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Round|Lab Grown|GIA

1.09ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • GIA 7501197437

Certificate GIA 7501197437

Diamond specifications and retailer prices

From £145 GBP
$194 USD
As of October 29, 2026
Save £1,012 GBP (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,157 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7501197437. Listed at 16 retailers as of October 29, 2026, with prices from £145 to £1,157, a £1,012 spread on the same certified stone. Do Amore Diamonds lists it at £1,157. 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

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 7501197437
Dimensions6.64 × 6.62 × 4.07 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Growth Remnant
Top View
6.64 mm6.62 mm1.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7501197437
Side View
Table 57.0%Crown 34.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.3%

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 29
Current: £1,157 GBP|Low: £106 GBP|High: £1,464 GBP|Avg: £529 GBP|+14.0%
Do Amore Diamonds
Retailer 2
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Retailer 20
October 31, 2026
Retailer 19£145 GBP
Retailer 4£149 GBP
Retailer 5£149 GBP
Retailer 16£168 GBP
Retailer 15£213 GBP
Retailer 7£222 GBP
Retailer 8£295 GBP
Retailer 17£330 GBP
Retailer 11£392 GBP
Retailer 14£415 GBP
Retailer 9£478 GBP
Retailer 3£493 GBP
Retailer 13£579 GBP
Retailer 6£631 GBP
Retailer 2£637 GBP
Retailer 18£765 GBP
Retailer 20£773 GBP
Retailer 10£1,137 GBP
Do Amore Diamonds£1,157 GBP
Retailer 12£1,464 GBP

14 data points across 20 retailers

16 retailers£145 GBP to £1,157 GBP

A
Cheapest Retailer
-
£145 GBP
$194 USD
A
Retailer 2
-
£149 GBP
$200 USD
View
A
Retailer 3
-
£149 GBP
$200 USD
View
A
Retailer 4
-
£168 GBP
$225 USD
View
A
Retailer 5
-
£213 GBP
$285 USD
View
B+
Retailer 6
-
£222 GBP
$298 USD
View
B+
Retailer 7
-
£295 GBP
$395 USD
View
B+
Retailer 8
-
£330 GBP
View
B+
Retailer 9
-
£415 GBP
$556 USD
View
B
Retailer 10
-
£493 GBP
$660 USD
View
B
Retailer 11
-
£579 GBP
$776 USD
View
B
Retailer 12
-
£631 GBP
$846 USD
View
B
Retailer 13
-
£637 GBP
$853 USD
View
B
Retailer 14
-
£765 GBP
$1,026 USD
View
B
Retailer 15
-
£773 GBP
View
Most Expensive
B
Do Amore Diamonds
27-62661F2E0 · Oct 29
£1,157 GBP
$1,550 USD
View
15 more retailers have this diamond
Prices start from £145 GBPSave up to £1,012 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
1.09ct Round
£145 GBP