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Round|Lab Grown|IGI

0.59ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • IGI LG499128234

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499128234

Diamond specifications and retailer prices

From £245 GBP
As of November 5, 2026
Save £744 GBP (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,315 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 0.59ct lab-grown round diamond

This 0.59ct lab-grown round sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499128234 or 499128234. Listed at 11 retailers as of November 4, 2026, with a 304% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.59
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499128234
Dimensions5.39 × 5.35 × 3.26 mm
L/W Ratio1.01
Girdle conditionFaceted
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
5.39 mm5.35 mm0.59 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499128234
Side View
Table 60.0%Crown 35.6°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £1,315 GBP|Low: £245 GBP|High: £1,335 GBP|Avg: £568 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 2£245 GBP
Retailer 9£305 GBP
Retailer 10£316 GBP
Retailer 6£337 GBP
Retailer 3£340 GBP
Retailer 11£484 GBP
Retailer 8£539 GBP
Retailer 5£606 GBP
Retailer 12£629 GBP
Retailer 4£707 GBP
Retailer 7£990 GBP
MOH London£1,315 GBP

21 data points across 12 retailers

11 retailers£245 GBP to £990 GBP

B+
Cheapest Retailer
-
£245 GBP
B+
Retailer 2
-
£272 GBP
View
B+
Retailer 3
-
£305 GBP
View
Final sale: no returns
B+
Retailer 4
-
£316 GBP
View
Retailer 5
-
£337 GBP
View
Price last confirmed 12 days ago
B+
Retailer 6
-
£337 GBP
View
B
Retailer 7
-
£539 GBP
View
Retailer 8
-
£606 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£990 GBP
View
Retailer 10
-
£1,086 GBP
View
Price last confirmed 13 days ago
Most Expensive
MOH London
LG499128234 · Nov 5
£1,315 GBP
View
Price under review
10 more retailers have this diamond
Prices start from £245 GBPSave up to £744 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.

B+
0.59ct Round
£245 GBP