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2.78ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG845699634

Shape and cutting style on the report: Round brilliant

Certificate IGI LG845699634

Diamond specifications and retailer prices

From $1,774 NZD
£787 GBP
As of November 1, 2026
Save $21,665 NZD (92%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $23,439 NZD at Brilliant Earth · As of October 29, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG845699634 or 845699634. Listed at 14 retailers as of October 29, 2026, with prices from $1,774 to $23,439, a $21,665 spread on the same certified stone. Brilliant Earth lists it at $23,439. 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 angle34.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845699634
Dimensions8.99 × 9.07 × 5.56 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
8.99 mm9.07 mm2.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845699634
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.5%

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: Nov 1
Current: $5,881 NZD|Low: $1,774 NZD|High: $6,192 NZD|Avg: $3,703 NZD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 7$1,774 NZD
Retailer 4$1,817 NZD
Retailer 2$2,079 NZD
Retailer 9$2,376 NZD
Retailer 11$2,452 NZD
Retailer 12$2,539 NZD
Retailer 10$4,048 NZD
Retailer 3$4,125 NZD
Retailer 8$5,283 NZD
Retailer 6$5,302 NZD
Retailer 13$5,303 NZD
Retailer 5$5,416 NZD
Retailer 1$5,881 NZD

11 data points across 13 retailers

14 retailers$1,774 NZD to $23,439 NZD

A
Cheapest Retailer
-
$1,774 NZD
£787 GBP
A
Retailer 2
-
$1,817 NZD
HK$8,000 HKD
View
A
Retailer 3
-
$2,079 NZD
$1,172 USD
View
A
Retailer 4
-
$2,376 NZD
£1,054 GBP
View
A
Retailer 5
-
$2,452 NZD
€1,316 EUR
View
A
Retailer 6
-
$2,539 NZD
$1,431 USD
View
A
Retailer 7
-
$4,048 NZD
ZAR 36,854 ZAR
View
A
Retailer 8
-
$4,125 NZD
$2,325 USD
View
B+
Retailer 9
-
$5,283 NZD
SGD 4,024 SGD
View
B+
Retailer 10
-
$5,302 NZD
$2,988 USD
View
B+
Retailer 11
-
$5,303 NZD
$2,989 USD
View
B+
Retailer 12
-
$5,416 NZD
$3,053 USD
View
B+
Retailer 13
-
$5,881 NZD
£2,610 GBP
View
Most Expensive
B
Brilliant Earth
22283664A · Oct 29
$23,439 NZD
$13,210 USD
View
13 more retailers have this diamond
Prices start from $1,774 NZDSave up to $21,665 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
$1,774 NZD