CaratHunter
Plans
Round|Lab Grown|IGI

2.51ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG487107062

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487107062

Diamond specifications and retailer prices

From £1,625 GBP
As of November 5, 2026
Save £3,476 GBP (68%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £5,101 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 2.51ct lab-grown round diamond

This 2.51ct 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 LG487107062 or 487107062. Listed at 9 retailers as of November 5, 2026, with prices from £1,625 to £5,101, a £3,476 spread on the same certified stone. MOH London lists it at £5,101. 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

2.51
Carat
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487107062
Dimensions8.69 × 8.71 × 5.36 mm
L/W Ratio1.00
Girdle conditionFaceted
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
8.69 mm8.71 mm2.51 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487107062
Side View
Table 59.5%Crown 34.9°GirdlePavilion 41°Culet: NoneDepth 61.6%

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: Nov 5
Current: £5,101 GBP|Low: £1,625 GBP|High: £5,183 GBP|Avg: £2,913 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4£1,625 GBP
Retailer 5£1,885 GBP
Retailer 2£2,006 GBP
Retailer 7£2,409 GBP
Retailer 6£2,945 GBP
Retailer 3£2,955 GBP
MOH London£5,101 GBP

19 data points across 7 retailers

9 retailers£1,625 GBP to £5,101 GBP

A
Cheapest Retailer
-
£1,625 GBP
A
Retailer 2
-
£1,768 GBP
View
Retailer 3
-
£1,885 GBP
View
Price last confirmed 26 days ago
B+
Retailer 4
-
£1,885 GBP
View
B+
Retailer 5
-
£2,006 GBP
View
B
Retailer 6
-
£2,592 GBP
View
B
Retailer 7
-
£2,945 GBP
View
B
Retailer 8
-
£2,955 GBP
View
Most Expensive
B
MOH London
LG487107062 · Nov 5
£5,101 GBP
View
8 more retailers have this diamond
Prices start from £1,625 GBPSave up to £3,476 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
2.51ct Round
£1,625 GBP