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Radiant|Lab Grown|IGI

1.85ct F IF Radiant Lab Grown Diamond

EX • F/IF • IGI LG680543344

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

Certificate IGI LG680543344

Diamond specifications and retailer prices

From £599 GBP
As of November 4, 2026
Save £909 GBP (60%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,095 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.85ct lab-grown radiant diamond

This 1.85ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG680543344 or 680543344. Listed at 9 retailers as of November 4, 2026, with a 152% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.85
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG680543344
Dimensions6.19 × 6.19 × 4.18 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.19 mm6.19 mm1.85 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG680543344
Side View
Table 67.0%Crown 42.8°Girdle: Slightly ThickPavilion 36°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
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: Nov 4
Current: £2,095 GBP|Low: £599 GBP|High: £2,095 GBP|Avg: £1,070 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 6£599 GBP
Retailer 8£647 GBP
Retailer 3£674 GBP
Retailer 4£716 GBP
Retailer 5£1,114 GBP
Retailer 9£1,269 GBP
Retailer 7£1,348 GBP
Retailer 2£1,508 GBP
Rare Carat£2,095 GBP

45 data points across 9 retailers

9 retailers£599 GBP to £1,508 GBP

A
Cheapest Retailer
-
£599 GBP
A
Retailer 2
-
£647 GBP
View
A
Retailer 3
-
£674 GBP
View
A
Retailer 4
-
£716 GBP
View
B+
Retailer 5
-
£1,114 GBP
View
Retailer 6
-
£1,269 GBP
View
Price last confirmed 28 days ago
B
Retailer 7
-
£1,348 GBP
View
B
Retailer 8
-
£1,508 GBP
View
Most Expensive
Rare Carat
SKD-35718 · Oct 21
£2,095 GBP
$2,820 USD
View
Price last confirmed 15 days ago
8 more retailers have this diamond
Prices start from £599 GBPSave up to £909 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
1.85ct Radiant
£599 GBP