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2.59ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG485163253

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485163253

Diamond specifications and retailer prices

From £1,676 GBP
As of November 5, 2026
Save £3,585 GBP (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £5,261 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 2.59ct lab-grown round diamond

This 2.59ct lab-grown round sits in the two to three carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485163253 or 485163253. Listed at 10 retailers as of November 5, 2026, with prices from £1,676 to £5,261, a £3,585 spread on the same certified stone. MOH London lists it at £5,261. 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

2.59
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485163253
Dimensions8.98 × 9.05 × 5.26 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.98 mm9.05 mm2.59 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485163253
Side View
Table 58.5%Crown 31.6°Girdle: THN-STKPavilion 40.4°Culet: NoneDepth 58.3%

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: £5,261 GBP|Low: £1,609 GBP|High: £5,346 GBP|Avg: £2,727 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5£1,676 GBP
Retailer 2£1,885 GBP
Retailer 6£1,944 GBP
Retailer 8£1,944 GBP
Retailer 3£2,066 GBP
Retailer 9£2,479 GBP
Retailer 4£2,980 GBP
Retailer 7£3,036 GBP
MOH London£5,261 GBP

40 data points across 9 retailers

10 retailers£1,676 GBP to £5,261 GBP

A
Cheapest Retailer
-
£1,676 GBP
A
Retailer 2
-
£1,824 GBP
View
A
Retailer 3
-
£1,885 GBP
View
A
Retailer 4
-
£1,944 GBP
View
Retailer 5
-
£1,944 GBP
View
Price last confirmed 26 days ago
B+
Retailer 6
-
£2,066 GBP
View
B
Retailer 7
-
£2,673 GBP
View
B
Retailer 8
-
£2,980 GBP
View
B
Retailer 9
-
£3,036 GBP
View
Most Expensive
B
MOH London
LG485163253 · Nov 5
£5,261 GBP
View
9 more retailers have this diamond
Prices start from £1,676 GBPSave up to £3,585 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
2.59ct Round
£1,676 GBP