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Heart|Lab Grown|IGI

1.51ct E SI1 Heart Lab Grown Diamond

EX • E/SI1

Diamond specifications and retailer prices

From $525 AUD
£290 GBP
As of October 29, 2026
1 retailer carries this diamond
Only listing: $525 AUD at Moon Ocean
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Moon Ocean

About this 1.51ct lab-grown heart diamond

This 1.51ct 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. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions6.78 × 7.92 × 4.54 mm
L/W Ratio1.17
Top View
6.78 mm7.92 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI
Side View
Table 60.5%CrownGirdle: TVTPavilionCuletDepth 57.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: $525 AUD|Low: $297 AUD|High: $1,310 AUD|Avg: $610 AUD|+0.5%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
October 29, 2026
Retailer 3$297 AUD
Retailer 4$346 AUD
Moon Ocean$525 AUD
Retailer 2$1,310 AUD

31 data points across 4 retailers

1 retailer

B+
Moon Ocean
NVL-3A9B3D2D2-247 · Oct 29
$525 AUD
£290 GBP
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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.

B+
1.51ct Heart
$525 AUD