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Radiant|Lab Grown|IGI

0.99ct E VS1 Radiant Lab Grown Diamond

EX • E/VS1 • IGI LG612318154

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

Certificate IGI LG612318154

Diamond specifications and retailer prices

From £134 GBP
$179 USD
As of October 27, 2026
Save £735 GBP (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £870 GBP at Flawless Fine Jewelry · As of October 29, 2026
View at Flawless Fine Jewelry

About this 0.99ct lab-grown radiant diamond

This 0.99ct lab-grown radiant sits in the just-under-one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG612318154 or 612318154. Listed at 16 retailers as of October 27, 2026, with prices from £134 to £870, a £735 spread on the same certified stone. Flawless Fine Jewelry lists it at £870. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.99
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle44.3°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG612318154
Dimensions6.47 × 5.07 × 3.41 mm
L/W Ratio1.28
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
6.47 mm5.07 mm0.99 ctE / VS1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG612318154
Side View
Table 67.0%Crown 44.3°Girdle: MED-STKPavilion 33.5°Culet: 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 27
Current: £299 GBP|Low: £129 GBP|High: £789 GBP|Avg: £322 GBP|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 11£134 GBP
Retailer 2£150 GBP
Retailer 3£167 GBP
Retailer 12£167 GBP
Retailer 5£216 GBP
Retailer 10£295 GBP
Retailer 1£299 GBP
Retailer 6£301 GBP
Retailer 4£346 GBP
Retailer 9£566 GBP
Retailer 7£577 GBP
Retailer 8£783 GBP

44 data points across 12 retailers

16 retailers£134 GBP to £870 GBP

A
Cheapest Retailer
-
£134 GBP
$179 USD
A
Retailer 2
-
£150 GBP
$200 USD
View
Final sale: no returns
A
Retailer 3
-
£156 GBP
$208 USD
View
A
Retailer 4
-
£167 GBP
$222 USD
View
A
Retailer 5
-
£167 GBP
$222 USD
View
A
Retailer 6
-
£216 GBP
View
A
Retailer 7
-
£264 GBP
$352 USD
View
B+
Retailer 8
-
£295 GBP
$393 USD
View
A
Retailer 9
-
£299 GBP
View
A
Retailer 10
-
£301 GBP
ZAR 6,480 ZAR
View
B+
Retailer 11
-
£346 GBP
$461 USD
View
B
Retailer 12
-
£535 GBP
$713 USD
View
B
Retailer 13
-
£566 GBP
$754 USD
View
B
Retailer 14
-
£577 GBP
$768 USD
View
B
Retailer 15
-
£783 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Flawless Fine Jewelry
31FC6CB3C · Oct 29
£870 GBP
View
15 more retailers have this diamond
Prices start from £134 GBPSave up to £735 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
0.99ct Radiant
£134 GBP