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Round|Lab Grown|IGI

6.85ct G VS1 Round Lab Grown Diamond

EX • G/VS1 • IGI LG625469438

Shape and cutting style on the report: Round brilliant

Certificate IGI LG625469438

Diamond specifications and retailer prices

From £731 GBP
$979 USD
As of October 29, 2026
Save £4,292 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £5,023 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 6.85ct lab-grown round diamond

This 6.85ct 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 LG625469438 or 625469438. Listed at 23 retailers as of October 29, 2026, with prices from £731 to £5,023, a £4,292 spread on the same certified stone. Brilliant Earth lists it at £5,023. 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

6.85
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625469438
Dimensions12.20 × 12.26 × 7.36 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
12.20 mm12.26 mm6.85 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625469438
Side View
Table 61.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.1%

Caratlytics Score

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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: £5,023 GBP|Low: £702 GBP|High: £5,023 GBP|Avg: £1,843 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 3£731 GBP
Retailer 4£818 GBP
Retailer 7£848 GBP
Retailer 12£978 GBP
Retailer 16£1,115 GBP
Retailer 13£1,187 GBP
Retailer 8£1,217 GBP
Retailer 11£1,265 GBP
Retailer 2£1,303 GBP
Retailer 9£1,587 GBP
Retailer 10£1,640 GBP
Retailer 5£2,619 GBP
Retailer 6£2,629 GBP
Retailer 14£2,879 GBP
Retailer 15£3,900 GBP
Brilliant Earth£5,023 GBP

42 data points across 16 retailers

23 retailers£731 GBP to £5,023 GBP

A
Cheapest Retailer
-
£731 GBP
$979 USD
A
Retailer 2
-
£795 GBP
$1,065 USD
View
A
Retailer 3
-
£818 GBP
$1,096 USD
View
Final sale: no returns
A
Retailer 4
-
£848 GBP
$1,136 USD
View
Retailer 5
-
£848 GBP
$1,136 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
£978 GBP
$1,310 USD
View
Retailer 7
-
£1,115 GBP
View
Price last confirmed 14 days ago
B+
Retailer 8
-
£1,187 GBP
$1,590 USD
View
A
Retailer 9
-
£1,217 GBP
$1,630 USD
View
A
Retailer 10
-
£1,265 GBP
€1,614 EUR
View
A
Retailer 11
-
£1,303 GBP
View
B+
Retailer 12
-
£1,587 GBP
$2,126 USD
View
B+
Retailer 13
-
£1,589 GBP
$2,129 USD
View
B+
Retailer 14
-
£1,640 GBP
ZAR 35,506 ZAR
View
B+
Retailer 15
-
£2,024 GBP
$2,713 USD
View
B+
Retailer 16
-
£2,264 GBP
$3,033 USD
View
B+
Retailer 17
-
£2,343 GBP
View
B
Retailer 18
-
£2,619 GBP
$3,509 USD
View
B
Retailer 19
-
£2,629 GBP
$3,522 USD
View
B
Retailer 20
-
£2,879 GBP
View
B
Retailer 21
-
£2,953 GBP
$3,957 USD
View
Retailer 22
-
£3,900 GBP
$5,225 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
9516831A · Oct 29
£5,023 GBP
$6,730 USD
View
22 more retailers have this diamond
Prices start from £731 GBPSave up to £4,292 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
6.85ct Round
£731 GBP