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Round|Lab Grown|IGI

3.78ct G VS2 Round Lab Grown Diamond

ID • G/VS2 • IGI LG638499477

Shape and cutting style on the report: Round brilliant

Certificate IGI LG638499477

Diamond specifications and retailer prices

From £323 GBP
$430 USD
As of October 29, 2026
Save £1,130 GBP (78%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,847 GBP at Rare Carat · As of September 9, 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 G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG638499477 or 638499477. Listed at 6 retailers as of October 28, 2026, with a 350% 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
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG638499477
Dimensions10.07 × 10.05 × 6.07 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.07 mm10.05 mm3.78 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG638499477
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.4%

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: £1,847 GBP|Low: £240 GBP|High: £4,603 GBP|Avg: £1,267 GBP
Rare Carat
Retailer 2
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October 27, 2026
Retailer 2£323 GBP
Retailer 16£369 GBP
Retailer 11£374 GBP
Retailer 14£535 GBP
Retailer 15£573 GBP
Retailer 13£584 GBP
Retailer 12£601 GBP
Retailer 18£627 GBP
Retailer 3£957 GBP
Retailer 17£981 GBP
Retailer 8£1,099 GBP
Retailer 4£1,219 GBP
Retailer 6£1,453 GBP
Retailer 5£1,527 GBP
Rare Carat£1,847 GBP
Retailer 10£2,290 GBP
Retailer 7£2,579 GBP
Retailer 9£4,603 GBP

11 data points across 18 retailers

6 retailers£323 GBP to £1,453 GBP

A
Cheapest Retailer
-
£323 GBP
$430 USD
Final sale: no returns
Retailer 2
-
£369 GBP
$491 USD
View
Price last confirmed 44 days ago
Retailer 3
-
£535 GBP
View
Price last confirmed 43 days ago
B+
Retailer 4
-
£1,099 GBP
CA$2,033 CAD
View
B+
Retailer 5
-
£1,453 GBP
$1,935 USD
View
Most Expensive
Rare Carat
100753297366_l_638499477 · Sep 9
£1,847 GBP
$2,460 USD
View
Price last confirmed 50 days ago
5 more retailers have this diamond
Prices start from £323 GBPSave up to £1,130 GBP

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
£323 GBP