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Radiant|Lab Grown|IGI

2.78ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG844644966

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

Certificate IGI LG844644966

Diamond specifications and retailer prices

From HK$14,812 HKD
€1,798 EUR
As of October 31, 2026
Save HK$40,343 HKD (73%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$55,155 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.78ct lab-grown radiant diamond

This 2.78ct lab-grown radiant sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG844644966 or 844644966. Listed at 6 retailers as of October 30, 2026, with prices from HK$14,812 to HK$55,155, a HK$40,343 spread on the same certified stone. Brilliant Earth lists it at HK$55,155. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.78
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844644966
Dimensions8.01 × 7.77 × 5.19 mm
L/W Ratio1.03
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
8.01 mm7.77 mm2.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844644966
Side View
Table 68.0%Crown 41°Girdle: Slightly ThickPavilion 37°Culet: NoneDepth 66.8%

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 31
Current: HK$55,155 HKD|Low: HK$14,334 HKD|High: HK$65,433 HKD|Avg: HK$31,900 HKD|-15.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 2HK$14,812 HKD
Retailer 5HK$23,953 HKD
Retailer 6HK$27,476 HKD
Retailer 3HK$33,490 HKD
Retailer 4HK$33,587 HKD
Brilliant EarthHK$55,155 HKD

8 data points across 6 retailers

6 retailersHK$14,812 HKD to HK$55,155 HKD

A
Cheapest Retailer
-
HK$14,812 HKD
€1,798 EUR
B+
Retailer 2
-
HK$23,953 HKD
$3,053 USD
View
B+
Retailer 3
-
HK$27,476 HKD
$3,502 USD
View
B+
Retailer 4
-
HK$33,490 HKD
A$6,567 AUD
View
B+
Retailer 5
-
HK$33,587 HKD
$4,281 USD
View
Most Expensive
B
Brilliant Earth
22254885A · Oct 30
HK$55,155 HKD
$7,030 USD
View
5 more retailers have this diamond
Prices start from HK$14,812 HKDSave up to HK$40,343 HKD

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
2.78ct Radiant
HK$14,812 HKD