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Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG744515287

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

Certificate IGI LG744515287

Diamond specifications and retailer prices

From $506 NZD
As of November 4, 2026
Save $3,983 NZD (89%) vs most expensive(unlock to see where)
32 retailers carry this diamond
Most expensive: $5,943 NZD at Brilliant Earth · As of October 17, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct 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 LG744515287 or 744515287. Listed at 32 retailers as of November 4, 2026, with a 788% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744515287
Dimensions5.70 × 5.70 × 3.76 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
5.70 mm5.70 mm1.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744515287
Side View
Table 63.0%Crown 42.3°Girdle: Slightly ThickPavilion 33.9°Culet: NoneDepth 66.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $5,943 NZD|Low: $506 NZD|High: $5,943 NZD|Avg: $2,137 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
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Retailer 17
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Retailer 19
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Retailer 23
November 5, 2026
Retailer 23$506 NZD
Retailer 13$603 NZD
Retailer 22$731 NZD
Retailer 20$905 NZD
Retailer 21$930 NZD
Retailer 4$976 NZD
Retailer 9$1,128 NZD
Retailer 18$1,222 NZD
Retailer 14$1,244 NZD
Retailer 2$1,464 NZD
Retailer 11$1,559 NZD
Retailer 8$1,627 NZD
Retailer 5$1,928 NZD
Retailer 3$2,228 NZD
Retailer 10$2,413 NZD
Retailer 12$2,516 NZD
Retailer 6$2,594 NZD
Retailer 7$2,681 NZD
Retailer 19$2,767 NZD
Retailer 15$2,968 NZD
Retailer 16$4,355 NZD
Retailer 17$4,488 NZD
Brilliant Earth$5,943 NZD

33 data points across 23 retailers

32 retailers$506 NZD to $4,488 NZD

A
Cheapest Retailer
-
$506 NZD
Retailer 2
-
$527 NZD
View
Price last confirmed 28 days ago
Retailer 3
-
$561 NZD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$603 NZD
View
Final sale: no returns
Retailer 5
-
$651 NZD
View
Price last confirmed 39 days ago
Retailer 6
-
$655 NZD
View
Price last confirmed 33 days ago
Retailer 7
-
$687 NZD
View
Price last confirmed 37 days ago
A
Retailer 8
-
$731 NZD
View
A
Retailer 9
-
$905 NZD
View
A
Retailer 10
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$930 NZD
View
A
Retailer 11
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$976 NZD
View
A
Retailer 12
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$1,118 NZD
View
A
Retailer 13
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$1,128 NZD
View
A
Retailer 14
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$1,222 NZD
View
A
Retailer 15
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$1,244 NZD
View
Retailer 16
-
$1,276 NZD
View
Price last confirmed 21 days ago
A
Retailer 17
-
$1,464 NZD
View
A
Retailer 18
-
$1,559 NZD
View
A
Retailer 19
-
$1,627 NZD
View
B+
Retailer 20
-
$1,928 NZD
View
B+
Retailer 21
-
$2,228 NZD
View
Retailer 22
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$2,320 NZD
View
Price last confirmed 26 days ago
B+
Retailer 23
-
$2,413 NZD
View
Retailer 24
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$2,468 NZD
View
Price last confirmed 36 days ago
B+
Retailer 25
-
$2,516 NZD
View
B+
Retailer 26
-
$2,594 NZD
View
B+
Retailer 27
-
$2,681 NZD
View
B+
Retailer 28
-
$2,767 NZD
View
B+
Retailer 29
-
$2,968 NZD
View
Retailer 30
-
$4,355 NZD
View
Price last confirmed 8 days ago
B
Retailer 31
-
$4,488 NZD
View
Most Expensive
Brilliant Earth
17456976Y · Oct 17
$5,943 NZD
$3,350 USD
View
Price last confirmed 19 days ago
31 more retailers have this diamond
Prices start from $506 NZDSave up to $3,983 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
1.55ct Radiant
$506 NZD