CaratHunter
Plans
Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG823651927

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG823651927

Diamond specifications and retailer prices

From €143 EUR
$160 USD
As of October 30, 2026
Save €762 EUR (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €905 EUR at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

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 LG823651927 or 823651927. Listed at 16 retailers as of October 30, 2026, with prices from €143 to €905, a €762 spread on the same certified stone. Reve Diamonds lists it at €905. 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 LG823651927
Dimensions6.81 × 5.84 × 4.09 mm
L/W Ratio1.17
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.81 mm5.84 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823651927
Side View
Table 65.0%Crown 37.9°Girdle: STK-VTKPavilion 40°Culet: NoneDepth 60.1%

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 30
Current: €270 EUR|Low: €124 EUR|High: €918 EUR|Avg: €384 EUR|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 1, 2026
Retailer 3€129 EUR
Retailer 11€143 EUR
Retailer 7€158 EUR
Retailer 4€160 EUR
Retailer 9€215 EUR
Retailer 10€255 EUR
Retailer 1€270 EUR
Retailer 6€301 EUR
Retailer 12€509 EUR
Retailer 8€538 EUR
Retailer 2€559 EUR
Retailer 5€745 EUR
Reve Diamonds€905 EUR

43 data points across 13 retailers

16 retailers€143 EUR to €905 EUR

Retailer 1
-
€129 EUR
$144 USD
Price last confirmed 23 days ago
A
Retailer 2
-
€143 EUR
$160 USD
View
Final sale: no returns
Retailer 3
-
€151 EUR
$169 USD
View
Price last confirmed 33 days ago
Retailer 4
-
€158 EUR
$177 USD
View
Price last confirmed 7 days ago
Retailer 5
-
€159 EUR
$178 USD
View
Price last confirmed 36 days ago
Retailer 6
-
€160 EUR
$179 USD
View
Price last confirmed 28 days ago
B+
Retailer 7
-
€215 EUR
$240 USD
View
A
Retailer 8
-
€255 EUR
$285 USD
View
B+
Retailer 9
-
€270 EUR
£238 GBP
View
B+
Retailer 10
-
€301 EUR
£265 GBP
View
B
Retailer 11
-
€509 EUR
$569 USD
View
Retailer 12
-
€515 EUR
$575 USD
View
Price last confirmed 27 days ago
B
Retailer 13
-
€538 EUR
$601 USD
View
B
Retailer 14
-
€559 EUR
$625 USD
View
B
Retailer 15
-
€745 EUR
£655 GBP
View
Most Expensive
B
Reve Diamonds
68563366C · Nov 1
€905 EUR
$1,011 USD
View
15 more retailers have this diamond
Prices start from €143 EURSave up to €762 EUR

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
€143 EUR