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Heart|Lab Grown|IGI

1.57ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG528207699

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG528207699

Diamond specifications and retailer prices

From $343 AUD
$241 USD
As of October 30, 2026
Save $1,544 AUD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,887 AUD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.57ct lab-grown heart diamond

This 1.57ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG528207699 or 528207699. Listed at 16 retailers as of October 30, 2026, with prices from $343 to $1,887, a $1,544 spread on the same certified stone. Reve Diamonds lists it at $1,887. 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

1.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528207699
Dimensions8.11 × 6.90 × 4.63 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizePointed
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
8.11 mm6.90 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528207699
Side View
Table 58.5%Crown 35°Girdle: THK-VTKPavilion 38.4°Culet: NoneDepth 57.1%

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: Oct 30
Current: $849 AUD|Low: $330 AUD|High: $1,887 AUD|Avg: $857 AUD|+2.2%
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
Retailer 14
Retailer 15
Retailer 16
Reve Diamonds
October 31, 2026
Retailer 13$343 AUD
Retailer 7$384 AUD
Retailer 16$399 AUD
Retailer 3$426 AUD
Retailer 14$426 AUD
Retailer 9$547 AUD
Retailer 2$572 AUD
Retailer 8$668 AUD
Retailer 6$710 AUD
Retailer 4$786 AUD
Retailer 10$807 AUD
Retailer 1$849 AUD
Retailer 15$1,370 AUD
Retailer 12$1,374 AUD
Retailer 5$1,443 AUD
Retailer 11$1,709 AUD
Reve Diamonds$1,887 AUD

40 data points across 17 retailers

16 retailers$343 AUD to $1,887 AUD

A
Cheapest Retailer
-
$343 AUD
$241 USD
A
Retailer 2
-
$384 AUD
$270 USD
View
Final sale: no returns
A
Retailer 3
-
$399 AUD
$280 USD
View
A
Retailer 4
-
$426 AUD
$299 USD
View
A
Retailer 5
-
$426 AUD
$299 USD
View
A
Retailer 6
-
$547 AUD
£303 GBP
View
B+
Retailer 7
-
$572 AUD
$402 USD
View
B+
Retailer 8
-
$710 AUD
$499 USD
View
B+
Retailer 9
-
$786 AUD
$552 USD
View
B+
Retailer 10
-
$807 AUD
£447 GBP
View
B+
Retailer 11
-
$849 AUD
View
B
Retailer 12
-
$1,370 AUD
$962 USD
View
B
Retailer 13
-
$1,374 AUD
$965 USD
View
B
Retailer 14
-
$1,443 AUD
$1,014 USD
View
B
Retailer 15
-
$1,709 AUD
£945 GBP
View
Most Expensive
B
Reve Diamonds
F23C86C3D · Oct 30
$1,887 AUD
$1,326 USD
View
15 more retailers have this diamond
Prices start from $343 AUDSave up to $1,544 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
1.57ct Heart
$343 AUD