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Round|Lab Grown|IGI

3.78ct D VS1 Round Lab Grown Diamond

EX • D/VS1 • IGI LG799623322

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799623322

Diamond specifications and retailer prices

From $593 USD
As of October 29, 2026
Save $2,784 USD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,130 USD 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 LG799623322 or 799623322. 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
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799623322
Dimensions9.99 × 10.07 × 6.05 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
9.99 mm10.07 mm3.78 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799623322
Side View
Table 62.0%Crown 32.9°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 60.3%

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: $4,130 USD|Low: $583 USD|High: $4,295 USD|Avg: $2,058 USD|-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
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Retailer 17
October 29, 2026
Retailer 15$593 USD
Retailer 13$664 USD
Retailer 17$946 USD
Retailer 5$1,112 USD
Retailer 2$1,120 USD
Retailer 7$1,172 USD
Retailer 12$1,562 USD
Retailer 14$1,824 USD
Retailer 11$1,825 USD
Retailer 16$1,934 USD
Retailer 3$2,230 USD
Retailer 9$2,533 USD
Retailer 8$2,607 USD
Retailer 6$2,919 USD
Retailer 10$3,208 USD
Retailer 4$3,377 USD
Rare Carat$4,130 USD

31 data points across 17 retailers

14 retailers$593 USD to $3,377 USD

A
Cheapest Retailer
-
$593 USD
A
Retailer 2
-
$664 USD
View
Retailer 3
-
$946 USD
£745 GBP
View
Price last confirmed 13 days ago
A
Retailer 4
-
$1,112 USD
View
A
Retailer 5
-
$1,120 USD
€1,067 EUR
View
Retailer 6
-
$1,562 USD
A$2,403 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$1,824 USD
View
B+
Retailer 8
-
$1,825 USD
View
B+
Retailer 9
-
$1,934 USD
View
B+
Retailer 10
-
$2,230 USD
View
Retailer 11
-
$2,919 USD
SGD 3,945 SGD
View
Price last confirmed 17 days ago
B
Retailer 12
-
$3,208 USD
£2,526 GBP
View
B
Retailer 13
-
$3,377 USD
View
Most Expensive
Rare Carat
LGRD30-68313 · Oct 18
$4,130 USD
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from $593 USDSave up to $2,784 USD

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
$593 USD