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Radiant|Lab Grown|IGI

1.34ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG788670777

Certificate IGI LG788670777

Diamond specifications and retailer prices

From $665 USD
As of October 29, 2026
Save $575 USD (46%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,240 USD at Jared · As of October 28, 2026
View at Jared

About this 1.34ct lab-grown radiant diamond

This 1.34ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG788670777 or 788670777. Listed at 4 retailers as of October 28, 2026, with prices from $665 to $1,240, a $575 spread on the same certified stone. Jared lists it at $1,240. 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

1.34
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG788670777
Dimensions7.31 × 5.85 × 3.85 mm
L/W Ratio1.25
Top View
7.31 mm5.85 mm1.34 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788670777
Side View
Table 65.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 65.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $1,240 USD|Low: $665 USD|High: $1,680 USD|Avg: $991 USD|-26.2%
Jared
Retailer 2
Retailer 3
Retailer 4
September 28, 2026
Retailer 2$665 USD
Retailer 3$920 USD
Retailer 4$920 USD
Jared$1,240 USD

2 data points across 4 retailers

4 retailers$665 USD to $1,240 USD

B
Cheapest Retailer
-
$665 USD
B
Retailer 2
-
$920 USD
View
B
Retailer 3
-
$920 USD
View
Most Expensive
B
Jared
158641245 · Oct 28
$1,240 USD
View
3 more retailers have this diamond
Prices start from $665 USDSave up to $575 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
1.34ct Radiant
$665 USD