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Round|Lab Grown|GCAL

3.78ct H VS1 Round Lab Grown Diamond

VG • H/VS1

Diamond specifications and retailer prices

From £411 GBP
$551 USD
As of October 31, 2026
Save £1,767 GBP (81%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,179 GBP at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

About this 3.78ct lab-grown round diamond

This 3.78ct lab-grown round sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by GCAL. Listed at 3 retailers as of October 30, 2026, with prices from £411 to £2,179, a £1,767 spread on the same certified stone. Diamond Exchange Canada lists it at £2,179. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.78
Carat
H
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGCAL
Dimensions9.99 × 10.04 × 6.13 mm
L/W Ratio1.01
Top View
9.99 mm10.04 mm3.78 ctH / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGCAL
Side View
Table 58.0%CrownGirdle: THN-MEDPavilionCuletDepth 61.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,179 GBP|Low: £339 GBP|High: £2,179 GBP|Avg: £894 GBP
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 20, 2026
Retailer 4£339 GBP
Retailer 2£411 GBP
Retailer 6£415 GBP
Retailer 3£455 GBP
Retailer 5£1,221 GBP
Diamond Exchange Canada£2,179 GBP

13 data points across 6 retailers

3 retailers£411 GBP to £2,179 GBP

B+
Cheapest Retailer
-
£411 GBP
$551 USD
Retailer 2
-
£455 GBP
$610 USD
View
Price last confirmed 14 days ago
Most Expensive
C
Diamond Exchange Canada
1986528859 · Oct 30
£2,179 GBP
CA$4,054 CAD
View
2 more retailers have this diamond
Prices start from £411 GBPSave up to £1,767 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.

B+
3.78ct Round
£411 GBP