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Radiant|Lab Grown|IGI

1.67ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG816611920

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

Certificate IGI LG816611920

Diamond specifications and retailer prices

From £711 GBP
$953 USD
As of October 30, 2026
Save £2,558 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,269 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 LG816611920 or 816611920. Listed at 8 retailers as of October 30, 2026, with prices from £711 to £3,269, a £2,558 spread on the same certified stone. Do Amore Diamonds lists it at £3,269. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816611920
Dimensions8.49 × 5.84 × 3.93 mm
L/W Ratio1.45
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
8.49 mm5.84 mm1.67 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816611920
Side View
Table 68.0%Crown 41.6°Girdle: MED-STKPavilionCulet: NoneDepth 67.3%

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 30
Current: £3,269 GBP|Low: £379 GBP|High: £3,948 GBP|Avg: £1,633 GBP|-12.2%
Do Amore Diamonds
Retailer 2
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Retailer 17
October 30, 2026
Retailer 3£379 GBP
Retailer 6£413 GBP
Retailer 12£711 GBP
Retailer 11£743 GBP
Retailer 16£941 GBP
Retailer 5£1,002 GBP
Retailer 4£1,031 GBP
Retailer 9£1,120 GBP
Retailer 13£1,132 GBP
Retailer 15£1,507 GBP
Retailer 17£1,729 GBP
Retailer 7£2,070 GBP
Retailer 10£2,116 GBP
Retailer 8£2,455 GBP
Retailer 2£2,761 GBP
Retailer 14£2,974 GBP
Do Amore Diamonds£3,269 GBP

14 data points across 17 retailers

8 retailers£711 GBP to £3,269 GBP

A
Cheapest Retailer
-
£711 GBP
$953 USD
A
Retailer 2
-
£743 GBP
$995 USD
View
B+
Retailer 3
-
£1,132 GBP
$1,517 USD
View
B+
Retailer 4
-
£1,507 GBP
$2,019 USD
View
B
Retailer 5
-
£2,116 GBP
View
B
Retailer 6
-
£2,761 GBP
$3,700 USD
View
B
Retailer 7
-
£2,974 GBP
$3,985 USD
View
Most Expensive
B
Do Amore Diamonds
27-397C0C158 · Oct 30
£3,269 GBP
$4,380 USD
View
7 more retailers have this diamond
Prices start from £711 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
£711 GBP