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Radiant|Lab Grown|IGI

1.67ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG836614305

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

Certificate IGI LG836614305

Diamond specifications and retailer prices

From £435 GBP
$583 USD
As of October 30, 2026
Save £2,558 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £2,993 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.67ct lab-grown radiant diamond

This 1.67ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836614305 or 836614305. Listed at 23 retailers as of October 28, 2026, with prices from £435 to £2,993, a £2,558 spread on the same certified stone. Rare Carat lists it at £2,993. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.67
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836614305
Dimensions8.10 × 5.93 × 4.05 mm
L/W Ratio1.37
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.10 mm5.93 mm1.67 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836614305
Side View
Table 64.0%Crown 42.6°Girdle: MediumPavilion 36.4°Culet: NoneDepth 68.3%

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 30
Current: £2,993 GBP|Low: £435 GBP|High: £3,978 GBP|Avg: £1,362 GBP|-1.1%
Rare Carat
Retailer 2
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October 30, 2026
Retailer 12£435 GBP
Retailer 22£487 GBP
Retailer 5£505 GBP
Retailer 11£539 GBP
Retailer 17£572 GBP
Retailer 15£575 GBP
Retailer 21£638 GBP
Retailer 3£702 GBP
Retailer 6£829 GBP
Retailer 18£842 GBP
Retailer 4£880 GBP
Retailer 20£927 GBP
Retailer 8£975 GBP
Retailer 7£1,338 GBP
Retailer 10£1,418 GBP
Retailer 9£1,570 GBP
Retailer 14£1,746 GBP
Retailer 2£1,767 GBP
Retailer 23£1,928 GBP
Retailer 19£2,353 GBP
Retailer 16£2,417 GBP
Retailer 13£2,903 GBP
Rare Carat£2,993 GBP

23 data points across 23 retailers

23 retailers£435 GBP to £2,993 GBP

A
Cheapest Retailer
-
£435 GBP
$583 USD
A
Retailer 2
-
£487 GBP
$652 USD
View
A
Retailer 3
-
£505 GBP
$676 USD
View
Final sale: no returns
A
Retailer 4
-
£539 GBP
$722 USD
View
A
Retailer 5
-
£572 GBP
View
Retailer 6
-
£575 GBP
$771 USD
View
Price last confirmed 14 days ago
A
Retailer 7
-
£638 GBP
$855 USD
View
A
Retailer 8
-
£702 GBP
$941 USD
View
A
Retailer 9
-
£829 GBP
$1,111 USD
View
A
Retailer 10
-
£842 GBP
View
Retailer 11
-
£880 GBP
€1,123 EUR
View
Price last confirmed 7 days ago
B+
Retailer 12
-
£927 GBP
ZAR 20,057 ZAR
View
B+
Retailer 13
-
£975 GBP
$1,306 USD
View
B+
Retailer 14
-
£1,338 GBP
$1,793 USD
View
B+
Retailer 15
-
£1,418 GBP
$1,900 USD
View
B+
Retailer 16
-
£1,570 GBP
View
B+
Retailer 17
-
£1,746 GBP
$2,339 USD
View
B
Retailer 18
-
£1,767 GBP
$2,367 USD
View
B
Retailer 19
-
£1,928 GBP
$2,583 USD
View
B
Retailer 20
-
£2,353 GBP
View
B
Retailer 21
-
£2,417 GBP
$3,238 USD
View
B
Retailer 22
-
£2,903 GBP
$3,890 USD
View
Most Expensive
B
Rare Carat
PE-252023 · Oct 28
£2,993 GBP
$4,010 USD
View
22 more retailers have this diamond
Prices start from £435 GBPSave up to £2,558 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
1.67ct Radiant
£435 GBP