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Round|Lab Grown|IGI

0.28ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG591395640

Shape and cutting style on the report: Round brilliant

Certificate IGI LG591395640

Diamond specifications and retailer prices

From $63 USD
As of October 29, 2026
Save $250 USD (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $313 USD at Taylor and Hart · As of October 28, 2026
View at Taylor and Hart

About this 0.28ct lab-grown round diamond

This 0.28ct lab-grown round sits in the sub-half-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591395640 or 591395640. Listed at 8 retailers as of October 28, 2026, with prices from $63 to $313, a $250 spread on the same certified stone. Taylor and Hart lists it at $313. 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

0.28
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591395640
Dimensions4.21 × 4.19 × 2.58 mm
L/W Ratio1.00
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
4.21 mm4.19 mm0.28 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591395640
Side View
Table 55.0%Crown 34.3°Girdle: MediumPavilion 40.4°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
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: Oct 29
Current: $165 USD|Low: $63 USD|High: $407 USD|Avg: $227 USD|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
October 29, 2026
Retailer 3$63 USD
Retailer 2$130 USD
Retailer 1$165 USD
Retailer 4$188 USD
Retailer 6$250 USD
Taylor and Hart$313 USD
Retailer 5$407 USD

9 data points across 7 retailers

8 retailers$63 USD to $313 USD

A
Cheapest Retailer
-
$63 USD
A
Retailer 2
-
$83 USD
View
A
Retailer 3
-
$83 USD
View
B+
Retailer 4
-
$130 USD
View
Price last confirmed 11 days ago
B+
Retailer 5
-
$165 USD
€157 EUR
View
B
Retailer 6
-
$188 USD
View
B
Retailer 7
-
$252 USD
View
Most Expensive
B
Taylor and Hart
4OAQVK6 · Oct 28
$313 USD
View
7 more retailers have this diamond
Prices start from $63 USDSave up to $250 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.

A
0.28ct Round
$63 USD