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2.78ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG804660594

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804660594

Diamond specifications and retailer prices

From $2,291 NZD
$1,291 USD
As of October 30, 2026
Save $17,972 NZD (89%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $20,263 NZD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 2.78ct lab-grown round diamond

This 2.78ct lab-grown round sits in the two to three carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804660594 or 804660594. Listed at 6 retailers as of October 26, 2026, with prices from $2,291 to $20,263, a $17,972 spread on the same certified stone. Brilliant Earth lists it at $20,263. 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
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804660594
Dimensions9.05 × 8.99 × 5.57 mm
L/W Ratio1.01
Girdle conditionFaceted
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
9.05 mm8.99 mm2.78 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804660594
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.7%

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: $20,263 NZD|Low: $2,291 NZD|High: $20,901 NZD|Avg: $7,195 NZD|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 3$2,291 NZD
Retailer 4$2,924 NZD
Retailer 5$3,607 NZD
Retailer 6$4,439 NZD
Retailer 2$6,866 NZD
Brilliant Earth$20,263 NZD

25 data points across 6 retailers

6 retailers$2,291 NZD to $20,263 NZD

A
Cheapest Retailer
-
$2,291 NZD
$1,291 USD
A
Retailer 2
-
$2,924 NZD
$1,648 USD
View
A
Retailer 3
-
$3,607 NZD
€1,936 EUR
View
Retailer 4
-
$4,439 NZD
$2,502 USD
View
Price last confirmed 28 days ago
B+
Retailer 5
-
$6,866 NZD
£3,047 GBP
View
Most Expensive
B
Brilliant Earth
20416073A · Oct 26
$20,263 NZD
$11,420 USD
View
5 more retailers have this diamond
Prices start from $2,291 NZDSave up to $17,972 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
2.78ct Round
$2,291 NZD