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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 $509 AUD
As of November 4, 2026
Save $3,311 AUD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,820 AUD at Brilliant Earth · As of November 4, 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 November 4, 2026, with prices from $509 to $3,820, a $3,311 spread on the same certified stone. Brilliant Earth lists it at $3,820. 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
Colour
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

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: Nov 4
Current: $3,820 AUD|Low: $509 AUD|High: $4,790 AUD|Avg: $1,466 AUD|-20.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
November 5, 2026
Retailer 9$509 AUD
Retailer 3$590 AUD
Retailer 5$604 AUD
Retailer 17$630 AUD
Retailer 19$630 AUD
Retailer 13$647 AUD
Retailer 14$848 AUD
Retailer 7$981 AUD
Retailer 10$1,009 AUD
Retailer 16$1,088 AUD
Retailer 2$1,125 AUD
Retailer 4$1,262 AUD
Retailer 15$1,589 AUD
Retailer 18$2,027 AUD
Retailer 8$2,086 AUD
Retailer 11$2,279 AUD
Retailer 12$2,458 AUD
Retailer 6$2,626 AUD
Brilliant Earth$3,820 AUD

30 data points across 19 retailers

19 retailers$509 AUD to $3,820 AUD

A
Cheapest Retailer
-
$509 AUD
A
Retailer 2
-
$590 AUD
View
A
Retailer 3
-
$604 AUD
View
Final sale: no returns
A
Retailer 4
-
$630 AUD
View
Retailer 5
-
$630 AUD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$647 AUD
View
A
Retailer 7
-
$848 AUD
View
A
Retailer 8
-
$981 AUD
View
A
Retailer 9
-
$1,009 AUD
View
A
Retailer 10
-
$1,088 AUD
View
B+
Retailer 11
-
$1,125 AUD
View
B+
Retailer 12
-
$1,262 AUD
View
B+
Retailer 13
-
$1,589 AUD
View
B
Retailer 14
-
$2,027 AUD
View
B
Retailer 15
-
$2,086 AUD
View
B
Retailer 16
-
$2,279 AUD
View
B
Retailer 17
-
$2,458 AUD
View
B
Retailer 18
-
$2,626 AUD
View
Most Expensive
B
Brilliant Earth
21695228A · Nov 4
$3,820 AUD
$2,680 USD
View
18 more retailers have this diamond
Prices start from $509 AUDSave up to $3,311 AUD

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
$509 AUD