User login

Enter your username and password here in order to log in on the website

Registration Forgot your password?

A German 18k gold and star ruby cabochon ring. - image-1

A German 18k gold and star ruby cabochon ring. - image-2

A German 18k gold and star ruby cabochon ring.

Round bezel with a cabochon cut star ruby (20.19 ct; c. 13.41 x 13.21 x 21.07 mm). Hallmarks: Fineness 750, maker's mark "PGH". Bezel diameter 1.4 cm. Ring size 51. Weight 9.20 g.
Paul Günter Hartkopf, Düsseldorf, ca. 1971.

Certificate

Material information according to the original invoice.

Provenance

Acquired from the studio in 1971.

This website uses cookies. Those have two functions: On the one hand they are providing basic functionality for this website. On the other hand they allow us to improve our content for you by saving and analyzing anonymized user data. You can redraw your consent to using these cookies at any time. Find more information regarding cookies on our Data Protection Declaration and regarding us on the Imprint.

Settings

Mandatory

These cookies are needed for a smooth operation of our website.

Name	Purpose	Lifetime	Type	Provider
CookieConsent	Saves your consent to using cookies.	1 year	HTML	Website

GoogleAnalytics

Name	Purpose	Lifetime	Type	Provider
DSID	Google: Security, Functionality, Advertising for AdSense, Campaign Manager, Google Ad Manager, Google Analytics, Display + Video 360, Search Ads 360	2 weeks	HTML	Google
test_cookie	Google: Functionality for AdSense, Campaign Manager, Google Ad Manager, Google Analytics, Display + Video 360, Search Ads 360	15 minutes	HTML	Google
IDE	Google: Advertising for Campaign Manager, Display + Video 360, Google Ad Manager, Google Analytics, Search Ads 360	24 months	HTML	Google
FPLC	Google: Analytics for Google Analytics	20 hours	HTML	Google
FPID	Google: Analytics for Google Analytics	2 years	HTML	Google
GA_OPT_OUT	Google: Functionality for Google Analytics	7 years	HTML	Google
__utma	Google: Analytics for Google Analytics	2 years	HTML	Google
__utmb	Google: Analytics for Google Analytics	30 minutes	HTML	Google
__utmc	Google: Analytics for Google Analytics	session	HTML	Google
__utmt	Google: Analytics for Google Analytics	10 minutes	HTML	Google
__utmz	Google: Analytics for Google Analytics	6 months	HTML	Google
__utmv	Google: Analytics for Google Analytics	2 years	HTML	Google
_ga	Used to distinguish users.	2 years	HTML	Google
_gat	Used to throttle request rate.	1 minute	HTML	Google
_gat_--custom-name--	Google: Analytics for Google Analytics	1 minute	HTML	Google
_gid	Used to distinguish users.	24 hours	HTML	Google
_ga_--container-id--	Persists session state.	2 years	HTML	Google
_dc_gtm_--property-id--	Used by DoubleClick (Google Tag Manager) to help identify the visitors by either age, gender or interests.	1 minute	HTML	Google
_gaexp	Google: Analytics for Google Analytics, Optimize	93 days	HTML	Google
_gaexp_rc	Google: Analytics for Google Analytics, Optimize	10 seconds	HTML	Google
_opt_awcid	Google: Analytics for Google Analytics, Optimize	24 hours	HTML	Google
_opt_awmid	Google: Analytics for Google Analytics, Optimize	24 hours	HTML	Google
_opt_awgid	Google: Analytics for Google Analytics, Optimize	24 hours	HTML	Google
_opt_awkid	Google: Analytics for Google Analytics, Optimize	24 hours	HTML	Google
_opt_utmc	Google: Analytics for Google Analytics, Optimize	24 hours	HTML	Google
_gac_--property-id--	Contains campaign related information for the user. If you have linked your Google Analytics and Google Ads accounts, Google Ads website conversion tags will read this cookie unless you opt-out.	90 days	HTML	Google
AMP_TOKEN	Contains a token that can be used to retrieve a Client ID from AMP Client ID service. Other possible values indicate opt-out, request in progress or an error retrieving a Client ID from AMP Client ID service.	1 year	HTML	Google

GoogleMaps

Name	Purpose	Lifetime	Type	Provider
GoogleMaps	Is used to connect to Google Maps and to display those maps.	none	Connection	Google
_gali	This cookie is used by Google Analytics. It is used to anonymously record the clicked elements within a page.	0,5 minutes	HTML	Google

YouTube

Name	Purpose	Lifetime	Type	Provider
YouTube	Is used to connect to YouTube and to display videos.	none	Connection	YouTube
1P_JAR	This Google cookie is used to optimize advertising to deliver ads relevant to users, improve campaign performance reports, or to prevent a user from seeing the same ads multiple times.	1 months	HTML	Google
CONSENT	This cookie stores the preferences and other information of the user. This includes in particular the preferred language, the number of search results to be displayed on the page and the decision whether or not to activate the SafeSearch filter of Google.	18 years	HTML	Google
NID	These cookies store user settings and user information for Google Maps.	6 months	HTML	Google
DV	These cookies store the preferences and other information of the user. This includes in particular the preferred language, the number of search results to be displayed on the page and the decision whether or not to activate the SafeSearch filter of Google.	5 minutes	HTML	Google

Lot 590 Dα

A German 18k gold and star ruby cabochon ring.

Certificate

Provenance