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Heart|Lab Grown|IGI

1.00ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG517287920

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG517287920

Diamond specifications and retailer prices

From $238 AUD
$167 USD
As of October 30, 2026
Save $992 AUD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,229 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG517287920 or 517287920. Listed at 13 retailers as of October 26, 2026, with prices from $238 to $1,229, a $992 spread on the same certified stone. MOH London lists it at $1,229. 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

1.00
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517287920
Dimensions6.20 × 6.81 × 3.95 mm
L/W Ratio1.10
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
6.20 mm6.81 mm1.00 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517287920
Side View
Table 59.5%Crown 34°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 58.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,229 AUD|Low: $212 AUD|High: $1,242 AUD|Avg: $613 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 5$212 AUD
Retailer 6$238 AUD
Retailer 3$356 AUD
Retailer 8$450 AUD
Retailer 2$456 AUD
Retailer 7$609 AUD
Retailer 4$893 AUD
Retailer 9$923 AUD
MOH London$1,229 AUD

40 data points across 9 retailers

13 retailers$238 AUD to $1,229 AUD

Retailer 1
-
$212 AUD
$149 USD
Price last confirmed 8 days ago
A
Retailer 2
-
$238 AUD
$167 USD
View
Final sale: no returns
Retailer 3
-
$246 AUD
$173 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$263 AUD
$185 USD
View
A
Retailer 5
-
$263 AUD
$185 USD
View
B+
Retailer 6
-
$356 AUD
$250 USD
View
B+
Retailer 7
-
$450 AUD
$316 USD
View
B+
Retailer 8
-
$456 AUD
£252 GBP
View
B+
Retailer 9
-
$609 AUD
$428 USD
View
B
Retailer 10
-
$844 AUD
$593 USD
View
B
Retailer 11
-
$893 AUD
$627 USD
View
B
Retailer 12
-
$923 AUD
$649 USD
View
Most Expensive
B
MOH London
LG517287920 · Oct 26
$1,229 AUD
£680 GBP
View
12 more retailers have this diamond
Prices start from $238 AUDSave up to $992 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
1.00ct Heart
$238 AUD