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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 $330 USD
As of October 31, 2026
Save $1,002 USD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,775 USD at MOH London · As of November 1, 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 October 30, 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
Color
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: Oct 31
Current: $1,775 USD|Low: $330 USD|High: $1,797 USD|Avg: $757 USD
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 1, 2026
Retailer 2$330 USD
Retailer 9$410 USD
Retailer 10$425 USD
Retailer 6$454 USD
Retailer 3$458 USD
Retailer 11$651 USD
Retailer 8$726 USD
Retailer 5$816 USD
Retailer 12$847 USD
Retailer 4$952 USD
Retailer 7$1,332 USD
MOH London$1,775 USD

22 data points across 12 retailers

11 retailers$330 USD to $1,332 USD

B+
Cheapest Retailer
-
$330 USD
Retailer 2
-
$366 USD
View
Price last confirmed 10 days ago
B+
Retailer 3
-
$410 USD
View
Final sale: no returns
B+
Retailer 4
-
$425 USD
View
Retailer 5
-
$454 USD
View
Price last confirmed 7 days ago
B
Retailer 6
-
$454 USD
View
B
Retailer 7
-
$726 USD
View
B
Retailer 8
-
$816 USD
€777 EUR
View
B
Retailer 9
-
$1,332 USD
View
Retailer 10
-
$1,461 USD
View
Price last confirmed 8 days ago
Most Expensive
MOH London
LG499128234 · Nov 1
$1,775 USD
£1,398 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $330 USDSave up to $1,002 USD

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
$330 USD