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Heart|Lab Grown|IGI

1.28ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG752551204

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG752551204

Diamond specifications and retailer prices

From €164 EUR
$183 USD
As of October 30, 2026
Save €855 EUR (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,019 EUR at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.28ct lab-grown heart diamond

This 1.28ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG752551204 or 752551204. Listed at 18 retailers as of October 30, 2026, with prices from €164 to €1,019, a €855 spread on the same certified stone. Reve Diamonds lists it at €1,019. 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

1.28
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG752551204
Dimensions7.49 × 6.58 × 4.49 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.49 mm6.58 mm1.28 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG752551204
Side View
Table 62.0%Crown 37.9°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 59.9%

Caratlytics Score

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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 30
Current: €363 EUR|Low: €157 EUR|High: €1,020 EUR|Avg: €410 EUR|+3.7%
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
October 31, 2026
Retailer 11€164 EUR
Retailer 10€183 EUR
Retailer 2€190 EUR
Retailer 3€202 EUR
Retailer 12€202 EUR
Retailer 5€273 EUR
Retailer 1€363 EUR
Retailer 4€426 EUR
Retailer 7€453 EUR
Retailer 6€482 EUR
Retailer 13€652 EUR
Retailer 8€770 EUR
Retailer 9€953 EUR

43 data points across 13 retailers

18 retailers€164 EUR to €1,019 EUR

A
Cheapest Retailer
-
€164 EUR
$183 USD
A
Retailer 2
-
€183 EUR
$204 USD
View
Final sale: no returns
A
Retailer 3
-
€190 EUR
$212 USD
View
A
Retailer 4
-
€202 EUR
$226 USD
View
A
Retailer 5
-
€202 EUR
$226 USD
View
B+
Retailer 6
-
€273 EUR
$305 USD
View
A
Retailer 7
-
€363 EUR
£319 GBP
View
B+
Retailer 8
-
€395 EUR
$441 USD
View
B+
Retailer 9
-
€426 EUR
$476 USD
View
B+
Retailer 10
-
€453 EUR
A$778 AUD
View
B+
Retailer 11
-
€482 EUR
$539 USD
View
B+
Retailer 12
-
€513 EUR
$573 USD
View
B
Retailer 13
-
€652 EUR
$728 USD
View
B
Retailer 14
-
€661 EUR
SGD 998 SGD
View
B
Retailer 15
-
€700 EUR
$782 USD
View
B
Retailer 16
-
€770 EUR
$860 USD
View
B
Retailer 17
-
€953 EUR
£838 GBP
View
Most Expensive
B
Reve Diamonds
6E563C587 · Oct 30
€1,019 EUR
$1,138 USD
View
17 more retailers have this diamond
Prices start from €164 EURSave up to €855 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
1.28ct Heart
€164 EUR