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.

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 4,778 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 Marquises

12 shown

1.84 carat Marquise lab-grown diamond

RSD Selection Shown first for its screened grade profile

RSD-BA845ACB6D2D

1.84 ct Marquise

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$449$244/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.74 carat Marquise lab-grown diamond

RSD-288543ABC7C1

1.74 ct Marquise

F colorVVS2 clarityIGICVD

RSD Selection Score88/100Evidence partial
$499$287/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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6.54 carat Marquise lab-grown diamond

RSD-F867BF6E9820

6.54 ct Marquise

F colorVS1 clarityIGICVD

RSD Selection Score96/100Evidence complete
$1,499$229/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.92 carat Marquise lab-grown diamond

RSD-F666DD90F5C8

1.92 ct Marquise

F colorVS1 clarityIGICVD

RSD Selection Score96/100Evidence complete
$399$208/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.8 carat Marquise lab-grown diamond

RSD-EBDE0EE3A44E

1.80 ct Marquise

F colorVS1 clarityIGICVD

RSD Selection Score96/100Evidence complete
$499$277/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3 carat Marquise lab-grown diamond

RSD-C96D25DD57F1

3.00 ct Marquise

Fancy Vivid Pink colorVVS2 clarityIGICVD

RSD Selection Score75/100Evidence partial
$1,699$566/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.56 carat Marquise lab-grown diamond

RSD-6EC3958BF864

2.56 ct Marquise

Fancy Vivid Pink colorVVS2 clarityIGICVD

RSD Selection Score86/100Evidence complete
$1,399$546/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.17 carat Marquise lab-grown diamond

RSD-3CD8DA292215

1.17 ct Marquise

Fancy Brown colorVVS2 clarityIGICVD

RSD Selection Score94/100Evidence complete
$749$640/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.11 carat Marquise lab-grown diamond

RSD-7067B90BB3DB

1.11 ct Marquise

Fancy Intense Brown colorVVS2 clarityIGICVD

RSD Selection Score94/100Evidence complete
$599$540/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1 carat Marquise lab-grown diamond

RSD-8F8155A35702

1.00 ct Marquise

Fancy Vivid Brown colorVVS2 clarityIGICVD

RSD Selection Score94/100Evidence complete
$599$599/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.55 carat Marquise lab-grown diamond

RSD-5BF37D661BC7

2.55 ct Marquise

Fancy Vivid Pink colorVS1 clarityIGICVD

RSD Selection Score93/100Evidence complete
$1,099$431/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.02 carat Marquise lab-grown diamond

RSD-34202FD34422

1.02 ct Marquise

Fancy Brown colorVS1 clarityIGICVD

RSD Selection Score93/100Evidence complete
$649$636/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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Selected Marquise Step Cuts

18 shown

5.11 carat Marquise Step Cut lab-grown diamond

RSD Selection Shown first for its screened grade profile

RSD-8A1933EA5602

5.11 ct Marquise Step Cut

D colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,599$509/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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5.04 carat Marquise Step Cut lab-grown diamond

RSD-08A243042945

5.04 ct Marquise Step Cut

D colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,599$516/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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4.61 carat Marquise Step Cut lab-grown diamond

RSD-2644725FBA56

4.61 ct Marquise Step Cut

D colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,199$477/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.61 carat Marquise Step Cut lab-grown diamond

RSD-264C6F8B4D0C

3.61 ct Marquise Step Cut

D colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,699$471/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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3.58 carat Marquise Step Cut lab-grown diamond

RSD-2C0F36E1DE66

3.58 ct Marquise Step Cut

D colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,699$475/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.05 carat Marquise Step Cut lab-grown diamond

RSD-A8D9370EFDA0

2.05 ct Marquise Step Cut

E colorVVS1 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$949$463/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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5.15 carat Marquise Step Cut lab-grown diamond

RSD-D3FE6A411815

5.15 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,599$505/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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5.05 carat Marquise Step Cut lab-grown diamond

RSD-11E5A72C16D1

5.05 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,599$515/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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4.83 carat Marquise Step Cut lab-grown diamond

RSD-A99FA4AA4FEC

4.83 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,299$476/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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4.18 carat Marquise Step Cut lab-grown diamond

RSD-B3447E35D0B8

4.18 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,999$478/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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4.1 carat Marquise Step Cut lab-grown diamond

RSD-777ADD46B788

4.10 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,999$488/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.65 carat Marquise Step Cut lab-grown diamond

RSD-45DD462BA8EC

2.65 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,199$452/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.54 carat Marquise Step Cut lab-grown diamond

RSD-0EDE2172B0D0

2.54 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,199$472/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.15 carat Marquise Step Cut lab-grown diamond

RSD-0EA67C50DD83

2.15 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$999$465/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.1 carat Marquise Step Cut lab-grown diamond

RSD-2FEEA4C07093

2.10 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$999$476/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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2.03 carat Marquise Step Cut lab-grown diamond

RSD-A5D68A00B737

2.03 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$949$467/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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1.95 carat Marquise Step Cut lab-grown diamond

RSD-A6DB8052C60B

1.95 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$799$410/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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4.28 carat Marquise Step Cut lab-grown diamond

RSD-83614331BB90

4.28 ct Marquise Step Cut

E colorVS1 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,099$490/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
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