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Round|Lab Grown|IGI

3.78ct D VS1 Round Lab Grown Diamond

EX • D/VS1 • IGI LG792646311

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792646311

Diamond specifications and retailer prices

From $844 AUD
$593 USD
As of October 29, 2026
Save $3,963 AUD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,879 AUD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 LG792646311 or 792646311. Listed at 14 retailers as of October 29, 2026, with a 469% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792646311
Dimensions10.12 × 10.18 × 5.95 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.12 mm10.18 mm3.78 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792646311
Side View
Table 62.0%Crown 32.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 58.6%

Caratlytics Score

How it works →
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: $5,879 AUD|Low: $836 AUD|High: $6,108 AUD|Avg: $3,065 AUD|-3.8%
Rare Carat
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
October 30, 2026
Retailer 15$844 AUD
Retailer 13$945 AUD
Retailer 17$1,346 AUD
Retailer 5$1,583 AUD
Retailer 10$1,595 AUD
Retailer 7$1,668 AUD
Retailer 2$2,209 AUD
Retailer 14$2,596 AUD
Retailer 12$2,598 AUD
Retailer 16$2,753 AUD
Retailer 3$3,174 AUD
Retailer 9$3,606 AUD
Retailer 8$3,711 AUD
Retailer 6$4,155 AUD
Retailer 11$4,548 AUD
Retailer 4$4,807 AUD
Rare Carat$5,879 AUD

31 data points across 17 retailers

14 retailers$844 AUD to $4,807 AUD

A
Cheapest Retailer
-
$844 AUD
$593 USD
A
Retailer 2
-
$945 AUD
$664 USD
View
Retailer 3
-
$1,346 AUD
£745 GBP
View
Price last confirmed 13 days ago
A
Retailer 4
-
$1,583 AUD
$1,112 USD
View
A
Retailer 5
-
$1,595 AUD
€1,067 EUR
View
B+
Retailer 6
-
$2,209 AUD
View
B+
Retailer 7
-
$2,596 AUD
$1,824 USD
View
B+
Retailer 8
-
$2,598 AUD
$1,825 USD
View
B+
Retailer 9
-
$2,753 AUD
$1,934 USD
View
B+
Retailer 10
-
$3,174 AUD
$2,230 USD
View
Retailer 11
-
$4,155 AUD
SGD 3,945 SGD
View
Price last confirmed 17 days ago
B
Retailer 12
-
$4,548 AUD
£2,516 GBP
View
B
Retailer 13
-
$4,807 AUD
$3,377 USD
View
Most Expensive
Rare Carat
LGRD30-57829 · Oct 18
$5,879 AUD
$4,130 USD
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from $844 AUDSave up to $3,963 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
$844 AUD