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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG729589868

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

Certificate IGI LG729589868

Diamond specifications and retailer prices

From $534 NZD
$301 USD
As of October 30, 2026
Save $4,682 NZD (90%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $5,216 NZD 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 LG729589868 or 729589868. Listed at 27 retailers as of October 30, 2026, with prices from $534 to $5,216, a $4,682 spread on the same certified stone. Brilliant Earth lists it at $5,216. 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°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729589868
Dimensions8.70 × 5.86 × 3.63 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
8.70 mm5.86 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729589868
Side View
Table 62.0%Crown 39°Girdle: MED-STKPavilion 33.3°Culet: NoneDepth 61.9%

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: $5,216 NZD|Low: $513 NZD|High: $6,015 NZD|Avg: $2,073 NZD|-13.3%
Brilliant Earth
Retailer 2
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Retailer 26
November 1, 2026
Retailer 4$534 NZD
Retailer 25$619 NZD
Retailer 6$639 NZD
Retailer 3$662 NZD
Retailer 21$798 NZD
Retailer 24$977 NZD
Retailer 9$1,029 NZD
Retailer 15$1,127 NZD
Retailer 20$1,187 NZD
Retailer 23$1,255 NZD
Retailer 13$1,308 NZD
Retailer 16$1,428 NZD
Retailer 10$1,503 NZD
Retailer 17$1,655 NZD
Retailer 22$1,703 NZD
Retailer 7$2,033 NZD
Retailer 5$2,349 NZD
Retailer 12$2,544 NZD
Retailer 18$2,634 NZD
Retailer 11$2,681 NZD
Retailer 19$2,806 NZD
Retailer 2$2,927 NZD
Retailer 8$3,045 NZD
Retailer 26$4,365 NZD
Retailer 14$4,737 NZD
Brilliant Earth$5,216 NZD

35 data points across 26 retailers

27 retailers$534 NZD to $5,216 NZD

A
Cheapest Retailer
-
$534 NZD
$301 USD
A
Retailer 2
-
$619 NZD
$349 USD
View
A
Retailer 3
-
$639 NZD
$360 USD
View
Final sale: no returns
A
Retailer 4
-
$662 NZD
$373 USD
View
A
Retailer 5
-
$798 NZD
$450 USD
View
A
Retailer 6
-
$977 NZD
HK$4,300 HKD
View
A
Retailer 7
-
$1,029 NZD
$580 USD
View
A
Retailer 8
-
$1,127 NZD
$635 USD
View
A
Retailer 9
-
$1,187 NZD
€637 EUR
View
A
Retailer 10
-
$1,255 NZD
ZAR 11,431 ZAR
View
A
Retailer 11
-
$1,308 NZD
£581 GBP
View
A
Retailer 12
-
$1,428 NZD
A$1,238 AUD
View
A
Retailer 13
-
$1,503 NZD
$847 USD
View
A
Retailer 14
-
$1,655 NZD
$933 USD
View
A
Retailer 15
-
$1,703 NZD
A$1,477 AUD
View
B+
Retailer 16
-
$2,033 NZD
$1,146 USD
View
B+
Retailer 17
-
$2,349 NZD
$1,324 USD
View
B+
Retailer 18
-
$2,544 NZD
$1,434 USD
View
B+
Retailer 19
-
$2,634 NZD
$1,484 USD
View
B+
Retailer 20
-
$2,681 NZD
$1,511 USD
View
B+
Retailer 21
-
$2,806 NZD
SGD 2,137 SGD
View
B+
Retailer 22
-
$2,927 NZD
£1,299 GBP
View
Retailer 23
-
$3,045 NZD
A$2,640 AUD
View
Price last confirmed 24 days ago
B
Retailer 24
-
$4,365 NZD
$2,460 USD
View
Retailer 25
-
$4,401 NZD
$2,480 USD
View
Price last confirmed 104 days ago
B
Retailer 26
-
$4,737 NZD
$2,670 USD
View
Most Expensive
B
Brilliant Earth
16223276Y · Oct 31
$5,216 NZD
$2,940 USD
View
26 more retailers have this diamond
Prices start from $534 NZDSave up to $4,682 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
$534 NZD