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Oval|Lab Grown|IGI

4.78ct G VS1 Oval Lab Grown Diamond

ID • G/VS1 • IGI LG839697977

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG839697977

Diamond specifications and retailer prices

From £393 GBP
$526 USD
As of October 29, 2026
Save £1,829 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,295 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 4.78ct lab-grown oval diamond

This 4.78ct lab-grown oval sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG839697977 or 839697977. Listed at 13 retailers as of October 29, 2026, with a 466% 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

4.78
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839697977
Dimensions13.66 × 9.38 × 5.81 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.66 mm9.38 mm4.78 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839697977
Side View
Table 61.0%Crown 36.1°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 61.9%

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: £2,295 GBP|Low: £393 GBP|High: £2,382 GBP|Avg: £1,370 GBP|-1.0%
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
October 31, 2026
Retailer 12£393 GBP
Retailer 10£440 GBP
Retailer 6£462 GBP
Retailer 2£741 GBP
Retailer 5£804 GBP
Retailer 7£975 GBP
Retailer 11£1,256 GBP
Retailer 9£1,258 GBP
Retailer 13£1,280 GBP
Retailer 3£1,703 GBP
Retailer 8£2,043 GBP
Retailer 4£2,222 GBP
Rare Carat£2,295 GBP

24 data points across 13 retailers

13 retailers£393 GBP to £2,222 GBP

A
Cheapest Retailer
-
£393 GBP
$526 USD
A
Retailer 2
-
£440 GBP
$589 USD
View
A
Retailer 3
-
£462 GBP
View
A
Retailer 4
-
£741 GBP
€945 EUR
View
A
Retailer 5
-
£804 GBP
$1,077 USD
View
A
Retailer 6
-
£975 GBP
A$2,010 AUD
View
B+
Retailer 7
-
£1,256 GBP
$1,683 USD
View
B+
Retailer 8
-
£1,258 GBP
$1,685 USD
View
B+
Retailer 9
-
£1,280 GBP
$1,715 USD
View
B+
Retailer 10
-
£1,703 GBP
$2,282 USD
View
B+
Retailer 11
-
£2,043 GBP
View
B
Retailer 12
-
£2,222 GBP
$2,977 USD
View
Most Expensive
Rare Carat
LGOV40-162305 · Oct 21
£2,295 GBP
$3,075 USD
View
Price last confirmed 10 days ago
12 more retailers have this diamond
Prices start from £393 GBPSave up to £1,829 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 Oval
£393 GBP