Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG843684291

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG843684291

Diamond specifications and retailer prices

From $149 USD
As of October 27, 2026
Save $718 USD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $867 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart 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 LG843684291 or 843684291. Listed at 12 retailers as of October 27, 2026, with prices from $149 to $867, a $718 spread on the same certified stone. MOH London lists it at $867. 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 angle32°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843684291
Dimensions6.21 × 7.01 × 4.01 mm
L/W Ratio1.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.21 mm7.01 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843684291
Side View
Table 62.0%Crown 32°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 57.2%

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: Oct 27
Current: $867 USD|Low: $149 USD|High: $912 USD|Avg: $399 USD|-4.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 7$149 USD
Retailer 6$173 USD
Retailer 11$185 USD
Retailer 4$194 USD
Retailer 2$241 USD
Retailer 9$288 USD
Retailer 3$339 USD
Retailer 5$351 USD
Retailer 8$503 USD
Retailer 12$593 USD
Retailer 10$627 USD
MOH London$867 USD

14 data points across 12 retailers

12 retailers$149 USD to $867 USD

A
Cheapest Retailer
-
$149 USD
A
Retailer 2
-
$173 USD
View
A
Retailer 3
-
$185 USD
View
A
Retailer 4
-
$194 USD
View
A
Retailer 5
-
$241 USD
£190 GBP
View
B+
Retailer 6
-
$288 USD
View
B+
Retailer 7
-
$339 USD
View
B+
Retailer 8
-
$351 USD
£276 GBP
View
B
Retailer 9
-
$503 USD
View
B
Retailer 10
-
$593 USD
View
B
Retailer 11
-
$627 USD
View
Most Expensive
B
MOH London
LG843684291 · Oct 29
$867 USD
£683 GBP
View
11 more retailers have this diamond
Prices start from $149 USDSave up to $718 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 Heart
$149 USD