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Radiant|Lab Grown|IGI

6.18ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG627406053

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG627406053

Diamond specifications and retailer prices

From £585 GBP
$784 USD
As of November 2, 2026
Save £3,639 GBP (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,224 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.18ct lab-grown radiant diamond

This 6.18ct lab-grown radiant 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 LG627406053 or 627406053. Listed at 21 retailers as of October 31, 2026, with prices from £585 to £4,224, a £3,639 spread on the same certified stone. Brilliant Earth lists it at £4,224. 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

6.18
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627406053
Dimensions13.05 × 9.03 × 6.09 mm
L/W Ratio1.45
Culet sizePointed
Top View
13.05 mm9.03 mm6.18 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627406053
Side View
Table 64.0%Crown 33.7°Girdle: MediumPavilion 35.3°Culet: NoneDepth 67.4%

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: Nov 2
Current: £4,224 GBP|Low: £578 GBP|High: £4,359 GBP|Avg: £1,523 GBP|-2.9%
Brilliant Earth
Retailer 2
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Retailer 4
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Retailer 22
November 2, 2026
Retailer 4£585 GBP
Retailer 21£637 GBP
Retailer 9£654 GBP
Retailer 6£678 GBP
Retailer 12£678 GBP
Retailer 2£726 GBP
Retailer 20£810 GBP
Retailer 13£1,040 GBP
Retailer 7£1,049 GBP
Retailer 10£1,096 GBP
Retailer 17£1,115 GBP
Retailer 18£1,257 GBP
Retailer 19£1,313 GBP
Retailer 3£1,614 GBP
Retailer 8£1,735 GBP
Retailer 22£1,908 GBP
Retailer 11£2,175 GBP
Retailer 14£2,293 GBP
Retailer 15£2,344 GBP
Retailer 16£2,543 GBP
Retailer 5£3,052 GBP
Brilliant Earth£4,224 GBP

32 data points across 22 retailers

21 retailers£585 GBP to £4,224 GBP

A
Cheapest Retailer
-
£585 GBP
$784 USD
A
Retailer 2
-
£637 GBP
$853 USD
View
A
Retailer 3
-
£678 GBP
$909 USD
View
Retailer 4
-
£678 GBP
$909 USD
View
Price last confirmed 22 days ago
A
Retailer 5
-
£726 GBP
View
A
Retailer 6
-
£810 GBP
$1,085 USD
View
A
Retailer 7
-
£1,040 GBP
View
A
Retailer 8
-
£1,049 GBP
$1,406 USD
View
B+
Retailer 9
-
£1,096 GBP
$1,468 USD
View
A
Retailer 10
-
£1,115 GBP
€1,423 EUR
View
A
Retailer 11
-
£1,257 GBP
A$2,591 AUD
View
A
Retailer 12
-
£1,313 GBP
ZAR 28,411 ZAR
View
B+
Retailer 13
-
£1,614 GBP
$2,162 USD
View
B+
Retailer 14
-
£1,735 GBP
$2,325 USD
View
B+
Retailer 15
-
£1,908 GBP
$2,556 USD
View
Retailer 16
-
£2,175 GBP
$2,914 USD
View
Price last confirmed 22 days ago
B+
Retailer 17
-
£2,293 GBP
$3,072 USD
View
B+
Retailer 18
-
£2,344 GBP
$3,141 USD
View
B+
Retailer 19
-
£2,543 GBP
View
B
Retailer 20
-
£3,052 GBP
$4,090 USD
View
Most Expensive
B
Brilliant Earth
9815203A · Oct 31
£4,224 GBP
$5,660 USD
View
20 more retailers have this diamond
Prices start from £585 GBPSave up to £3,639 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
6.18ct Radiant
£585 GBP