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Round|Lab Grown|IGI

1.21ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG660459176

Certificate IGI LG660459176

Diamond specifications and retailer prices

From $780 USD
As of October 30, 2026
Save $540 USD (41%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,320 USD at Jared · As of October 30, 2026
View at Jared

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG660459176 or 660459176. Listed at 3 retailers as of October 30, 2026, with prices from $780 to $1,320, a $540 spread on the same certified stone. Jared lists it at $1,320. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
E
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG660459176
Dimensions6.90 × 6.93 mm
L/W Ratio1.00
Top View
6.90 mm6.93 mm1.21 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660459176
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 59.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $1,320 USD|Low: $780 USD|High: $1,320 USD|Avg: $1,034 USD
Jared
Retailer 2
Retailer 3
April 27, 2026
Retailer 2$780 USD
Retailer 3$780 USD
Jared$1,320 USD

7 data points across 3 retailers

3 retailers$780 USD to $1,320 USD

B
Cheapest Retailer
-
$780 USD
B
Retailer 2
-
$780 USD
View
Most Expensive
B
Jared
154541438 · Oct 30
$1,320 USD
View
2 more retailers have this diamond
Prices start from $780 USDSave up to $540 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.21ct Round
$780 USD