Round|Lab Grown|IGI

0.99ct I VS1 Round Lab Grown Diamond

EX • I/VS1 • IGI LG659428177

Shape and cutting style on the report: Round brilliant

Certificate IGI LG659428177

Diamond specifications and retailer prices

From $159 USD
As of October 30, 2026
1 retailer carries this diamond
Only listing: $159 USD at William & Sons Jewelers
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at William & Sons Jewelers

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG659428177 or 659428177. Listed at a single retailer as of October 30, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.99
Carat
I
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659428177
Dimensions6.37 × 6.39 × 3.97 mm
L/W Ratio1.00
Culet sizeNone
Cert comments
Presence of Subsurface inscription: Lightbox logo
Top View
6.37 mm6.39 mm0.99 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG659428177
Side View
Table 56.0%Crown 34.8°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $409 USD|Low: $113 USD|High: $914 USD|Avg: $507 USD|+43.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
William & Sons Jewelers
October 25, 2026
William & Sons Jewelers$159 USD
Retailer 2$312 USD
Retailer 1$409 USD
Retailer 3$540 USD
Retailer 4$914 USD

15 data points across 5 retailers

1 retailer

B+
William & Sons Jewelers
cert_LG659428177 · Oct 30
$159 USD
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Final sale: no returns

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B+
0.99ct Round
$159 USD