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Princess|Lab Grown|IGI

1.03ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG670465680

Shape and cutting style on the report: Princess cut

Certificate IGI LG670465680

Diamond specifications and retailer prices

From £135 GBP
As of November 6, 2026
Save £709 GBP (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £844 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.03ct lab-grown princess diamond

This 1.03ct lab-grown princess 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 IGI LG670465680 or 670465680. Listed at 19 retailers as of November 4, 2026, with prices from £135 to £844, a £709 spread on the same certified stone. Reve Diamonds lists it at £844. 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

1.03
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670465680
Dimensions5.55 × 5.42 × 3.85 mm
L/W Ratio1.02
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
5.55 mm5.42 mm1.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670465680
Side View
Table 69.0%Crown 44.7°Girdle: MediumPavilion 37.2°Culet: NoneDepth 71.0%

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 6
Current: £299 GBP|Low: £134 GBP|High: £844 GBP|Avg: £401 GBP|+4.7%
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
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Retailer 15
Retailer 16
Reve Diamonds
November 6, 2026
Retailer 3£135 GBP
Retailer 9£152 GBP
Retailer 13£157 GBP
Retailer 5£168 GBP
Retailer 16£168 GBP
Retailer 8£232 GBP
Retailer 14£296 GBP
Retailer 1£299 GBP
Retailer 12£322 GBP
Retailer 15£346 GBP
Retailer 7£353 GBP
Retailer 2£539 GBP
Retailer 10£569 GBP
Retailer 4£579 GBP
Retailer 6£684 GBP
Retailer 11£783 GBP
Reve Diamonds£844 GBP

45 data points across 17 retailers

19 retailers£135 GBP to £844 GBP

A
Cheapest Retailer
-
£135 GBP
A
Retailer 2
-
£152 GBP
View
Final sale: no returns
A
Retailer 3
-
£157 GBP
View
Retailer 4
-
£164 GBP
View
Price last confirmed 45 days ago
A
Retailer 5
-
£168 GBP
View
Retailer 6
-
£168 GBP
View
Price last confirmed 12 days ago
B+
Retailer 7
-
£232 GBP
View
B+
Retailer 8
-
£296 GBP
View
B+
Retailer 9
-
£299 GBP
View
Retailer 10
-
£322 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£346 GBP
View
Retailer 12
-
£353 GBP
View
Price last confirmed 9 days ago
B
Retailer 13
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£451 GBP
View
B
Retailer 14
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£539 GBP
View
B
Retailer 15
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£569 GBP
View
B
Retailer 16
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£579 GBP
View
B
Retailer 17
-
£684 GBP
View
B
Retailer 18
-
£783 GBP
View
Most Expensive
B
Reve Diamonds
5F6D9D6FE · Nov 4
£844 GBP
$1,136 USD
View
18 more retailers have this diamond
Prices start from £135 GBPSave up to £709 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
1.03ct Princess
£135 GBP