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Radiant|Lab Grown|IGI

1.54ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG687580984

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

Certificate IGI LG687580984

Diamond specifications and retailer prices

From $404 AUD
$284 USD
As of October 30, 2026
Save $4,023 AUD (91%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $4,427 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.54ct lab-grown radiant diamond

This 1.54ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG687580984 or 687580984. Listed at 27 retailers as of October 29, 2026, with prices from $404 to $4,427, a $4,023 spread on the same certified stone. Brilliant Earth lists it at $4,427. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687580984
Dimensions8.13 × 5.74 × 3.82 mm
L/W Ratio1.42
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
8.13 mm5.74 mm1.54 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687580984
Side View
Table 65.0%Crown 41.1°Girdle: Slightly ThickPavilion 33.3°Culet: NoneDepth 66.6%

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: $4,427 AUD|Low: $387 AUD|High: $4,811 AUD|Avg: $1,337 AUD|-8.0%
Brilliant Earth
Retailer 2
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Retailer 5
Retailer 6
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Retailer 21
October 30, 2026
Retailer 7$404 AUD
Retailer 5$450 AUD
Retailer 11$468 AUD
Retailer 9$501 AUD
Retailer 12$501 AUD
Retailer 21$518 AUD
Retailer 18$726 AUD
Retailer 20$786 AUD
Retailer 2$824 AUD
Retailer 17$860 AUD
Retailer 13$884 AUD
Retailer 14$981 AUD
Retailer 16$1,165 AUD
Retailer 3$1,282 AUD
Retailer 10$1,610 AUD
Retailer 4$1,926 AUD
Retailer 15$2,017 AUD
Retailer 6$2,079 AUD
Retailer 8$2,086 AUD
Retailer 19$3,231 AUD
Brilliant Earth$4,427 AUD

38 data points across 21 retailers

27 retailers$404 AUD to $4,427 AUD

A
Cheapest Retailer
-
$404 AUD
$284 USD
A
Retailer 2
-
$450 AUD
$316 USD
View
Final sale: no returns
A
Retailer 3
-
$468 AUD
$329 USD
View
A
Retailer 4
-
$501 AUD
$352 USD
View
A
Retailer 5
-
$501 AUD
$352 USD
View
Retailer 6
-
$518 AUD
£287 GBP
View
Price last confirmed 13 days ago
A
Retailer 7
-
$726 AUD
$510 USD
View
A
Retailer 8
-
$786 AUD
€526 EUR
View
A
Retailer 9
-
$824 AUD
$579 USD
View
A
Retailer 10
-
$860 AUD
ZAR 9,766 ZAR
View
A
Retailer 11
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$884 AUD
£489 GBP
View
A
Retailer 12
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$981 AUD
$689 USD
View
A
Retailer 13
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$1,061 AUD
$745 USD
View
A
Retailer 14
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$1,165 AUD
View
A
Retailer 15
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$1,282 AUD
$901 USD
View
A
Retailer 16
-
$1,489 AUD
$1,046 USD
View
B+
Retailer 17
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$1,610 AUD
$1,131 USD
View
B+
Retailer 18
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$1,682 AUD
$1,181 USD
View
B+
Retailer 19
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$1,926 AUD
$1,353 USD
View
B+
Retailer 20
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$1,952 AUD
£1,080 GBP
View
B+
Retailer 21
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$2,017 AUD
£1,116 GBP
View
B+
Retailer 22
-
$2,079 AUD
$1,461 USD
View
Retailer 23
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$2,086 AUD
View
Price last confirmed 22 days ago
B+
Retailer 24
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$2,090 AUD
$1,468 USD
View
B+
Retailer 25
-
$2,318 AUD
£1,282 GBP
View
Retailer 26
-
$3,231 AUD
$2,270 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
17795729A · Oct 29
$4,427 AUD
$3,110 USD
View
26 more retailers have this diamond
Prices start from $404 AUDSave up to $4,023 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
1.54ct Radiant
$404 AUD