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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG625472025

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

Certificate IGI LG625472025

Diamond specifications and retailer prices

From $411 AUD
$289 USD
As of October 30, 2026
Save $4,144 AUD (91%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $4,555 AUD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

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 LG625472025 or 625472025. Listed at 31 retailers as of October 30, 2026, with prices from $411 to $4,555, a $4,144 spread on the same certified stone. Diamond Quarter lists it at $4,555. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625472025
Dimensions8.57 × 5.78 × 3.76 mm
L/W Ratio1.48
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
8.57 mm5.78 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625472025
Side View
Table 65.0%Crown 32.8°Girdle: MediumPavilion 33.9°Culet: NoneDepth 65.1%

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: $2,255 AUD|Low: $411 AUD|High: $4,826 AUD|Avg: $1,700 AUD|-5.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 3$411 AUD
Retailer 21$490 AUD
Retailer 19$726 AUD
Retailer 11$747 AUD
Retailer 4$794 AUD
Retailer 9$884 AUD
Retailer 15$915 AUD
Retailer 18$967 AUD
Retailer 12$1,004 AUD
Retailer 5$1,203 AUD
Retailer 10$1,269 AUD
Retailer 2$1,566 AUD
Retailer 7$1,960 AUD
Retailer 13$2,040 AUD
Retailer 6$2,097 AUD
Retailer 14$2,178 AUD
Retailer 1$2,255 AUD
Retailer 16$2,392 AUD
Retailer 8$3,644 AUD
Retailer 20$3,659 AUD
Retailer 17$4,185 AUD

38 data points across 21 retailers

31 retailers$411 AUD to $4,555 AUD

A
Cheapest Retailer
-
$411 AUD
$289 USD
Retailer 2
-
$411 AUD
$289 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$429 AUD
$301 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
$490 AUD
$344 USD
View
Final sale: no returns
Retailer 5
-
$497 AUD
$349 USD
View
Price last confirmed 35 days ago
Retailer 6
-
$510 AUD
$358 USD
View
Price last confirmed 29 days ago
Retailer 7
-
$524 AUD
$368 USD
View
Price last confirmed 33 days ago
A
Retailer 8
-
$726 AUD
$510 USD
View
A
Retailer 9
-
$747 AUD
HK$4,100 HKD
View
A
Retailer 10
-
$794 AUD
$558 USD
View
A
Retailer 11
-
$884 AUD
$621 USD
View
A
Retailer 12
-
$915 AUD
€612 EUR
View
A
Retailer 13
-
$967 AUD
ZAR 10,972 ZAR
View
A
Retailer 14
-
$1,004 AUD
£555 GBP
View
A
Retailer 15
-
$1,203 AUD
$845 USD
View
A
Retailer 16
-
$1,269 AUD
$891 USD
View
B+
Retailer 17
-
$1,566 AUD
$1,100 USD
View
Retailer 18
-
$1,809 AUD
$1,271 USD
View
Price last confirmed 22 days ago
B+
Retailer 19
-
$1,809 AUD
$1,271 USD
View
Retailer 20
-
$1,885 AUD
$1,324 USD
View
Price last confirmed 31 days ago
B+
Retailer 21
-
$1,960 AUD
$1,377 USD
View
B+
Retailer 22
-
$2,040 AUD
$1,433 USD
View
B+
Retailer 23
-
$2,097 AUD
$1,473 USD
View
B+
Retailer 24
-
$2,178 AUD
SGD 2,067 SGD
View
B+
Retailer 25
-
$2,255 AUD
£1,247 GBP
View
B+
Retailer 26
-
$2,392 AUD
View
B
Retailer 27
-
$3,531 AUD
$2,480 USD
View
B
Retailer 28
-
$3,644 AUD
$2,560 USD
View
B
Retailer 29
-
$3,659 AUD
$2,570 USD
View
B
Retailer 30
-
$4,185 AUD
$2,940 USD
View
Most Expensive
B
Diamond Quarter
1.57IFDLG25C158N · Oct 31
$4,555 AUD
£2,520 GBP
View
30 more retailers have this diamond
Prices start from $411 AUDSave up to $4,144 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
$411 AUD