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Radiant|Lab Grown|IGI

1.55ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG754517897

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

Certificate IGI LG754517897

Diamond specifications and retailer prices

From $705 NZD
$396 USD
As of October 30, 2026
Save $6,221 NZD (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,926 NZD at Brilliant Earth · As of October 29, 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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754517897 or 754517897. Listed at 11 retailers as of October 29, 2026, with prices from $705 to $6,926, a $6,221 spread on the same certified stone. Brilliant Earth lists it at $6,926. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.5°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754517897
Dimensions7.78 × 5.67 × 3.92 mm
L/W Ratio1.37
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
7.78 mm5.67 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754517897
Side View
Table 65.0%Crown 47.5°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 69.1%

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: Oct 30
Current: $6,926 NZD|Low: $705 NZD|High: $8,101 NZD|Avg: $3,751 NZD|-3.0%
Brilliant Earth
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
October 28, 2026
Retailer 9$705 NZD
Retailer 15$791 NZD
Retailer 3$1,022 NZD
Retailer 13$1,387 NZD
Retailer 2$1,407 NZD
Retailer 12$2,332 NZD
Retailer 16$3,088 NZD
Retailer 14$3,105 NZD
Retailer 8$3,314 NZD
Retailer 10$3,552 NZD
Retailer 4$3,563 NZD
Retailer 5$3,591 NZD
Retailer 7$3,679 NZD
Retailer 11$6,267 NZD
Retailer 6$6,404 NZD
Brilliant Earth$6,926 NZD

26 data points across 16 retailers

11 retailers$705 NZD to $6,926 NZD

A
Cheapest Retailer
-
$705 NZD
$396 USD
A
Retailer 2
-
$791 NZD
$444 USD
View
A
Retailer 3
-
$1,022 NZD
$574 USD
View
Final sale: no returns
A
Retailer 4
-
$1,387 NZD
$779 USD
View
A
Retailer 5
-
$1,407 NZD
$790 USD
View
B+
Retailer 6
-
$2,332 NZD
$1,310 USD
View
B+
Retailer 7
-
$3,088 NZD
$1,734 USD
View
B+
Retailer 8
-
$3,105 NZD
$1,744 USD
View
B+
Retailer 9
-
$3,552 NZD
£1,571 GBP
View
B
Retailer 10
-
$6,267 NZD
$3,520 USD
View
Most Expensive
B
Brilliant Earth
21410934Y · Oct 29
$6,926 NZD
$3,890 USD
View
10 more retailers have this diamond
Prices start from $705 NZDSave up to $6,221 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
$705 NZD