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Radiant|Lab Grown|GCAL

0.91ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • GCAL 311690150

Shape and cutting style on the report: Radiant brilliant

Certificate GCAL 311690150

Diamond specifications and retailer prices

From £148 GBP
$197 USD
As of October 29, 2026
Save £836 GBP (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,690 GBP at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 0.91ct lab-grown radiant diamond

This 0.91ct lab-grown radiant sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 311690150. Listed at 10 retailers as of October 28, 2026, with a 565% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.91
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.5°
Pavilion angle59°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 311690150
Dimensions6.84 × 4.88 × 3.02 mm
L/W Ratio1.40
Culet sizeNone
Top View
6.84 mm4.88 mm0.91 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 311690150
Side View
Table 64.0%Crown 39.5°Girdle: MED-MEDPavilion 59°Culet: NoneDepth 62.0%

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 29
Current: £1,690 GBP|Low: £148 GBP|High: £1,690 GBP|Avg: £695 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 9£148 GBP
Retailer 3£301 GBP
Retailer 10£301 GBP
Retailer 6£349 GBP
Retailer 11£719 GBP
Retailer 8£758 GBP
Retailer 5£812 GBP
Retailer 2£826 GBP
Retailer 4£826 GBP
Retailer 7£865 GBP
Do Amore Diamonds£1,690 GBP

17 data points across 11 retailers

10 retailers£148 GBP to £984 GBP

A
Cheapest Retailer
-
£148 GBP
$197 USD
B+
Retailer 2
-
£301 GBP
$401 USD
View
Retailer 3
-
£349 GBP
$465 USD
View
Price last confirmed 8 days ago
B
Retailer 4
-
£719 GBP
CA$1,330 CAD
View
B
Retailer 5
-
£812 GBP
$1,081 USD
View
B
Retailer 6
-
£826 GBP
$1,100 USD
View
B
Retailer 7
-
£826 GBP
$1,100 USD
View
Retailer 8
-
£865 GBP
View
Price last confirmed 12 days ago
B
Retailer 9
-
£984 GBP
View
Most Expensive
Do Amore Diamonds
32-311690150 · Oct 28
£1,690 GBP
$2,250 USD
View
Price under review
9 more retailers have this diamond
Prices start from £148 GBPSave up to £836 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
0.91ct Radiant
£148 GBP