CaratHunter
Plans
Radiant|Lab Grown|IGI

4.78ct G VS1 Radiant Lab Grown Diamond

VG • G/VS1

Diamond specifications and retailer prices

From £446 GBP
$597 USD
As of October 30, 2026
Save £3,939 GBP (90%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £4,385 GBP at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 4.78ct lab-grown radiant diamond

This 4.78ct lab-grown radiant sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI. Listed at 4 retailers as of October 30, 2026, with prices from £446 to £4,385, a £3,939 spread on the same certified stone. Helzberg Diamonds lists it at £4,385. 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

4.78
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions11.74 × 8.35 × 5.67 mm
L/W Ratio1.41
Top View
11.74 mm8.35 mm4.78 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.9%

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 30
Current: £4,385 GBP|Low: £446 GBP|High: £5,846 GBP|Avg: £1,971 GBP|-25.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2£446 GBP
Retailer 3£524 GBP
Retailer 4£807 GBP
Helzberg Diamonds£4,385 GBP

37 data points across 4 retailers

4 retailers£446 GBP to £4,385 GBP

A
Cheapest Retailer
-
£446 GBP
$597 USD
A
Retailer 2
-
£524 GBP
View
B+
Retailer 3
-
£807 GBP
$1,081 USD
View
Most Expensive
C
Helzberg Diamonds
ZXZOJHMNOGJN · Oct 30
£4,385 GBP
$5,875 USD
View
3 more retailers have this diamond
Prices start from £446 GBPSave up to £3,939 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
4.78ct Radiant
£446 GBP