CaratHunter
Plans
Radiant|Lab Grown|IGI

12.85ct F VS1 Radiant Lab Grown Diamond

EX • F/VS1 • IGI LG747546594

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

Certificate IGI LG747546594

Diamond specifications and retailer prices

From £1,904 GBP
As of November 2, 2026
Save £10,838 GBP (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £18,153 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 12.85ct lab-grown radiant diamond

This 12.85ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG747546594 or 747546594. Listed at 12 retailers as of November 2, 2026, with a 569% 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

12.85
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747546594
Dimensions11.42 × 11.42 × 7.61 mm
L/W Ratio1.00
Culet sizePointed
Top View
11.42 mm11.42 mm12.85 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747546594
Side View
Table 67.0%Crown 47.1°Girdle: Slightly ThickPavilion 34.4°Culet: NoneDepth 66.6%

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: £3,587 GBP|Low: £1,904 GBP|High: £12,743 GBP|Avg: £4,335 GBP|+0.2%
Retailer 1
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
November 2, 2026
Retailer 8£1,904 GBP
Retailer 3£2,299 GBP
Retailer 6£2,379 GBP
Retailer 11£2,567 GBP
Retailer 2£3,017 GBP
Retailer 15£3,083 GBP
Retailer 4£3,180 GBP
Retailer 13£3,221 GBP
Retailer 1£3,587 GBP
Retailer 9£4,393 GBP
Retailer 7£5,001 GBP
Retailer 5£5,389 GBP
Retailer 14£6,225 GBP
Retailer 10£7,081 GBP
Retailer 12£12,743 GBP

11 data points across 15 retailers

12 retailers£1,904 GBP to £12,743 GBP

A
Cheapest Retailer
-
£1,904 GBP
A
Retailer 2
-
£2,567 GBP
$3,445 USD
View
A
Retailer 3
-
£3,017 GBP
$4,048 USD
View
A
Retailer 4
-
£3,083 GBP
$4,138 USD
View
B+
Retailer 5
-
£3,221 GBP
$4,322 USD
View
B+
Retailer 6
-
£3,259 GBP
$4,374 USD
View
B+
Retailer 7
-
£3,587 GBP
€4,584 EUR
View
B+
Retailer 8
-
£4,393 GBP
A$9,070 AUD
View
B
Retailer 9
-
£6,225 GBP
$8,354 USD
View
B
Retailer 10
-
£7,081 GBP
A$14,619 AUD
View
B
Retailer 11
-
£12,743 GBP
$17,100 USD
View
Most Expensive
Brilliant Earth
22301408A · Nov 2
£18,153 GBP
$24,360 USD
View
Price under review
11 more retailers have this diamond
Prices start from £1,904 GBPSave up to £10,838 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
12.85ct Radiant
£1,904 GBP