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Round|Lab Grown|IGI

6.73ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG591378421

Shape and cutting style on the report: Round brilliant

Certificate IGI LG591378421

Diamond specifications and retailer prices

From £711 GBP
$952 USD
As of October 29, 2026
Save £4,641 GBP (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,351 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 6.73ct lab-grown round diamond

This 6.73ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG591378421 or 591378421. Listed at 21 retailers as of October 29, 2026, with prices from £711 to £5,351, a £4,641 spread on the same certified stone. Brilliant Earth lists it at £5,351. 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

6.73
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591378421
Dimensions12.08 × 12.17 × 7.44 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
12.08 mm12.17 mm6.73 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591378421
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.2%

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: £5,351 GBP|Low: £711 GBP|High: £7,142 GBP|Avg: £1,968 GBP|-9.8%
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 7£711 GBP
Retailer 20£773 GBP
Retailer 10£795 GBP
Retailer 3£825 GBP
Retailer 5£825 GBP
Retailer 4£1,085 GBP
Retailer 8£1,191 GBP
Retailer 2£1,267 GBP
Retailer 11£1,320 GBP
Retailer 17£1,321 GBP
Retailer 16£1,364 GBP
Retailer 19£1,527 GBP
Retailer 13£1,595 GBP
Retailer 21£1,777 GBP
Retailer 9£2,187 GBP
Retailer 6£2,318 GBP
Retailer 14£2,557 GBP
Retailer 12£2,558 GBP
Retailer 18£2,800 GBP
Retailer 15£2,870 GBP
Retailer 22£3,896 GBP
Brilliant Earth£5,351 GBP

34 data points across 22 retailers

21 retailers£711 GBP to £5,351 GBP

A
Cheapest Retailer
-
£711 GBP
$952 USD
A
Retailer 2
-
£773 GBP
$1,036 USD
View
A
Retailer 3
-
£825 GBP
$1,105 USD
View
Retailer 4
-
£825 GBP
$1,105 USD
View
Price last confirmed 14 days ago
Retailer 5
-
£1,085 GBP
View
Price last confirmed 14 days ago
A
Retailer 6
-
£1,191 GBP
$1,596 USD
View
A
Retailer 7
-
£1,267 GBP
View
B+
Retailer 8
-
£1,320 GBP
$1,768 USD
View
A
Retailer 9
-
£1,321 GBP
$1,770 USD
View
A
Retailer 10
-
£1,364 GBP
€1,740 EUR
View
Retailer 11
-
£1,527 GBP
A$3,147 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£1,595 GBP
ZAR 34,533 ZAR
View
B+
Retailer 13
-
£1,777 GBP
$2,381 USD
View
B+
Retailer 14
-
£2,187 GBP
$2,931 USD
View
B
Retailer 15
-
£2,318 GBP
$3,106 USD
View
B
Retailer 16
-
£2,557 GBP
$3,426 USD
View
Retailer 17
-
£2,558 GBP
$3,427 USD
View
Price last confirmed 20 days ago
B
Retailer 18
-
£2,800 GBP
View
B
Retailer 19
-
£2,870 GBP
$3,845 USD
View
Retailer 20
-
£3,896 GBP
$5,220 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
7752670A · Oct 30
£5,351 GBP
$7,170 USD
View
20 more retailers have this diamond
Prices start from £711 GBPSave up to £4,641 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
6.73ct Round
£711 GBP