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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG700512156

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

Certificate IGI LG700512156

Diamond specifications and retailer prices

From $473 AUD
$332 USD
As of October 30, 2026
Save $3,193 AUD (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,666 AUD at Rare Carat · As of October 28, 2026
View at Rare Carat

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 LG700512156 or 700512156. Listed at 24 retailers as of October 28, 2026, with prices from $473 to $3,666, a $3,193 spread on the same certified stone. Rare Carat lists it at $3,666. 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 angle39.2°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700512156
Dimensions8.59 × 5.74 × 3.70 mm
L/W Ratio1.50
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
8.59 mm5.74 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700512156
Side View
Table 63.0%Crown 39.2°Girdle: MediumPavilion 33°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
A+
Exceptional
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: $3,666 AUD|Low: $454 AUD|High: $3,680 AUD|Avg: $1,471 AUD|-0.4%
Rare Carat
Retailer 2
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Retailer 24
November 1, 2026
Retailer 3$473 AUD
Retailer 23$548 AUD
Retailer 22$564 AUD
Retailer 24$587 AUD
Retailer 14$674 AUD
Retailer 19$740 AUD
Retailer 7$826 AUD
Retailer 18$952 AUD
Retailer 11$955 AUD
Retailer 21$1,007 AUD
Retailer 13$1,050 AUD
Retailer 12$1,328 AUD
Retailer 20$1,367 AUD
Retailer 8$1,555 AUD
Retailer 5$1,720 AUD
Retailer 4$1,885 AUD
Retailer 15$1,947 AUD
Retailer 17$1,960 AUD
Retailer 16$1,962 AUD
Retailer 10$2,215 AUD
Retailer 9$2,299 AUD
Retailer 2$2,349 AUD
Retailer 6$2,433 AUD
Rare Carat$3,666 AUD

32 data points across 24 retailers

24 retailers$473 AUD to $3,666 AUD

A+
Cheapest Retailer
-
$473 AUD
$332 USD
A
Retailer 2
-
$548 AUD
$385 USD
View
A
Retailer 3
-
$564 AUD
$396 USD
View
Final sale: no returns
A
Retailer 4
-
$587 AUD
$412 USD
View
A
Retailer 5
-
$674 AUD
HK$3,700 HKD
View
A
Retailer 6
-
$740 AUD
$520 USD
View
A
Retailer 7
-
$826 AUD
$580 USD
View
A
Retailer 8
-
$952 AUD
€637 EUR
View
A
Retailer 9
-
$955 AUD
$671 USD
View
A
Retailer 10
-
$1,007 AUD
ZAR 11,431 ZAR
View
A
Retailer 11
-
$1,050 AUD
£581 GBP
View
A
Retailer 12
-
$1,328 AUD
$933 USD
View
A
Retailer 13
-
$1,367 AUD
View
A
Retailer 14
-
$1,555 AUD
$1,092 USD
View
B+
Retailer 15
-
$1,720 AUD
$1,208 USD
View
B+
Retailer 16
-
$1,885 AUD
$1,324 USD
View
B+
Retailer 17
-
$1,947 AUD
$1,368 USD
View
B+
Retailer 18
-
$1,960 AUD
$1,377 USD
View
B+
Retailer 19
-
$1,962 AUD
SGD 1,862 SGD
View
B+
Retailer 20
-
$2,215 AUD
$1,556 USD
View
B+
Retailer 21
-
$2,299 AUD
$1,615 USD
View
B+
Retailer 22
-
$2,349 AUD
£1,299 GBP
View
Retailer 23
-
$2,433 AUD
View
Price last confirmed 24 days ago
Most Expensive
B
Rare Carat
2186-12-614 · Oct 28
$3,666 AUD
$2,575 USD
View
23 more retailers have this diamond
Prices start from $473 AUDSave up to $3,193 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
$473 AUD