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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 $261 AUD
$183 USD
As of October 30, 2026
Save $1,360 AUD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,620 AUD 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 $261 to $1,620, a $1,360 spread on the same certified stone. Reve Diamonds lists it at $1,620. 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
Colour
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: $577 AUD|Low: $249 AUD|High: $1,623 AUD|Avg: $652 AUD|+3.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 11$261 AUD
Retailer 10$290 AUD
Retailer 2$302 AUD
Retailer 3$322 AUD
Retailer 12$322 AUD
Retailer 5$434 AUD
Retailer 1$577 AUD
Retailer 4$678 AUD
Retailer 7$720 AUD
Retailer 6$767 AUD
Retailer 13$1,036 AUD
Retailer 8$1,224 AUD
Retailer 9$1,515 AUD

44 data points across 13 retailers

18 retailers$261 AUD to $1,620 AUD

A
Cheapest Retailer
-
$261 AUD
$183 USD
A
Retailer 2
-
$290 AUD
$204 USD
View
Final sale: no returns
A
Retailer 3
-
$302 AUD
$212 USD
View
A
Retailer 4
-
$322 AUD
$226 USD
View
A
Retailer 5
-
$322 AUD
$226 USD
View
B+
Retailer 6
-
$434 AUD
$305 USD
View
B+
Retailer 7
-
$577 AUD
£319 GBP
View
B+
Retailer 8
-
$628 AUD
$441 USD
View
B+
Retailer 9
-
$678 AUD
$476 USD
View
B+
Retailer 10
-
$720 AUD
View
B+
Retailer 11
-
$767 AUD
$539 USD
View
B+
Retailer 12
-
$816 AUD
$573 USD
View
B
Retailer 13
-
$1,036 AUD
$728 USD
View
B
Retailer 14
-
$1,051 AUD
SGD 998 SGD
View
B
Retailer 15
-
$1,113 AUD
$782 USD
View
B
Retailer 16
-
$1,224 AUD
$860 USD
View
B
Retailer 17
-
$1,515 AUD
£838 GBP
View
Most Expensive
B
Reve Diamonds
6E563C587 · Oct 30
$1,620 AUD
$1,138 USD
View
17 more retailers have this diamond
Prices start from $261 AUDSave up to $1,360 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
$261 AUD