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Round|Lab Grown|IGI

3.78ct D VS1 Round Lab Grown Diamond

EX • D/VS1 • IGI LG809671388

Shape and cutting style on the report: Round brilliant

Certificate IGI LG809671388

Diamond specifications and retailer prices

From $844 AUD
$593 USD
As of October 29, 2026
Save $6,828 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 LG809671388 or 809671388. Listed at 14 retailers as of October 29, 2026, with prices from $844 to $7,672, a $6,828 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809671388
Dimensions10.01 × 10.09 × 6.02 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
10.01 mm10.09 mm3.78 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809671388
Side View
Table 62.0%Crown 32.4°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 59.9%

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 29
Current: $7,672 AUD|Low: $836 AUD|High: $7,914 AUD|Avg: $3,421 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 29, 2026
Retailer 15$844 AUD
Retailer 13$945 AUD
Retailer 17$1,346 AUD
Retailer 5$1,583 AUD
Retailer 2$1,595 AUD
Retailer 7$1,668 AUD
Retailer 12$2,223 AUD
Retailer 14$2,596 AUD
Retailer 11$2,598 AUD
Retailer 16$2,753 AUD
Retailer 3$3,174 AUD
Retailer 8$3,606 AUD
Retailer 6$4,197 AUD
Retailer 10$4,548 AUD
Retailer 4$4,807 AUD
Retailer 9$6,605 AUD
Brilliant Earth$7,672 AUD

29 data points across 17 retailers

14 retailers$844 AUD to $7,672 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
Retailer 6
-
$2,223 AUD
View
Price last confirmed 9 days ago
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
-
$4,197 AUD
SGD 3,985 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
B
Brilliant Earth
20805287A · Oct 29
$7,672 AUD
$5,390 USD
View
13 more retailers have this diamond
Prices start from $844 AUDSave up to $6,828 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