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Radiant|Lab Grown|IGI

2.55ct D FL Radiant Lab Grown Diamond

GD • D/FL • IGI LG818684455

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

Certificate IGI LG818684455

Diamond specifications and retailer prices

From $3,725 NZD
HK$16,400 HKD
As of October 30, 2026
Save $11,392 NZD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $15,117 NZD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.55ct lab-grown radiant diamond

This 2.55ct lab-grown radiant sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG818684455 or 818684455. Listed at 11 retailers as of October 30, 2026, with prices from $3,725 to $15,117, a $11,392 spread on the same certified stone. Brilliant Earth lists it at $15,117. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.55
Carat
D
Colour
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818684455
Dimensions9.60 × 6.92 × 4.50 mm
L/W Ratio1.39
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
9.60 mm6.92 mm2.55 ctD / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818684455
Side View
Table 62.0%Crown 40.8°Girdle: Slightly ThickPavilion 33.5°Culet: NoneDepth 65.0%

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: $15,117 NZD|Low: $3,725 NZD|High: $17,175 NZD|Avg: $8,778 NZD|-12.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 10$3,725 NZD
Retailer 2$4,314 NZD
Retailer 9$4,613 NZD
Retailer 4$4,900 NZD
Retailer 6$4,902 NZD
Retailer 8$7,963 NZD
Retailer 5$8,772 NZD
Retailer 3$10,459 NZD
Retailer 7$10,746 NZD
Retailer 11$11,760 NZD
Brilliant Earth$15,117 NZD

30 data points across 11 retailers

11 retailers$3,725 NZD to $15,117 NZD

A
Cheapest Retailer
-
$3,725 NZD
HK$16,400 HKD
B+
Retailer 2
-
$4,314 NZD
£1,914 GBP
View
B+
Retailer 3
-
$4,613 NZD
$2,600 USD
View
Retailer 4
-
$4,900 NZD
€2,630 EUR
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$4,902 NZD
$2,763 USD
View
B
Retailer 6
-
$7,963 NZD
$4,488 USD
View
B
Retailer 7
-
$8,772 NZD
£3,893 GBP
View
Retailer 8
-
$10,459 NZD
$5,895 USD
View
Price last confirmed 34 days ago
B
Retailer 9
-
$10,746 NZD
$6,056 USD
View
B
Retailer 10
-
$11,760 NZD
$6,628 USD
View
Most Expensive
B
Brilliant Earth
21582521A · Oct 30
$15,117 NZD
$8,520 USD
View
10 more retailers have this diamond
Prices start from $3,725 NZDSave up to $11,392 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
2.55ct Radiant
$3,725 NZD