CaratHunter
Plans
Radiant|Lab Grown|IGI

2.78ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG743563466

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

Certificate IGI LG743563466

Diamond specifications and retailer prices

From $7,164 NZD
$4,038 USD
As of November 1, 2026
Save $6,285 NZD (47%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $13,449 NZD at Brilliant Earth · As of October 31, 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 LG743563466 or 743563466. Listed at 4 retailers as of October 31, 2026, with prices from $7,164 to $13,449, a $6,285 spread on the same certified stone. Brilliant Earth lists it at $13,449. 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 angle40.5°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743563466
Dimensions10.24 × 6.98 × 4.47 mm
L/W Ratio1.47
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
10.24 mm6.98 mm2.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743563466
Side View
Table 65.0%Crown 40.5°Girdle: MediumPavilion 36.4°Culet: NoneDepth 64.0%

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: Nov 1
Current: $13,449 NZD|Low: $4,524 NZD|High: $26,073 NZD|Avg: $13,150 NZD|-33.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 4$4,524 NZD
Retailer 3$7,164 NZD
Retailer 2$9,262 NZD
Retailer 5$10,185 NZD
Retailer 7$13,084 NZD
Brilliant Earth$13,449 NZD
Retailer 6$26,073 NZD

15 data points across 7 retailers

4 retailers$7,164 NZD to $13,449 NZD

Retailer 1
-
$4,524 NZD
$2,550 USD
Price last confirmed 19 days ago
B+
Retailer 2
-
$7,164 NZD
$4,038 USD
View
Retailer 3
-
$9,262 NZD
$5,220 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21415797Y · Oct 31
$13,449 NZD
$7,580 USD
View
3 more retailers have this diamond
Prices start from $7,164 NZDSave up to $6,285 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+
2.78ct Radiant
$7,164 NZD