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 4,713 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.

Selected Portugueses

26 shown

2.62 carat Portuguese lab-grown diamond

RSD Selection Shown first for its screened grade profile

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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1.8 carat Portuguese lab-grown diamond

RSD-834F25DDB789

1.80 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$999$555/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.5 carat Portuguese lab-grown diamond

RSD-E1706BAE54DB

1.50 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$449$299/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.5 carat Portuguese lab-grown diamond

RSD-6A7C4028F008

1.50 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$449$299/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Review this diamond ↗
1.21 carat Portuguese lab-grown diamond

RSD-5FA7BF46CC01

1.21 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$399$330/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.1 carat Portuguese lab-grown diamond

RSD-8CBA5138C1B8

1.10 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$399$363/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.05 carat Portuguese lab-grown diamond

RSD-4EB67A003B7A

1.05 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$349$332/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.01 carat Portuguese lab-grown diamond

RSD-570241B72020

1.01 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$349$346/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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5.2 carat Portuguese lab-grown diamond

RSD-E6C1CD9C894B

5.20 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$2,899$558/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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5.08 carat Portuguese lab-grown diamond

RSD-614BF6D1CAD3

5.08 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$1,899$374/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.85 carat Portuguese lab-grown diamond

RSD-B4E137D36807

3.85 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score91/100Evidence partial
$1,899$493/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.23 carat Portuguese lab-grown diamond

RSD-96738385E5CE

3.23 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$1,199$371/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.08 carat Portuguese lab-grown diamond

RSD-8F4E3BCF6616

3.08 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score91/100Evidence partial
$1,599$519/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.07 carat Portuguese lab-grown diamond

RSD-56678C6058F6

3.07 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score91/100Evidence partial
$849$277/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.66 carat Portuguese lab-grown diamond

RSD-D6A666611606

2.66 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score91/100Evidence partial
$849$319/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.65 carat Portuguese lab-grown diamond

RSD-588EBCDCD205

2.65 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score91/100Evidence partial
$949$358/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.52 carat Portuguese lab-grown diamond

RSD-196DC8E56F9C

2.52 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score91/100Evidence partial
$1,399$555/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.21 carat Portuguese lab-grown diamond

RSD-73638573BCA7

2.21 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$1,199$543/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.15 carat Portuguese lab-grown diamond

RSD-3BED7775921C

2.15 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$1,199$558/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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4.27 carat Portuguese lab-grown diamond

RSD-59A0C726B4C4

4.27 ct Portuguese

F colorVS1 clarityIGICVD

RSD Selection Score96/100Evidence complete
$1,999$468/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.53 carat Portuguese lab-grown diamond

RSD-38A67B38CE13

2.53 ct Portuguese

F colorVS1 clarityIGICVD

RSD Selection Score96/100Evidence complete
$799$316/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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5.58 carat Portuguese lab-grown diamond

RSD-7CCAD8AC5599

5.58 ct Portuguese

Fancy Vivid Pink colorVVS2 clarityIGICVD

RSD Selection Score94/100Evidence complete
$3,599$645/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.63 carat Portuguese lab-grown diamond

RSD-E9BC5165DA37

1.63 ct Portuguese

Fancy Vivid Pink colorVS1 clarityIGICVD

RSD Selection Score87/100Evidence partial
$1,099$674/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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Selected Princesss

4 shown

1.61 carat Princess lab-grown diamond

RSD Selection Shown first for its screened grade profile

RSD-5577475199B0

1.61 ct Princess

D colorVVS1 clarityIGICVD

RSD Selection Score92/100Evidence complete
$399$248/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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10.09 carat Princess lab-grown diamond

RSD-9869D8A24232

10.09 ct Princess

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$6,199$614/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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6.08 carat Princess lab-grown diamond

RSD-C20315B71B07

6.08 ct Princess

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$2,299$378/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.57 carat Princess lab-grown diamond

RSD-A7BDD5480720

2.57 ct Princess

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$599$233/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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