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Radiant|Lab Grown|IGI

1.51ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG662463684

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG662463684

Diamond specifications and retailer prices

From $945 AUD
£511 GBP
As of November 5, 2026
1 retailer carries this diamond
Only listing: $945 AUD at Diamond Quarter
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 Diamond Quarter

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant 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 LG662463684 or 662463684. Listed at a single retailer as of November 5, 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
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662463684
Dimensions8.22 × 5.65 × 3.83 mm
L/W Ratio1.45
Top View
8.22 mm5.65 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662463684
Side View
Table 62.0%Crown 42.3°Girdle: MediumPavilion 36.1°Culet: NoneDepth 67.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $720 AUD|Low: $424 AUD|High: $1,404 AUD|Avg: $891 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
March 23, 2026
Retailer 5$424 AUD
Retailer 4$450 AUD
Retailer 1$720 AUD
Retailer 3$764 AUD
Retailer 6$816 AUD
Retailer 2$834 AUD
Retailer 7$1,404 AUD

29 data points across 7 retailers

1 retailer

B
Diamond Quarter
1.51SI1ELG84D716N · Nov 5
$945 AUD
£511 GBP
View

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 Radiant
$945 AUD