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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG613379389

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

Certificate IGI LG613379389

Diamond specifications and retailer prices

From $454 AUD
$319 USD
As of October 30, 2026
Save $3,745 AUD (89%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $4,200 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 LG613379389 or 613379389. Listed at 29 retailers as of October 30, 2026, with prices from $454 to $4,200, a $3,745 spread on the same certified stone. Brilliant Earth lists it at $4,200. 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 angle35°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG613379389
Dimensions8.14 × 5.83 × 3.95 mm
L/W Ratio1.40
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
8.14 mm5.83 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG613379389
Side View
Table 65.0%Crown 35°Girdle: MediumPavilion 34.6°Culet: NoneDepth 67.8%

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: $4,200 AUD|Low: $454 AUD|High: $4,997 AUD|Avg: $1,542 AUD|-16.0%
Brilliant Earth
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$454 AUD
Retailer 16$540 AUD
Retailer 10$656 AUD
Retailer 4$794 AUD
Retailer 20$797 AUD
Retailer 15$915 AUD
Retailer 8$932 AUD
Retailer 19$967 AUD
Retailer 13$1,004 AUD
Retailer 9$1,269 AUD
Retailer 18$1,311 AUD
Retailer 5$1,550 AUD
Retailer 21$1,650 AUD
Retailer 11$1,873 AUD
Retailer 14$1,873 AUD
Retailer 12$1,888 AUD
Retailer 7$2,164 AUD
Retailer 6$2,239 AUD
Retailer 2$2,255 AUD
Retailer 17$2,392 AUD
Brilliant Earth$4,200 AUD

34 data points across 21 retailers

29 retailers$454 AUD to $4,200 AUD

A
Cheapest Retailer
-
$454 AUD
$319 USD
Retailer 2
-
$454 AUD
$319 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$473 AUD
$332 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
$540 AUD
$379 USD
View
Final sale: no returns
Retailer 5
-
$548 AUD
$385 USD
View
Price last confirmed 34 days ago
Retailer 6
-
$562 AUD
$395 USD
View
Price last confirmed 29 days ago
Retailer 7
-
$578 AUD
$406 USD
View
Price last confirmed 33 days ago
A
Retailer 8
-
$656 AUD
HK$3,600 HKD
View
A
Retailer 9
-
$794 AUD
$558 USD
View
A
Retailer 10
-
$797 AUD
$560 USD
View
A
Retailer 11
-
$915 AUD
€612 EUR
View
A
Retailer 12
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$932 AUD
$655 USD
View
A
Retailer 13
-
$967 AUD
ZAR 10,972 ZAR
View
A
Retailer 14
-
$1,004 AUD
£555 GBP
View
A
Retailer 15
-
$1,269 AUD
$891 USD
View
A
Retailer 16
-
$1,311 AUD
View
B+
Retailer 17
-
$1,550 AUD
$1,089 USD
View
B+
Retailer 18
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$1,650 AUD
$1,159 USD
View
Retailer 19
-
$1,809 AUD
$1,271 USD
View
Price last confirmed 21 days ago
B+
Retailer 20
-
$1,809 AUD
$1,271 USD
View
B+
Retailer 21
-
$1,873 AUD
$1,316 USD
View
B+
Retailer 22
-
$1,873 AUD
$1,316 USD
View
Retailer 23
-
$1,885 AUD
$1,324 USD
View
Price last confirmed 31 days ago
B+
Retailer 24
-
$1,888 AUD
SGD 1,792 SGD
View
B+
Retailer 25
-
$2,164 AUD
$1,520 USD
View
B+
Retailer 26
-
$2,239 AUD
$1,573 USD
View
B+
Retailer 27
-
$2,255 AUD
£1,247 GBP
View
B+
Retailer 28
-
$2,392 AUD
View
Most Expensive
B
Brilliant Earth
8881666A · Oct 31
$4,200 AUD
$2,950 USD
View
28 more retailers have this diamond
Prices start from $454 AUDSave up to $3,745 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
$454 AUD