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Round|Lab Grown|IGI

1.05ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG764604591

Shape and cutting style on the report: Round brilliant

Certificate IGI LG764604591

Diamond specifications and retailer prices

From $139 USD
As of November 5, 2026
Save $860 USD (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $999 USD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round 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 LG764604591 or 764604591. Listed at 20 retailers as of November 4, 2026, with prices from $139 to $999, a $860 spread on the same certified stone. Reve Diamonds lists it at $999. 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

1.05
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG764604591
Dimensions6.51 × 6.48 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.51 mm6.48 mm1.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG764604591
Side View
Table 56.0%Crown 35.8°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.3%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $288 USD|Low: $135 USD|High: $1,004 USD|Avg: $408 USD|+4.7%
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Retailer 18
Reve Diamonds
November 6, 2026
Retailer 18$139 USD
Retailer 4$155 USD
Retailer 16$161 USD
Retailer 5$172 USD
Retailer 17$172 USD
Retailer 1$288 USD
Retailer 10$289 USD
Retailer 14$307 USD
Retailer 6$322 USD
Retailer 13$408 USD
Retailer 15$410 USD
Retailer 12$440 USD
Retailer 7$479 USD
Retailer 9$490 USD
Retailer 3$494 USD
Retailer 2$554 USD
Retailer 8$609 USD
Retailer 11$803 USD
Reve Diamonds$999 USD

42 data points across 19 retailers

20 retailers$139 USD to $999 USD

A
Cheapest Retailer
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$139 USD
A
Retailer 2
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$155 USD
View
Final sale: no returns
A
Retailer 3
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$161 USD
View
Retailer 4
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$172 USD
View
Price last confirmed 12 days ago
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Retailer 5
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$172 USD
View
A
Retailer 6
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$288 USD
View
A
Retailer 7
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$289 USD
View
A
Retailer 8
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$307 USD
View
A
Retailer 9
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$322 USD
View
B+
Retailer 10
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$408 USD
View
Retailer 11
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$410 USD
View
Price last confirmed 12 days ago
Retailer 12
-
$432 USD
View
Price last confirmed 9 days ago
B+
Retailer 13
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$440 USD
View
B
Retailer 14
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$479 USD
View
B+
Retailer 15
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$490 USD
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B+
Retailer 16
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$494 USD
View
B
Retailer 17
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$554 USD
View
B
Retailer 18
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$609 USD
View
B
Retailer 19
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$803 USD
View
Most Expensive
B
Reve Diamonds
E37388FB0 · Nov 4
$999 USD
View
19 more retailers have this diamond
Prices start from $139 USDSave up to $860 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
1.05ct Round
$139 USD