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Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG689566199

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

Certificate IGI LG689566199

Diamond specifications and retailer prices

From $559 NZD
As of November 4, 2026
Save $2,209 NZD (80%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $4,568 NZD at Rare Carat · As of October 28, 2026
View at Rare Carat

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 LG689566199 or 689566199. Listed at 29 retailers as of November 4, 2026, with a 395% 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689566199
Dimensions8.31 × 5.87 × 3.80 mm
L/W Ratio1.42
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
8.31 mm5.87 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689566199
Side View
Table 62.0%Crown 37.9°Girdle: MediumPavilion 33.2°Culet: NoneDepth 64.7%

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: Nov 4
Current: $4,568 NZD|Low: $559 NZD|High: $4,586 NZD|Avg: $1,874 NZD|-0.4%
Rare Carat
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 5, 2026
Retailer 19$559 NZD
Retailer 13$663 NZD
Retailer 18$795 NZD
Retailer 17$967 NZD
Retailer 21$976 NZD
Retailer 8$1,128 NZD
Retailer 15$1,222 NZD
Retailer 12$1,244 NZD
Retailer 10$1,559 NZD
Retailer 6$1,627 NZD
Retailer 2$1,884 NZD
Retailer 3$2,033 NZD
Retailer 20$2,228 NZD
Retailer 7$2,304 NZD
Retailer 11$2,308 NZD
Retailer 5$2,320 NZD
Retailer 9$2,665 NZD
Retailer 4$2,767 NZD
Retailer 16$2,767 NZD
Retailer 14$2,993 NZD
Rare Carat$4,568 NZD

33 data points across 21 retailers

29 retailers$559 NZD to $2,767 NZD

A
Cheapest Retailer
-
$559 NZD
Retailer 2
-
$582 NZD
View
Price last confirmed 28 days ago
Retailer 3
-
$619 NZD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$663 NZD
View
Final sale: no returns
Retailer 5
-
$718 NZD
View
Price last confirmed 39 days ago
Retailer 6
-
$722 NZD
View
Price last confirmed 33 days ago
Retailer 7
-
$757 NZD
View
Price last confirmed 37 days ago
A
Retailer 8
-
$795 NZD
View
A
Retailer 9
-
$967 NZD
View
A
Retailer 10
-
$976 NZD
View
A
Retailer 11
-
$1,128 NZD
View
A
Retailer 12
-
$1,180 NZD
View
A
Retailer 13
-
$1,222 NZD
View
A
Retailer 14
-
$1,244 NZD
View
A
Retailer 15
-
$1,559 NZD
View
A
Retailer 16
-
$1,627 NZD
View
B+
Retailer 17
-
$1,884 NZD
View
B+
Retailer 18
-
$2,033 NZD
View
B+
Retailer 19
-
$2,228 NZD
View
B+
Retailer 20
-
$2,304 NZD
View
B+
Retailer 21
-
$2,308 NZD
View
Retailer 22
-
$2,320 NZD
View
Price last confirmed 26 days ago
B+
Retailer 23
-
$2,320 NZD
View
Retailer 24
-
$2,468 NZD
View
Price last confirmed 36 days ago
B+
Retailer 25
-
$2,665 NZD
View
B+
Retailer 26
-
$2,767 NZD
View
B+
Retailer 27
-
$2,767 NZD
View
Retailer 28
-
$2,993 NZD
View
Price last confirmed 28 days ago
Most Expensive
Rare Carat
1169-63-s · Oct 28
$4,568 NZD
$2,575 USD
View
Price last confirmed 7 days ago
28 more retailers have this diamond
Prices start from $559 NZDSave up to $2,209 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
$559 NZD