doi:10.3390/cryst16060404; Karampelas et al. 2026, Minerals 16:964, doi:10.3390/min16090964; all CC BY 4.0: figures digitised, band-model fits, rescaled; facts from Altieri et al. 2022 and Pasetti et al. 2024 (CC BY 4.0)

  Model: research approximation; no published colorimetry.

  USGS Spectral Library data are used as modified by Magnovera; the U.S. Geological Survey has not endorsed this use, and any use of trade, firm or product names is for descriptive purposes only.

  CIE tables: CIE data tables: CIE 1931 colour-matching functions, 2 degree observer, doi:10.25039/CIE.DS.xvudnb9b; CIE standard illuminant D65, doi:10.25039/CIE.DS.hjfjmt59 (both 1 nm, CC BY-SA 4.0); sRGB primaries IEC 61966-2-1.

  Licences: Refractive-index data CC0 (refractiveindex.info); colour-matching functions CIE (CC BY-SA 4.0), derived numbers only; tones marked src 'open' derive from CC BY 3.0/4.0 articles and CC0 data, credited in SOURCES.open (changes made: digitised, fitted, rescaled); band positions and corundum cross sections are cited facts. Licences: CC BY 4.0 https://creativecommons.org/licenses/by/4.0/, CC BY 3.0 https://creativecommons.org/licenses/by/3.0/, CC0 1.0 https://creativecommons.org/publicdomain/zero/1.0/.

Trademarks

"QR Code" is a registered trademark of DENSO WAVE INCORPORATED. Rhinoceros is a registered trademark of Robert McNeel & Associates. Google, MediaPipe and Google Fonts are trademarks of Google LLC. Apple, AR Quick Look and Safari are trademarks of Apple Inc. GIA and IGI are trademarks of their owners; Magnovera is not affiliated with them. The diamond grades in Showcase are visual simulations, not certification. Naming a product here describes what we use; it does not imply endorsement.

Questions

Write to support@magnovera.com if you think something is missing or wrong here.