-
GB/T 42433-2023 in English
Gem testing—Infrared spectroscopy method
valid
Issued on:2023-05-23
$2,940.00 -
-
GB/T 42438-2023 in English
Service specification for gems and jade traceability system
valid
Issued on:2023-05-23
$420.00 -
GB/T 42645-2023 in English
Gems testing—Ultraviolet-visible absorbtion spectroscopy
valid
Issued on:2023-05-23
$2,248.00 -
GB/T 41760-2022 in English
Test method for spontaneous polarization of tourmaline
valid
Issued on:2022-10-12
$224.00 -
DB32/T 3978-2021 in English
Yuhua pebble—Identification and classification
valid
Issued on:2021-02-03
$420.00 -
T/GAC 10-2020 in English
Technical specification of fancy cut diamond―Marquise
valid
Issued on:2020-06-09
$476.00 -
T/GAC 12-2020 in English
Technical specification of fancy cut diamond―Heart
valid
Issued on:2020-06-09
$476.00 -