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Cushion|Lab Grown|IGI

1.00ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG830650343

Shape and cutting style on the report: Cushion antique cut

Certificate IGI LG830650343

Diamond specifications and retailer prices

From $184 USD
As of October 29, 2026
Save $960 USD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,144 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion 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 LG830650343 or 830650343. Listed at 16 retailers as of October 28, 2026, with prices from $184 to $1,144, a $960 spread on the same certified stone. Reve Diamonds lists it at $1,144. 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 angle37.9°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830650343
Dimensions7.52 × 5.25 × 3.21 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.52 mm5.25 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830650343
Side View
Table 62.0%Crown 37.9°Girdle: MED-STKPavilion 40°Culet: LargeDepth 61.1%

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: Oct 29
Current: $413 USD|Low: $146 USD|High: $1,144 USD|Avg: $501 USD|+4.7%
Retailer 1
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
Reve Diamonds
October 30, 2026
Retailer 10$184 USD
Retailer 5$206 USD
Retailer 4$214 USD
Retailer 2$229 USD
Retailer 12$229 USD
Retailer 6$300 USD
Retailer 7$380 USD
Retailer 3$402 USD
Retailer 1$413 USD
Retailer 14$506 USD
Retailer 11$735 USD
Retailer 9$776 USD
Retailer 13$789 USD
Retailer 8$1,071 USD
Reve Diamonds$1,144 USD

43 data points across 15 retailers

16 retailers$184 USD to $1,144 USD

A
Cheapest Retailer
-
$184 USD
A
Retailer 2
-
$206 USD
View
Final sale: no returns
A
Retailer 3
-
$214 USD
View
A
Retailer 4
-
$229 USD
View
A
Retailer 5
-
$229 USD
View
A
Retailer 6
-
$300 USD
View
A
Retailer 7
-
$380 USD
€362 EUR
View
B+
Retailer 8
-
$402 USD
View
B+
Retailer 9
-
$413 USD
£325 GBP
View
B+
Retailer 10
-
$506 USD
A$778 AUD
View
B
Retailer 11
-
$620 USD
SGD 838 SGD
View
B
Retailer 12
-
$735 USD
View
B
Retailer 13
-
$776 USD
View
B
Retailer 14
-
$789 USD
View
B
Retailer 15
-
$1,071 USD
£843 GBP
View
Most Expensive
B
Reve Diamonds
0D8A5DAB5 · Oct 28
$1,144 USD
View
15 more retailers have this diamond
Prices start from $184 USDSave up to $960 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 Cushion
$184 USD