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Radiant|Lab Grown|IGI

1.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG490176326

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG490176326

Diamond specifications and retailer prices

From $133 USD
As of November 6, 2026
Save $1,147 USD (90%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,280 USD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG490176326 or 490176326. Listed at 20 retailers as of November 6, 2026, with prices from $133 to $1,280, a $1,147 spread on the same certified stone. Do Amore Diamonds lists it at $1,280. 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

1.00
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490176326
Dimensions7.05 × 4.97 × 3.39 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.05 mm4.97 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490176326
Side View
Table 63.0%Crown 40.1°Girdle: MED-STKPavilion 35.1°Culet: NoneDepth 68.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,280 USD|Low: $128 USD|High: $1,280 USD|Avg: $412 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 9$133 USD
Retailer 7$149 USD
Retailer 14$154 USD
Retailer 15$165 USD
Retailer 3$237 USD
Retailer 5$258 USD
Retailer 10$311 USD
Retailer 2$321 USD
Retailer 13$345 USD
Retailer 12$395 USD
Retailer 6$550 USD
Retailer 4$560 USD
Retailer 8$585 USD
Retailer 11$848 USD
Do Amore Diamonds$1,280 USD

43 data points across 15 retailers

20 retailers$133 USD to $1,280 USD

A
Cheapest Retailer
-
$133 USD
A
Retailer 2
-
$149 USD
View
Final sale: no returns
A
Retailer 3
-
$154 USD
View
A
Retailer 4
-
$165 USD
View
A
Retailer 5
-
$219 USD
View
B+
Retailer 6
-
$258 USD
View
A
Retailer 7
-
$281 USD
View
A
Retailer 8
-
$311 USD
View
A
Retailer 9
-
$321 USD
View
A
Retailer 10
-
$345 USD
View
B+
Retailer 11
-
$395 USD
View
B+
Retailer 12
-
$411 USD
View
B
Retailer 13
-
$528 USD
View
B+
Retailer 14
-
$550 USD
View
B+
Retailer 15
-
$560 USD
View
B+
Retailer 16
-
$585 USD
View
B
Retailer 17
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$692 USD
View
B
Retailer 18
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$759 USD
View
B
Retailer 19
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$848 USD
View
Most Expensive
B
Do Amore Diamonds
27-4E1C3A675 · Nov 6
$1,280 USD
View
19 more retailers have this diamond
Prices start from $133 USDSave up to $1,147 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.

A
1.00ct Radiant
$133 USD