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Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG743593981

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

Certificate IGI LG743593981

Diamond specifications and retailer prices

From $406 AUD
As of November 4, 2026
Save $3,357 AUD (89%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $4,775 AUD at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG743593981 or 743593981. Listed at 31 retailers as of November 4, 2026, with a 826% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743593981
Dimensions5.88 × 5.88 × 3.94 mm
L/W Ratio1.00
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
5.88 mm5.88 mm1.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743593981
Side View
Table 61.0%Crown 37.9°Girdle: MediumPavilion 35.2°Culet: NoneDepth 67.0%

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: Nov 4
Current: $4,775 AUD|Low: $406 AUD|High: $4,775 AUD|Avg: $1,676 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 24
November 5, 2026
Retailer 20$406 AUD
Retailer 16$507 AUD
Retailer 19$587 AUD
Retailer 13$727 AUD
Retailer 18$747 AUD
Retailer 22$784 AUD
Retailer 17$898 AUD
Retailer 5$907 AUD
Retailer 2$982 AUD
Retailer 9$999 AUD
Retailer 15$1,179 AUD
Retailer 7$1,253 AUD
Retailer 4$1,307 AUD
Retailer 23$1,550 AUD
Retailer 21$1,790 AUD
Retailer 6$1,939 AUD
Retailer 8$2,021 AUD
Retailer 24$2,084 AUD
Retailer 3$2,154 AUD
Retailer 10$2,324 AUD
Retailer 11$2,385 AUD
Retailer 12$3,500 AUD
Retailer 14$3,763 AUD
Brilliant Earth$4,775 AUD

34 data points across 24 retailers

31 retailers$406 AUD to $3,763 AUD

A
Cheapest Retailer
-
$406 AUD
Retailer 2
-
$423 AUD
View
Price last confirmed 28 days ago
Retailer 3
-
$450 AUD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$507 AUD
View
Final sale: no returns
Retailer 5
-
$523 AUD
View
Price last confirmed 39 days ago
Retailer 6
-
$526 AUD
View
Price last confirmed 33 days ago
Retailer 7
-
$552 AUD
View
Price last confirmed 37 days ago
A
Retailer 8
-
$587 AUD
View
A
Retailer 9
-
$727 AUD
View
A
Retailer 10
-
$747 AUD
View
A
Retailer 11
-
$784 AUD
View
A
Retailer 12
-
$898 AUD
View
A
Retailer 13
-
$907 AUD
View
A
Retailer 14
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$982 AUD
View
A
Retailer 15
-
$999 AUD
View
A
Retailer 16
-
$1,179 AUD
View
A
Retailer 17
-
$1,253 AUD
View
A
Retailer 18
-
$1,307 AUD
View
B+
Retailer 19
-
$1,550 AUD
View
B+
Retailer 20
-
$1,790 AUD
View
Retailer 21
-
$1,865 AUD
View
Price last confirmed 26 days ago
B+
Retailer 22
-
$1,939 AUD
View
Retailer 23
-
$1,983 AUD
View
Price last confirmed 36 days ago
B+
Retailer 24
-
$2,021 AUD
View
B+
Retailer 25
-
$2,084 AUD
View
B+
Retailer 26
-
$2,154 AUD
View
B+
Retailer 27
-
$2,324 AUD
View
B+
Retailer 28
-
$2,385 AUD
View
Retailer 29
-
$3,500 AUD
View
Price last confirmed 8 days ago
B
Retailer 30
-
$3,763 AUD
View
Most Expensive
Brilliant Earth
17457052Y · Oct 21
$4,775 AUD
$3,350 USD
View
Price last confirmed 14 days ago
30 more retailers have this diamond
Prices start from $406 AUDSave up to $3,357 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
1.55ct Radiant
$406 AUD