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Round|Lab Grown|IGI

3.78ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG828624505

Shape and cutting style on the report: Round brilliant

Certificate IGI LG828624505

Diamond specifications and retailer prices

From $868 AUD
$610 USD
As of October 29, 2026
Save $6,804 AUD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,672 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.78ct lab-grown round diamond

This 3.78ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG828624505 or 828624505. Listed at 14 retailers as of October 29, 2026, with prices from $868 to $7,672, a $6,804 spread on the same certified stone. Brilliant Earth lists it at $7,672. 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
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828624505
Dimensions9.95 × 9.90 × 6.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.95 mm9.90 mm3.78 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828624505
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $7,672 AUD|Low: $864 AUD|High: $7,914 AUD|Avg: $3,498 AUD|-3.1%
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
October 29, 2026
Retailer 10$868 AUD
Retailer 8$972 AUD
Retailer 13$1,385 AUD
Retailer 2$1,640 AUD
Retailer 7$2,288 AUD
Retailer 9$2,672 AUD
Retailer 6$2,676 AUD
Retailer 11$2,831 AUD
Retailer 3$3,270 AUD
Retailer 5$4,271 AUD
Retailer 12$4,700 AUD
Retailer 4$4,953 AUD
Brilliant Earth$7,672 AUD

27 data points across 13 retailers

14 retailers$868 AUD to $7,672 AUD

A
Cheapest Retailer
-
$868 AUD
$610 USD
A
Retailer 2
-
$972 AUD
$683 USD
View
Retailer 3
-
$1,385 AUD
£766 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
$1,640 AUD
€1,097 EUR
View
Retailer 5
-
$2,288 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$2,672 AUD
$1,877 USD
View
B+
Retailer 7
-
$2,676 AUD
$1,880 USD
View
B+
Retailer 8
-
$2,831 AUD
$1,989 USD
View
B+
Retailer 9
-
$3,270 AUD
$2,297 USD
View
B
Retailer 10
-
$3,978 AUD
$2,795 USD
View
Retailer 11
-
$4,271 AUD
SGD 4,055 SGD
View
Price last confirmed 16 days ago
Retailer 12
-
$4,700 AUD
£2,600 GBP
View
Price last confirmed 8 days ago
B
Retailer 13
-
$4,953 AUD
$3,480 USD
View
Most Expensive
B
Brilliant Earth
21004857A · Oct 29
$7,672 AUD
$5,390 USD
View
13 more retailers have this diamond
Prices start from $868 AUDSave up to $6,804 AUD

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 Round
$868 AUD