CaratHunter
Plans
Radiant|Lab Grown|IGI

1.55ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG783638121

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

Certificate IGI LG783638121

Diamond specifications and retailer prices

From $2,258 NZD
$1,268 USD
As of October 26, 2026
Save $4,668 NZD (67%) vs most expensive(unlock to see where)
3 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 LG783638121 or 783638121. Listed at 3 retailers as of October 26, 2026, with prices from $2,258 to $6,926, a $4,668 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 angle43.2°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783638121
Dimensions7.85 × 5.74 × 4.11 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
7.85 mm5.74 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783638121
Side View
Table 67.0%Crown 43.2°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 71.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $6,926 NZD|Low: $1,624 NZD|High: $9,544 NZD|Avg: $4,757 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
October 26, 2026
Retailer 8$1,624 NZD
Retailer 7$1,941 NZD
Retailer 2$2,258 NZD
Retailer 4$3,314 NZD
Retailer 11$3,563 NZD
Retailer 12$3,591 NZD
Retailer 3$3,679 NZD
Retailer 9$3,980 NZD
Retailer 6$6,205 NZD
Retailer 13$6,404 NZD
Brilliant Earth$6,926 NZD
Retailer 10$8,511 NZD
Retailer 5$9,544 NZD

11 data points across 13 retailers

3 retailers$2,258 NZD to $6,926 NZD

B+
Cheapest Retailer
-
$2,258 NZD
$1,268 USD
Retailer 2
-
$6,205 NZD
$3,485 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21402814Y · Oct 29
$6,926 NZD
$3,890 USD
View
2 more retailers have this diamond
Prices start from $2,258 NZDSave up to $4,668 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.

B+
1.55ct Radiant
$2,258 NZD