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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG768623613

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

Certificate IGI LG768623613

Diamond specifications and retailer prices

From $589 NZD
$332 USD
As of October 30, 2026
Save $3,997 NZD (87%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,587 NZD 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 LG768623613 or 768623613. Listed at 25 retailers as of October 28, 2026, with prices from $589 to $4,587, a $3,997 spread on the same certified stone. Rare Carat lists it at $4,587. 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 angle38.5°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768623613
Dimensions8.58 × 5.77 × 3.75 mm
L/W Ratio1.49
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
8.58 mm5.77 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768623613
Side View
Table 62.0%Crown 38.5°Girdle: MediumPavilion 33.5°Culet: NoneDepth 65.0%

Caratlytics Score

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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: $4,587 NZD|Low: $589 NZD|High: $4,622 NZD|Avg: $1,775 NZD|-0.8%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 11
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Retailer 24
November 1, 2026
Retailer 6$589 NZD
Retailer 9$658 NZD
Retailer 23$683 NZD
Retailer 3$731 NZD
Retailer 10$731 NZD
Retailer 13$773 NZD
Retailer 4$795 NZD
Retailer 22$1,002 NZD
Retailer 19$1,181 NZD
Retailer 11$1,182 NZD
Retailer 8$1,191 NZD
Retailer 21$1,256 NZD
Retailer 18$1,308 NZD
Retailer 20$1,703 NZD
Retailer 5$1,938 NZD
Retailer 24$2,143 NZD
Retailer 15$2,332 NZD
Retailer 7$2,349 NZD
Retailer 17$2,427 NZD
Retailer 16$2,761 NZD
Retailer 12$2,839 NZD
Retailer 14$2,866 NZD
Retailer 2$2,927 NZD
Rare Carat$4,587 NZD

35 data points across 24 retailers

25 retailers$589 NZD to $4,587 NZD

A+
Cheapest Retailer
-
$589 NZD
$332 USD
A
Retailer 2
-
$658 NZD
$371 USD
View
Final sale: no returns
A
Retailer 3
-
$683 NZD
$385 USD
View
Retailer 4
-
$731 NZD
$412 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$731 NZD
$412 USD
View
A
Retailer 6
-
$773 NZD
£343 GBP
View
A
Retailer 7
-
$795 NZD
HK$3,500 HKD
View
A
Retailer 8
-
$1,002 NZD
$565 USD
View
A
Retailer 9
-
$1,181 NZD
€634 EUR
View
A
Retailer 10
-
$1,182 NZD
$666 USD
View
A
Retailer 11
-
$1,191 NZD
$671 USD
View
A
Retailer 12
-
$1,256 NZD
ZAR 11,432 ZAR
View
A
Retailer 13
-
$1,308 NZD
£581 GBP
View
A
Retailer 14
-
$1,703 NZD
A$1,477 AUD
View
B+
Retailer 15
-
$1,938 NZD
$1,092 USD
View
B+
Retailer 16
-
$2,143 NZD
$1,208 USD
View
B+
Retailer 17
-
$2,332 NZD
SGD 1,776 SGD
View
B+
Retailer 18
-
$2,349 NZD
$1,324 USD
View
B+
Retailer 19
-
$2,427 NZD
$1,368 USD
View
B+
Retailer 20
-
$2,566 NZD
$1,446 USD
View
B+
Retailer 21
-
$2,761 NZD
$1,556 USD
View
B+
Retailer 22
-
$2,839 NZD
£1,260 GBP
View
B+
Retailer 23
-
$2,866 NZD
$1,615 USD
View
B+
Retailer 24
-
$2,927 NZD
£1,299 GBP
View
Most Expensive
B
Rare Carat
A5-163A · Oct 28
$4,587 NZD
$2,585 USD
View
24 more retailers have this diamond
Prices start from $589 NZDSave up to $3,997 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
$589 NZD