A GIA Gem Diamond Proportion Comparator

Model #750000, working condition, used to demonstrate how light refraction is affected by the proportion/cut of a diamond by sliding the panel left and right under the directed light, comes with plast

U.S, GIA GEM, SANTA MONICA,CA. DIAMOND PROPORTION COMPARATOR & RESEARCH INSTRUMENTS ' American Made Scientific Gemological Research, Diamond Proportion LAB-INSTRUMENT. PLUG IT IN AND IT LIGHTS-UP. Nor

Model #760485, 10X with 30X objective, 155mm ocular, darkfield and overhead light, tilt swivel and two gem clips, appears to be working but in need of replacement bulb, on a round swivel stand, some s

----DETAILS---- MAIN STONE// Yellow diamond TCW// 2.87ct CUT// pear brilliant CLARITY// S12 COLOUR// fancy, light greyish, greenish, yellow natural

ONLY MAGNIFICENT JEWELS Gem Investiture. 2.27ct. GIA No Heat Sapphire Classic Royal Top Gem Blue 8.49 X 6.71 X 4.60 Vibrant Saturation Fully Faceted Oval Shape for maximum brilliance Clean Clarity and

Title: GIA Gem Quality Colombian Emerald Fine White Baguette Diamond Signed 18k Gold Ring Description: This signed 18k gold & diamond ring features an ultra-fine quality, approx. 1.25ct emerald cut

Art deco platinum diamond ring, center a gem quality brilliant cut diamond wt. 1.19ct in VS 2/ G quality (see GIA report), accented with 4 small gem quality diamonds, wt. 4.6gm, size 6.5

This is a beautiful 900-purity 2.10-carat oval-cut sapphire ring accented by 0.79 carats of tapered baguette and round brilliant diamonds. It comes with a Gia gem report. Stamped D079, 210, Pt900, on

900-purity platinum ring with a 0.74-carat oval-cut color change alexandrite center stone accented by 1.254 carats of round brilliant diamonds. It comes with a GIA gem report. Stamped Pt900, 0.74, D1.

Title: GIA Gem Quality 42ct Aquamarine Finely Faceted Solitaire Platinum Fine Diamond Halo Enhancer Pendant Description: I doubt you will EVER see another large aquamarine with better color than this

Tourmaline, diamond and 18k yellow gold ring Featuring (1) oval-cut blue tourmaline, weighing 17.42 cts, accompanied by a GIA Gem Trade Laboratory Tourmaline Report #2205299494, Dated May 16, 2019, st

This gorgeous 900-purity ring has a 1.27-carat tanzanite center stone surrounded by three halos of round brilliant diamonds totaling 1.07 carats. It comes with a Gia gem report. Stamped Pt900, 1.27, 1

An important platinum and 18K ring, center a natural chrysoberyl cat eye (貓眼石) wt. approx. 6.40ct (see GIA report), flanked by 2 gem quality kite cut diamond, each wt. 0.25ct, wt.

A beautiful art deco platinum diamond ring, center a gem quality diamond wt. 1.03ct in VS2/ E quality (GIA report), accented with gem quality baguette and round diamonds, tdw approx. 1.50ct, size 8.2

| Indicolite Blue Tourmaline | Natural 4.37 CT Indicolite Blue Tourmaline Loose Gem Stone & GIA Grading Certificate | Gold & Diamond Estate Collection | Weight:0.9 Grams, | Dimensions: Indicolite: 9mm

A beautiful 14K W/G art deco diamond ring, center a gem quality diamond, wt. 1.57ct, G/VS1 (see GIA report), size 7.65

A 14K W/G diamond ring, center a gem quality diamond wt. 1.36ct in D/ SI 1 quality (GIA certificate), size 7

Beautiful ruby, transparent with great luster, top origin (Burmese), these are the characteristics of this unique gem. GIA certified to ensure your investment. If you are looking for something unique,

Art deco 18K W/G diamond ring, center a gem quality diamond wt. 1.0ct in F/ VS 1 quality (GIA certificate), size 6.5

Beautiful 18K W/G art deco diamond ring, center a gem quality diamond wt. 1.0ct in F/ VS 1 quality (GIA certificate), size 6.5

Fine 14K Y/G diamond ring, center a gem quality diamond wt. 1.10ct in VVS 2/ J quality (GIA report), accented with 6 gem quality brilliant cut small diamonds, wt. 4.0gm, size 7

14K Y/G diamond ring, center a gem quality diamond wt. 1.10ct in J/ VVS 2 quality (see GIA report), accented with 13 channel set diamonds, tdw approx. 1.50ct, wt. 5.9gm, size 7

Art deco platinum diamon ring, center a gem quality diamond wt. 1.27ct (J/VS 2), accented with 10 small gem quality diamonds, tdw approx. 1.50ct with GIA certificate

14K Y/G ring, center a gem quality diamond wt. 1.0ct in J/ SI 2 quality (GIA report), size 7.2