CaratHunter
Plans
Radiant|Lab Grown|IGI

1.33ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG687598627

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

Certificate IGI LG687598627

Diamond specifications and retailer prices

From £168 GBP
As of November 4, 2026
Save £1,447 GBP (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,825 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.33ct lab-grown radiant diamond

This 1.33ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG687598627 or 687598627. Listed at 24 retailers as of November 4, 2026, with a 860% 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

1.33
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687598627
Dimensions8.25 × 5.53 × 3.55 mm
L/W Ratio1.49
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
8.25 mm5.53 mm1.33 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687598627
Side View
Table 61.0%Crown 37.6°Girdle: MediumPavilion 34.9°Culet: NoneDepth 64.2%

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 4
Current: £236 GBP|Low: £162 GBP|High: £1,800 GBP|Avg: £633 GBP|-0.9%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 4, 2026
Retailer 2£168 GBP
Retailer 10£187 GBP
Retailer 21£195 GBP
Retailer 6£208 GBP
Retailer 11£208 GBP
Retailer 1£236 GBP
Retailer 19£297 GBP
Retailer 14£303 GBP
Retailer 4£390 GBP
Retailer 17£396 GBP
Retailer 12£433 GBP
Retailer 16£562 GBP
Retailer 5£672 GBP
Retailer 3£739 GBP
Retailer 15£865 GBP
Retailer 9£891 GBP
Retailer 13£891 GBP
Retailer 18£921 GBP
Retailer 8£946 GBP
Retailer 22£1,289 GBP
Retailer 7£1,615 GBP
Retailer 20£1,615 GBP

39 data points across 22 retailers

24 retailers£168 GBP to £1,615 GBP

A
Cheapest Retailer
-
£168 GBP
A
Retailer 2
-
£187 GBP
View
Final sale: no returns
A
Retailer 3
-
£195 GBP
View
Retailer 4
-
£208 GBP
View
Price last confirmed 10 days ago
A
Retailer 5
-
£208 GBP
View
A
Retailer 6
-
£236 GBP
View
A
Retailer 7
-
£297 GBP
View
A
Retailer 8
-
£303 GBP
View
A
Retailer 9
-
£390 GBP
View
A
Retailer 10
-
£396 GBP
View
A
Retailer 11
-
£433 GBP
View
A
Retailer 12
-
£524 GBP
View
A
Retailer 13
-
£562 GBP
View
B+
Retailer 14
-
£672 GBP
View
B+
Retailer 15
-
£739 GBP
View
B+
Retailer 16
-
£865 GBP
View
B+
Retailer 17
-
£891 GBP
View
B+
Retailer 18
-
£891 GBP
View
B+
Retailer 19
-
£921 GBP
View
B+
Retailer 20
-
£946 GBP
View
Retailer 21
-
£1,289 GBP
View
Price last confirmed 14 days ago
B
Retailer 22
-
£1,615 GBP
View
B
Retailer 23
-
£1,615 GBP
View
Most Expensive
Queensmith
LG687598627 · Oct 27
£1,825 GBP
View
Price last confirmed 8 days ago
23 more retailers have this diamond
Prices start from £168 GBPSave up to £1,447 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
1.33ct Radiant
£168 GBP