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Radiant|Lab Grown|IGI

6.12ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG821668217

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

Certificate IGI LG821668217

Diamond specifications and retailer prices

From £1,258 GBP
$1,686 USD
As of October 31, 2026
Save £5,074 GBP (80%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £6,332 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 6.12ct lab-grown radiant diamond

This 6.12ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821668217 or 821668217. Listed at 22 retailers as of October 31, 2026, with prices from £1,258 to £6,332, a £5,074 spread on the same certified stone. With Clarity lists it at £6,332. 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

6.12
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821668217
Dimensions8.34 × 12.33 × 6.45 mm
L/W Ratio1.48
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.34 mm12.33 mm6.12 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821668217
Side View
Table 60.0%Crown 48°Girdle: Very ThickPavilion 38.8°Culet: NoneDepth 77.3%

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 31
Current: £2,308 GBP|Low: £1,258 GBP|High: £4,638 GBP|Avg: £2,630 GBP|+2.3%
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
October 31, 2026
Retailer 10£1,258 GBP
Retailer 5£1,304 GBP
Retailer 6£1,826 GBP
Retailer 8£2,055 GBP
Retailer 4£2,123 GBP
Retailer 1£2,308 GBP
Retailer 9£2,420 GBP
Retailer 7£2,523 GBP
Retailer 2£2,656 GBP
Retailer 13£3,743 GBP
Retailer 11£3,767 GBP
Retailer 3£3,933 GBP
Retailer 12£4,594 GBP

39 data points across 13 retailers

22 retailers£1,258 GBP to £6,332 GBP

Retailer 1
-
£1,079 GBP
$1,446 USD
Price last confirmed 29 days ago
Retailer 2
-
£1,222 GBP
$1,638 USD
View
Price last confirmed 34 days ago
A
Retailer 3
-
£1,258 GBP
$1,686 USD
View
Final sale: no returns
Retailer 4
-
£1,304 GBP
$1,747 USD
View
Price last confirmed 28 days ago
A
Retailer 5
-
£1,429 GBP
$1,915 USD
View
B+
Retailer 6
-
£1,826 GBP
View
Retailer 7
-
£2,055 GBP
$2,753 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,123 GBP
$2,845 USD
View
B+
Retailer 9
-
£2,308 GBP
€2,945 EUR
View
Retailer 10
-
£2,420 GBP
A$4,988 AUD
View
Price last confirmed 9 days ago
Retailer 11
-
£2,443 GBP
$3,274 USD
View
Price last confirmed 30 days ago
B+
Retailer 12
-
£2,523 GBP
ZAR 54,608 ZAR
View
B+
Retailer 13
-
£2,656 GBP
$3,559 USD
View
B
Retailer 14
-
£3,151 GBP
View
B
Retailer 15
-
£3,513 GBP
$4,707 USD
View
B
Retailer 16
-
£3,743 GBP
View
B
Retailer 17
-
£3,767 GBP
$5,047 USD
View
B
Retailer 18
-
£3,815 GBP
$5,111 USD
View
Retailer 19
-
£3,933 GBP
A$8,107 AUD
View
Price last confirmed 22 days ago
B
Retailer 20
-
£4,584 GBP
$6,142 USD
View
Retailer 21
-
£4,594 GBP
$6,155 USD
View
Price last confirmed 12 days ago
Most Expensive
B
With Clarity
821668217 · Oct 31
£6,332 GBP
$8,484 USD
View
21 more retailers have this diamond
Prices start from £1,258 GBPSave up to £5,074 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
6.12ct Radiant
£1,258 GBP