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Heart|Lab Grown|IGI

1.28ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG836619541

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836619541

Diamond specifications and retailer prices

From €320 EUR
$357 USD
As of October 30, 2026
Save €2,079 EUR (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €2,399 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG836619541 or 836619541. Listed at 19 retailers as of October 30, 2026, with prices from €320 to €2,399, a €2,079 spread on the same certified stone. Brilliant Earth lists it at €2,399. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619541
Dimensions6.70 × 7.48 × 4.29 mm
L/W Ratio1.12
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
6.70 mm7.48 mm1.28 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619541
Side View
Table 58.0%Crown 38.4°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 57.4%

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: €2,399 EUR|Low: €320 EUR|High: €3,016 EUR|Avg: €974 EUR|-20.5%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 9€320 EUR
Retailer 3€371 EUR
Retailer 5€380 EUR
Retailer 17€396 EUR
Retailer 19€396 EUR
Retailer 13€409 EUR
Retailer 16€600 EUR
Retailer 7€616 EUR
Retailer 10€634 EUR
Retailer 15€681 EUR
Retailer 2€713 EUR
Retailer 4€792 EUR
Retailer 12€987 EUR
Retailer 18€1,273 EUR
Retailer 8€1,310 EUR
Retailer 11€1,431 EUR
Retailer 14€1,556 EUR
Retailer 6€1,649 EUR
Brilliant Earth€2,399 EUR

27 data points across 19 retailers

19 retailers€320 EUR to €2,399 EUR

A
Cheapest Retailer
-
€320 EUR
$357 USD
A
Retailer 2
-
€371 EUR
$414 USD
View
A
Retailer 3
-
€380 EUR
$424 USD
View
Final sale: no returns
A
Retailer 4
-
€396 EUR
$442 USD
View
A
Retailer 5
-
€396 EUR
$442 USD
View
A
Retailer 6
-
€409 EUR
£360 GBP
View
A
Retailer 7
-
€600 EUR
$670 USD
View
A
Retailer 8
-
€616 EUR
$688 USD
View
A
Retailer 9
-
€634 EUR
$708 USD
View
A
Retailer 10
-
€681 EUR
ZAR 12,284 ZAR
View
B+
Retailer 11
-
€713 EUR
£627 GBP
View
B+
Retailer 12
-
€792 EUR
$885 USD
View
B+
Retailer 13
-
€987 EUR
$1,103 USD
View
B
Retailer 14
-
€1,273 EUR
$1,422 USD
View
B
Retailer 15
-
€1,310 EUR
$1,463 USD
View
B
Retailer 16
-
€1,431 EUR
SGD 2,161 SGD
View
B
Retailer 17
-
€1,556 EUR
£1,369 GBP
View
B
Retailer 18
-
€1,649 EUR
$1,842 USD
View
Most Expensive
B
Brilliant Earth
21695228A · Oct 30
€2,399 EUR
$2,680 USD
View
18 more retailers have this diamond
Prices start from €320 EURSave up to €2,079 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
€320 EUR