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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754508772

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

Certificate IGI LG754508772

Diamond specifications and retailer prices

From $429 AUD
$301 USD
As of October 30, 2026
Save $3,757 AUD (90%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: $4,185 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.57ct lab-grown radiant diamond

This 1.57ct 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 LG754508772 or 754508772. Listed at 33 retailers as of October 30, 2026, with prices from $429 to $4,185, a $3,757 spread on the same certified stone. Brilliant Earth lists it at $4,185. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508772
Dimensions5.90 × 5.90 × 3.69 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
5.90 mm5.90 mm1.57 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508772
Side View
Table 59.0%Crown 39.3°Girdle: MED-STKPavilion 31.5°Culet: NoneDepth 62.5%

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: $4,185 AUD|Low: $429 AUD|High: $6,435 AUD|Avg: $1,702 AUD|-35.0%
Brilliant Earth
Retailer 2
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Retailer 26
November 1, 2026
Retailer 9$429 AUD
Retailer 12$512 AUD
Retailer 19$528 AUD
Retailer 3$623 AUD
Retailer 4$755 AUD
Retailer 25$784 AUD
Retailer 10$826 AUD
Retailer 14$904 AUD
Retailer 20$952 AUD
Retailer 24$1,007 AUD
Retailer 13$1,050 AUD
Retailer 22$1,146 AUD
Retailer 11$1,206 AUD
Retailer 15$1,328 AUD
Retailer 23$1,367 AUD
Retailer 5$1,631 AUD
Retailer 18$2,004 AUD
Retailer 6$2,041 AUD
Retailer 16$2,113 AUD
Retailer 8$2,151 AUD
Retailer 17$2,251 AUD
Retailer 2$2,349 AUD
Retailer 21$2,412 AUD
Retailer 26$3,502 AUD
Retailer 7$3,801 AUD
Brilliant Earth$4,185 AUD

37 data points across 26 retailers

33 retailers$429 AUD to $4,185 AUD

A
Cheapest Retailer
-
$429 AUD
$301 USD
Retailer 2
-
$429 AUD
$301 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$456 AUD
$320 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
$512 AUD
$360 USD
View
Final sale: no returns
Retailer 5
-
$528 AUD
$371 USD
View
Price last confirmed 35 days ago
Retailer 6
-
$531 AUD
$373 USD
View
Price last confirmed 29 days ago
Retailer 7
-
$558 AUD
$392 USD
View
Price last confirmed 34 days ago
Retailer 8
-
$623 AUD
£345 GBP
View
Price last confirmed 15 days ago
A
Retailer 9
-
$755 AUD
$530 USD
View
A
Retailer 10
-
$784 AUD
HK$4,300 HKD
View
A
Retailer 11
-
$826 AUD
$580 USD
View
A
Retailer 12
-
$904 AUD
$635 USD
View
A
Retailer 13
-
$952 AUD
€637 EUR
View
A
Retailer 14
-
$1,007 AUD
ZAR 11,431 ZAR
View
A
Retailer 15
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$1,050 AUD
£581 GBP
View
A
Retailer 16
-
$1,146 AUD
View
A
Retailer 17
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$1,206 AUD
$847 USD
View
A
Retailer 18
-
$1,328 AUD
$933 USD
View
A
Retailer 19
-
$1,367 AUD
View
B+
Retailer 20
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$1,631 AUD
$1,146 USD
View
Retailer 21
-
$1,885 AUD
$1,324 USD
View
Price last confirmed 22 days ago
B+
Retailer 22
-
$1,885 AUD
$1,324 USD
View
Retailer 23
-
$2,004 AUD
$1,408 USD
View
Price last confirmed 32 days ago
B+
Retailer 24
-
$2,041 AUD
$1,434 USD
View
B+
Retailer 25
-
$2,113 AUD
$1,484 USD
View
B+
Retailer 26
-
$2,151 AUD
$1,511 USD
View
B+
Retailer 27
-
$2,251 AUD
SGD 2,137 SGD
View
B+
Retailer 28
-
$2,349 AUD
£1,299 GBP
View
B+
Retailer 29
-
$2,412 AUD
View
B
Retailer 30
-
$3,502 AUD
$2,460 USD
View
B
Retailer 31
-
$3,801 AUD
$2,670 USD
View
B
Retailer 32
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$3,884 AUD
$2,728 USD
View
Most Expensive
B
Brilliant Earth
18669069Y · Oct 31
$4,185 AUD
$2,940 USD
View
32 more retailers have this diamond
Prices start from $429 AUDSave up to $3,757 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
1.57ct Radiant
$429 AUD