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 $2,099 USD
HK$16,400 HKD
As of October 30, 2026
Save $6,421 USD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,520 USD 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 $2,099 to $8,520, a $6,421 spread on the same certified stone. Brilliant Earth lists it at $8,520. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $8,520 USD|Low: $2,099 USD|High: $9,680 USD|Avg: $4,947 USD|-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$2,099 USD
Retailer 2$2,431 USD
Retailer 9$2,600 USD
Retailer 4$2,762 USD
Retailer 6$2,763 USD
Retailer 8$4,488 USD
Retailer 5$4,944 USD
Retailer 3$5,895 USD
Retailer 7$6,056 USD
Retailer 11$6,628 USD
Brilliant Earth$8,520 USD

30 data points across 11 retailers

11 retailers$2,099 USD to $8,520 USD

A
Cheapest Retailer
-
$2,099 USD
HK$16,400 HKD
B+
Retailer 2
-
$2,431 USD
£1,914 GBP
View
B+
Retailer 3
-
$2,600 USD
View
Retailer 4
-
$2,762 USD
€2,630 EUR
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$2,763 USD
View
B
Retailer 6
-
$4,488 USD
View
B
Retailer 7
-
$4,944 USD
£3,893 GBP
View
Retailer 8
-
$5,895 USD
View
Price last confirmed 32 days ago
B
Retailer 9
-
$6,056 USD
View
B
Retailer 10
-
$6,628 USD
View
Most Expensive
B
Brilliant Earth
21582521A · Oct 30
$8,520 USD
View
10 more retailers have this diamond
Prices start from $2,099 USDSave up to $6,421 USD

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
$2,099 USD