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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 $513 NZD
$289 USD
As of October 30, 2026
Save $5,165 NZD (91%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $5,678 NZD 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 $513 to $5,678, a $5,165 spread on the same certified stone. Diamond Quarter lists it at $5,678. 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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,810 NZD|Low: $513 NZD|High: $6,015 NZD|Avg: $2,119 NZD|-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$513 NZD
Retailer 21$610 NZD
Retailer 19$905 NZD
Retailer 11$931 NZD
Retailer 4$990 NZD
Retailer 9$1,102 NZD
Retailer 15$1,140 NZD
Retailer 18$1,205 NZD
Retailer 12$1,251 NZD
Retailer 5$1,499 NZD
Retailer 10$1,581 NZD
Retailer 2$1,952 NZD
Retailer 7$2,443 NZD
Retailer 13$2,542 NZD
Retailer 6$2,614 NZD
Retailer 14$2,714 NZD
Retailer 1$2,810 NZD
Retailer 16$2,981 NZD
Retailer 8$4,542 NZD
Retailer 20$4,560 NZD
Retailer 17$5,216 NZD

38 data points across 21 retailers

31 retailers$513 NZD to $5,678 NZD

A
Cheapest Retailer
-
$513 NZD
$289 USD
Retailer 2
-
$513 NZD
$289 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$534 NZD
$301 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
$610 NZD
$344 USD
View
Final sale: no returns
Retailer 5
-
$619 NZD
$349 USD
View
Price last confirmed 35 days ago
Retailer 6
-
$635 NZD
$358 USD
View
Price last confirmed 29 days ago
Retailer 7
-
$653 NZD
$368 USD
View
Price last confirmed 33 days ago
A
Retailer 8
-
$905 NZD
$510 USD
View
A
Retailer 9
-
$931 NZD
HK$4,100 HKD
View
A
Retailer 10
-
$990 NZD
$558 USD
View
A
Retailer 11
-
$1,102 NZD
$621 USD
View
A
Retailer 12
-
$1,140 NZD
€612 EUR
View
A
Retailer 13
-
$1,205 NZD
ZAR 10,972 ZAR
View
A
Retailer 14
-
$1,251 NZD
£555 GBP
View
A
Retailer 15
-
$1,499 NZD
$845 USD
View
A
Retailer 16
-
$1,581 NZD
$891 USD
View
B+
Retailer 17
-
$1,952 NZD
$1,100 USD
View
Retailer 18
-
$2,255 NZD
$1,271 USD
View
Price last confirmed 22 days ago
B+
Retailer 19
-
$2,255 NZD
$1,271 USD
View
Retailer 20
-
$2,349 NZD
$1,324 USD
View
Price last confirmed 32 days ago
B+
Retailer 21
-
$2,443 NZD
$1,377 USD
View
B+
Retailer 22
-
$2,542 NZD
$1,433 USD
View
B+
Retailer 23
-
$2,614 NZD
$1,473 USD
View
B+
Retailer 24
-
$2,714 NZD
SGD 2,067 SGD
View
B+
Retailer 25
-
$2,810 NZD
£1,247 GBP
View
B+
Retailer 26
-
$2,981 NZD
A$2,585 AUD
View
B
Retailer 27
-
$4,400 NZD
$2,480 USD
View
B
Retailer 28
-
$4,542 NZD
$2,560 USD
View
B
Retailer 29
-
$4,560 NZD
$2,570 USD
View
B
Retailer 30
-
$5,216 NZD
$2,940 USD
View
Most Expensive
B
Diamond Quarter
1.57IFDLG25C158N · Oct 31
$5,678 NZD
£2,520 GBP
View
30 more retailers have this diamond
Prices start from $513 NZDSave up to $5,165 NZD

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
$513 NZD