River Stone DiamondsPrivate Consultation

The River Stone collection

A more discerning
standard for diamonds.

We personally review the details that matter: grade, proportions, media, growth method and availability, before a stone enters this collection.

A considered selection of CVD and HPHT lab-grown diamonds, including fancy colors, with final availability and order details confirmed before any order is finalized.

Search a certificate number from any supplier listing. We’ll open the matching River Stone page when it is currently available.

Explore our guides: loose IGI-certified diamonds · IGI certificate lookup · fancy-color diamonds · colored-diamond pricing.

Shape
Choose one or more shapesEach shape enters the collection only after passing its own screening standard.
All shapes
Antique & specialty shapesExplore distinctive outlines that are currently available in the collection.
25 available shapes

Personally screened selection

Find the one that feels inevitable.

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RSD screened color
D-FEvery stone shown meets this color screen.
RSD screened clarity
VS2 or better for fancy colorColorless stones remain IF / VVS1 / VVS2 / VS1.
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Screened collection

Explore selected diamonds

Showing all 4,709 matching diamonds.

Refine the viewReturn to RSD SelectionShow considered shortlist

How RSD Selection worksWe begin with a curated shortlist. Every diamond shown passes our IGI, media, availability, growth-method and finish screens. Colorless stones stay within our stricter fluorescence screen; fancy-color stones retain the fluorescence grade reported on the certificate, including when it is not reported. RSD Selection places the strongest screened profiles first; it is a considered starting point—not a claim that one diamond is universally best.

2.63 carat Portuguese lab-grown diamond

RSD Selection Shown first for its screened grade profile

RSD-81305329D59F

2.63 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$1,399$532/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.63 carat Portuguese lab-grown diamond

RSD-08B5A385E095

2.63 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score93/100Evidence partial
$1,399$532/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.13 carat Portuguese lab-grown diamond

RSD-C497FED08DE8

2.13 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$1,299$610/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.81 carat Portuguese lab-grown diamond

RSD-CDA6439A66B9

1.81 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$1,099$607/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.72 carat Portuguese lab-grown diamond

RSD-3EA1FBD2E452

1.72 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$999$581/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.62 carat Portuguese lab-grown diamond

RSD-8BE68E6A61A2

1.62 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$949$586/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.37 carat Portuguese lab-grown diamond

RSD-D537FDC402C0

1.37 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$849$620/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.25 carat Portuguese lab-grown diamond

RSD-7CBD3592AF26

1.25 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score93/100Evidence partial
$799$639/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.05 carat Portuguese lab-grown diamond

RSD-C6ABCB7BF404

1.05 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score93/100Evidence partial
$399$380/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.05 carat Portuguese lab-grown diamond

RSD-271E811FAD67

1.05 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score93/100Evidence partial
$399$380/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.05 carat Portuguese lab-grown diamond

RSD-7E277A9BC414

1.05 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score93/100Evidence partial
$399$380/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.01 carat Portuguese lab-grown diamond

RSD-25F72CC7EAE8

1.01 ct Portuguese

D colorVVS2 clarityIGICVD

RSD Selection Score93/100Evidence partial
$449$445/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.15 carat Portuguese lab-grown diamond

RSD-517FD48E1786

2.15 ct Portuguese

D colorVS1 clarityIGICVD

RSD Selection Score98/100Evidence complete
$1,299$604/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.58 carat Portuguese lab-grown diamond

RSD-B21ECCEE943D

1.58 ct Portuguese

D colorVS1 clarityIGICVD

RSD Selection Score98/100Evidence complete
$599$379/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.37 carat Portuguese lab-grown diamond

RSD-98111CFE4D41

1.37 ct Portuguese

D colorVS1 clarityIGICVD

RSD Selection Score98/100Evidence complete
$849$620/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.17 carat Portuguese lab-grown diamond

RSD-4885AF980805

3.17 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$1,599$504/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.08 carat Portuguese lab-grown diamond

RSD-0556D7DB1ABA

3.08 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$1,599$519/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.06 carat Portuguese lab-grown diamond

RSD-0961678C9ED8

3.06 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$1,599$523/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.01 carat Portuguese lab-grown diamond

RSD-CEA3C1DEC76B

3.01 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score92/100Evidence partial
$1,599$531/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.76 carat Portuguese lab-grown diamond

RSD-8963AF518CB9

2.76 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score92/100Evidence partial
$799$289/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.23 carat Portuguese lab-grown diamond

RSD-3DA01DD65C12

2.23 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$899$403/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.13 carat Portuguese lab-grown diamond

RSD-0D4C0514DB1A

2.13 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$1,199$563/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.08 carat Portuguese lab-grown diamond

RSD-11E90A71E6C8

2.08 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score92/100Evidence partial
$749$360/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.78 carat Portuguese lab-grown diamond

RSD-1A97CE56F811

1.78 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score92/100Evidence partial
$999$561/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.2 carat Portuguese lab-grown diamond

RSD-E877E187AD65

1.20 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score92/100Evidence partial
$549$458/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.06 carat Portuguese lab-grown diamond

RSD-6DBB2B3C0590

1.06 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score92/100Evidence partial
$399$376/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.62 carat Portuguese lab-grown diamond

RSD-4E7E64426C12

2.62 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score97/100Evidence complete
$1,499$572/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.22 carat Portuguese lab-grown diamond

RSD-AA2102761226

2.22 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$849$382/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.07 carat Portuguese lab-grown diamond

RSD-FA1BD5CF584A

2.07 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$1,199$579/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.85 carat Portuguese lab-grown diamond

RSD-B8D7DC49CBFF

1.85 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$1,099$594/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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