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Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG836642970

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836642970

Diamond specifications and retailer prices

From €140 EUR
$156 USD
As of October 30, 2026
Save €802 EUR (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €942 EUR at Reve Diamonds · As of October 30, 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 LG836642970 or 836642970. Listed at 16 retailers as of October 30, 2026, with prices from €140 to €942, a €802 spread on the same certified stone. Reve Diamonds lists it at €942. 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 angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836642970
Dimensions6.93 × 5.97 × 4.16 mm
L/W Ratio1.16
Girdle conditionFaceted
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
6.93 mm5.97 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836642970
Side View
Table 54.0%Crown 32°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 60.0%

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: €302 EUR|Low: €131 EUR|High: €942 EUR|Avg: €411 EUR|+7.9%
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
Reve Diamonds
October 31, 2026
Retailer 8€140 EUR
Retailer 4€169 EUR
Retailer 9€172 EUR
Retailer 12€173 EUR
Retailer 7€260 EUR
Retailer 1€302 EUR
Retailer 10€314 EUR
Retailer 11€328 EUR
Retailer 6€457 EUR
Retailer 3€510 EUR
Retailer 5€542 EUR
Retailer 13€605 EUR
Retailer 2€793 EUR
Reve Diamonds€942 EUR

42 data points across 14 retailers

16 retailers€140 EUR to €942 EUR

A
Cheapest Retailer
-
€140 EUR
$156 USD
Retailer 2
-
€158 EUR
$176 USD
View
Price last confirmed 33 days ago
Retailer 3
-
€166 EUR
$186 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
€169 EUR
$189 USD
View
A
Retailer 5
-
€172 EUR
$192 USD
View
Final sale: no returns
A
Retailer 6
-
€173 EUR
$193 USD
View
B+
Retailer 7
-
€260 EUR
$290 USD
View
B+
Retailer 8
-
€302 EUR
£266 GBP
View
B+
Retailer 9
-
€314 EUR
$351 USD
View
B+
Retailer 10
-
€328 EUR
£289 GBP
View
B
Retailer 11
-
€457 EUR
$511 USD
View
B
Retailer 12
-
€510 EUR
$570 USD
View
B
Retailer 13
-
€542 EUR
$606 USD
View
B
Retailer 14
-
€605 EUR
$675 USD
View
B
Retailer 15
-
€793 EUR
£698 GBP
View
Most Expensive
B
Reve Diamonds
F0CE878DF · Oct 30
€942 EUR
$1,052 USD
View
15 more retailers have this diamond
Prices start from €140 EURSave up to €802 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
€140 EUR