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3.54 carat fancy brown old miner lab grown diamond, VS1, IGI certified, face-up
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IGI report

LG836633094

FieldValue
ShapeOld Miner
Carat weight3.54
Color / ClarityFancy Brown / VS1
Polish / SymmetryExcellent / Excellent
FluorescenceNone
Measurements9.87 × 8.42 × 5.37 mm
Report date2026-09-16
Verify on IGI
Actual size

Face-up size

9.87 × 8.42 mm outline, compared with a round brilliant (approx. diameters).
0mm 5mm 10mm 15mm 20mm 25mm 3.54ct Old Miner approx. 6.5 mm round approx. 8.2 mm round approx. 9.4 mm round
Stock #1983677 · IGI LG836633094

Fancy Brown Old Miner Diamond Specifications

Grading: fancy color, clarity and finish

ShapeOld Miner
Carat weight3.54
ColorFancy Brown
IntensityFancy
HueBrown
ClarityVS1
PolishExcellent
SymmetryExcellent
FluorescenceNone

Measurements in mm

Length9.87 mm
Width8.42 mm
Depth5.37 mm
L/W ratio1.17
GrowthCVD
LocationNew York

IGI certificate

LabIGI
Report #LG836633094
Report date2026-09-16
Verify on IGI
From the IGI report

Fancy Brown Old Miner Proportions

Top view

9.87 mm TOP VIEW · 8.42 mm wide

Proportions

Table53.0%
Total depth—
Crown angle38.3°
Crown height18.5%
Pavilion angle41.7°
Pavilion depth40.5%
Girdle—
Culet—
Length9.87 mm
Width8.42 mm
Hover or tap a row to see it on the drawing.Tap a row to see it on the drawing.
Color guide

About Fancy Brown diamonds

“Fancy” is the intensity grade and “Brown” the hue on the IGI report. A brown lab-grown diamond like this one suits colored center diamonds and halos. We carry 8 fancy colors: Black, Blue, Brown, Brownish, Green, Orange, Pink and Yellow.

Custom & matching

Need it matched or set?

Set this diamond, find matched pairs, or send a spec and we'll source or cut to it.

  • 24-hour CAD · 4–6 working days to finished
  • Gold (14K/18K), silver, platinum · No MOQ
Shipping & location

In our NYC Diamond District office

Location36 W 47th St, Ste 601A
US shippingSame day before 6 PM ET
International3–4 business days
Minimum orderNo MOQ
Same color · in stock in New York first · hovertap to rotate

Similar Fancy Brown Lab-Grown Diamonds

Trade questions

Buying Fancy Brown Lab-Grown Diamonds Wholesale: FAQ

How big is a 3.54 carat old miner?

This 3.54 carat old miner measures 9.87 × 8.42 mm face-up and 5.37 mm deep. Shapes and cuts carry their weight differently, so compare diamonds by their mm size, not only by carat.

How fast does this diamond ship?

Orders placed before 6 PM ET ship the same day from New York. International delivery takes 3–4 business days.

Is the certificate real, and can I check it?

Yes. This diamond carries IGI report LG836633094, and you can verify it on IGI's website. We carry 10,000+ IGI/GIA-certified diamonds in stock. For how grading works, see GIA's guide to diamond quality factors.

How do I see the price?

Prices are shown to trade accounts only. Guru Diam sells to jewelers, retailers, designers and manufacturers. Applications submitted before 4 PM ET are approved the same business day, otherwise the next business day.

Is this diamond lab-grown or natural?

This one is lab grown, CVD, as stated on its IGI report. Lab-grown diamonds must be disclosed as such when you resell them; see our guide to FTC lab-grown diamond disclosure rules and the FTC's jewelry business guidance. We also carry certified natural diamonds, so if you need a natural diamond, ask us.

Wholesale for the trade

Wholesale Fancy Color Lab Grown Diamonds

Guru Diam is a B2B diamond supplier on 47th Street in the NYC Diamond District and in the Los Angeles diamond district, selling natural and lab-grown diamonds wholesale to jewelers, retailers, designers and manufacturers. Our fancy color lab grown diamonds wholesale range covers 8 colors, each diamond with its own IGI certificate.

This fancy brown lab grown diamond is a 3.54 carat old miner measuring 9.87 x 8.42 mm, IGI certified. Browse every brown lab-grown diamond, all fancy color lab-grown diamonds, read about wholesale lab grown diamonds in the NYC Diamond District, or see our certified natural diamonds. Lab diamonds and natural diamonds are sold to the trade only: open a trade account, or learn more about Guru Diam.

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