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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754508772

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

Certificate IGI LG754508772

Diamond specifications and retailer prices

From $535 NZD
$301 USD
As of November 2, 2026
Save $4,690 NZD (90%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: $5,225 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 LG754508772 or 754508772. Listed at 33 retailers as of October 31, 2026, with prices from $535 to $5,225, a $4,690 spread on the same certified stone. Brilliant Earth lists it at $5,225. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508772
Dimensions5.90 × 5.90 × 3.69 mm
L/W Ratio1.00
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
5.90 mm5.90 mm1.57 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508772
Side View
Table 59.0%Crown 39.3°Girdle: MED-STKPavilion 31.5°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
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: Nov 2
Current: $5,225 NZD|Low: $535 NZD|High: $8,033 NZD|Avg: $2,119 NZD|-35.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 11
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Retailer 26
November 2, 2026
Retailer 9$535 NZD
Retailer 12$640 NZD
Retailer 19$659 NZD
Retailer 3$778 NZD
Retailer 4$942 NZD
Retailer 25$978 NZD
Retailer 10$1,031 NZD
Retailer 14$1,129 NZD
Retailer 21$1,189 NZD
Retailer 2$1,262 NZD
Retailer 13$1,311 NZD
Retailer 23$1,430 NZD
Retailer 11$1,505 NZD
Retailer 15$1,657 NZD
Retailer 24$1,706 NZD
Retailer 5$2,037 NZD
Retailer 18$2,502 NZD
Retailer 6$2,549 NZD
Retailer 16$2,638 NZD
Retailer 8$2,686 NZD
Retailer 17$2,811 NZD
Retailer 20$2,932 NZD
Retailer 22$3,012 NZD
Retailer 26$4,372 NZD
Retailer 7$4,745 NZD
Brilliant Earth$5,225 NZD

37 data points across 26 retailers

33 retailers$535 NZD to $5,225 NZD

A
Cheapest Retailer
-
$535 NZD
$301 USD
Retailer 2
-
$535 NZD
$301 USD
View
Price last confirmed 25 days ago
Retailer 3
-
$569 NZD
$320 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
$640 NZD
$360 USD
View
Final sale: no returns
Retailer 5
-
$659 NZD
$371 USD
View
Price last confirmed 36 days ago
Retailer 6
-
$663 NZD
$373 USD
View
Price last confirmed 30 days ago
Retailer 7
-
$697 NZD
$392 USD
View
Price last confirmed 34 days ago
Retailer 8
-
$778 NZD
£345 GBP
View
Price last confirmed 16 days ago
A
Retailer 9
-
$942 NZD
$530 USD
View
A
Retailer 10
-
$978 NZD
HK$4,300 HKD
View
A
Retailer 11
-
$1,031 NZD
$580 USD
View
A
Retailer 12
-
$1,129 NZD
$635 USD
View
A
Retailer 13
-
$1,189 NZD
€637 EUR
View
A
Retailer 14
-
$1,262 NZD
ZAR 11,472 ZAR
View
A
Retailer 15
-
$1,311 NZD
£581 GBP
View
A
Retailer 16
-
$1,430 NZD
A$1,238 AUD
View
A
Retailer 17
-
$1,505 NZD
$847 USD
View
A
Retailer 18
-
$1,657 NZD
$933 USD
View
A
Retailer 19
-
$1,706 NZD
A$1,477 AUD
View
B+
Retailer 20
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$2,037 NZD
$1,146 USD
View
Retailer 21
-
$2,353 NZD
$1,324 USD
View
Price last confirmed 23 days ago
B+
Retailer 22
-
$2,353 NZD
$1,324 USD
View
Retailer 23
-
$2,502 NZD
$1,408 USD
View
Price last confirmed 32 days ago
B+
Retailer 24
-
$2,549 NZD
$1,434 USD
View
B+
Retailer 25
-
$2,638 NZD
$1,484 USD
View
B+
Retailer 26
-
$2,686 NZD
$1,511 USD
View
B+
Retailer 27
-
$2,811 NZD
SGD 2,137 SGD
View
B+
Retailer 28
-
$2,932 NZD
£1,299 GBP
View
B+
Retailer 29
-
$3,012 NZD
A$2,607 AUD
View
B
Retailer 30
-
$4,372 NZD
$2,460 USD
View
B
Retailer 31
-
$4,745 NZD
$2,670 USD
View
B
Retailer 32
-
$4,848 NZD
$2,728 USD
View
Most Expensive
B
Brilliant Earth
18669069Y · Oct 31
$5,225 NZD
$2,940 USD
View
32 more retailers have this diamond
Prices start from $535 NZDSave up to $4,690 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
$535 NZD