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Round|Lab Grown|IGI

2.55ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG485164033

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485164033

Diamond specifications and retailer prices

From £1,086 GBP
As of November 5, 2026
Save £6,455 GBP (86%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £7,541 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 2.55ct lab-grown round diamond

This 2.55ct lab-grown round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485164033 or 485164033. Listed at 14 retailers as of November 5, 2026, with prices from £1,086 to £7,541, a £6,455 spread on the same certified stone. Do Amore Diamonds lists it at £7,541. 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

2.55
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485164033
Dimensions8.86 × 8.82 × 5.35 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.86 mm8.82 mm2.55 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485164033
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.6%

Caratlytics Score

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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 5
Current: £7,541 GBP|Low: £877 GBP|High: £7,541 GBP|Avg: £2,247 GBP
Do Amore Diamonds
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
November 6, 2026
Retailer 8£1,086 GBP
Retailer 6£1,175 GBP
Retailer 3£1,193 GBP
Retailer 13£1,228 GBP
Retailer 2£1,260 GBP
Retailer 10£1,363 GBP
Retailer 11£1,401 GBP
Retailer 14£1,415 GBP
Retailer 12£2,005 GBP
Retailer 5£2,308 GBP
Retailer 4£2,383 GBP
Retailer 7£2,608 GBP
Retailer 9£3,999 GBP
Do Amore Diamonds£7,541 GBP

21 data points across 14 retailers

14 retailers£1,086 GBP to £7,541 GBP

A
Cheapest Retailer
-
£1,086 GBP
A
Retailer 2
-
£1,193 GBP
View
A
Retailer 3
-
£1,228 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,260 GBP
View
Retailer 5
-
£1,272 GBP
View
Price last confirmed 25 days ago
A
Retailer 6
-
£1,363 GBP
View
A
Retailer 7
-
£1,401 GBP
View
A
Retailer 8
-
£1,415 GBP
View
B+
Retailer 9
-
£2,005 GBP
View
B+
Retailer 10
-
£2,308 GBP
View
B+
Retailer 11
-
£2,383 GBP
View
B+
Retailer 12
-
£2,608 GBP
View
B
Retailer 13
-
£3,999 GBP
View
Most Expensive
B
Do Amore Diamonds
27-5C5909404 · Nov 6
£7,541 GBP
$10,150 USD
View
13 more retailers have this diamond
Prices start from £1,086 GBPSave up to £6,455 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
2.55ct Round
£1,086 GBP