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Heart|Lab Grown|IGI

3.78ct E VVS2 Heart Lab Grown Diamond

ID • E/VVS2 • IGI LG770665521

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG770665521

Diamond specifications and retailer prices

From $1,065 NZD
$600 USD
As of October 30, 2026
Save $8,552 NZD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $9,617 NZD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.78ct lab-grown heart diamond

This 3.78ct lab-grown heart sits in the three to five carat band, graded E colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG770665521 or 770665521. Listed at 22 retailers as of October 30, 2026, with prices from $1,065 to $9,617, a $8,552 spread on the same certified stone. Brilliant Earth lists it at $9,617. 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

3.78
Carat
E
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle42.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770665521
Dimensions9.73 × 10.66 × 6.41 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.73 mm10.66 mm3.78 ctE / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770665521
Side View
Table 57.0%Crown 33.9°Girdle: MED-STKPavilion 42.2°Culet: NoneDepth 60.1%

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: $9,617 NZD|Low: $1,050 NZD|High: $15,330 NZD|Avg: $3,498 NZD|-37.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 8$1,065 NZD
Retailer 15$1,242 NZD
Retailer 14$1,320 NZD
Retailer 11$1,357 NZD
Retailer 10$1,570 NZD
Retailer 4$1,748 NZD
Retailer 18$1,854 NZD
Retailer 12$2,066 NZD
Retailer 16$2,278 NZD
Retailer 2$2,790 NZD
Retailer 19$2,868 NZD
Retailer 9$2,951 NZD
Retailer 5$3,416 NZD
Retailer 3$3,474 NZD
Retailer 6$4,216 NZD
Retailer 7$4,271 NZD
Retailer 13$4,315 NZD
Retailer 17$5,764 NZD
Brilliant Earth$9,617 NZD

33 data points across 19 retailers

22 retailers$1,065 NZD to $9,617 NZD

A
Cheapest Retailer
-
$1,065 NZD
$600 USD
A
Retailer 2
-
$1,242 NZD
$700 USD
View
Final sale: no returns
A
Retailer 3
-
$1,320 NZD
$744 USD
View
Retailer 4
-
$1,340 NZD
$755 USD
View
Price last confirmed 35 days ago
Retailer 5
-
$1,357 NZD
$765 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$1,570 NZD
$885 USD
View
B+
Retailer 7
-
$1,748 NZD
$985 USD
View
A
Retailer 8
-
$1,854 NZD
$1,045 USD
View
A
Retailer 9
-
$2,066 NZD
£917 GBP
View
A
Retailer 10
-
$2,278 NZD
€1,223 EUR
View
A
Retailer 11
-
$2,790 NZD
A$2,419 AUD
View
A
Retailer 12
-
$2,868 NZD
ZAR 26,117 ZAR
View
A
Retailer 13
-
$2,951 NZD
$1,663 USD
View
B+
Retailer 14
-
$3,416 NZD
$1,925 USD
View
B+
Retailer 15
-
$3,474 NZD
$1,958 USD
View
B+
Retailer 16
-
$3,957 NZD
$2,230 USD
View
Retailer 17
-
$4,008 NZD
A$3,475 AUD
View
Price last confirmed 155 days ago
B+
Retailer 18
-
$4,216 NZD
$2,376 USD
View
B+
Retailer 19
-
$4,271 NZD
$2,407 USD
View
B+
Retailer 20
-
$4,315 NZD
$2,432 USD
View
B+
Retailer 21
-
$5,764 NZD
£2,558 GBP
View
Most Expensive
B
Brilliant Earth
17548752A · Oct 30
$9,617 NZD
$5,420 USD
View
21 more retailers have this diamond
Prices start from $1,065 NZDSave up to $8,552 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
3.78ct Heart
$1,065 NZD