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Round|Lab Grown|IGI

0.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG694586400

Shape and cutting style on the report: Round brilliant

Certificate IGI LG694586400

Diamond specifications and retailer prices

From $93 USD
As of November 5, 2026
Save $760 USD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $853 USD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG694586400 or 694586400. Listed at 17 retailers as of November 4, 2026, with prices from $93 to $853, a $760 spread on the same certified stone. Reve Diamonds lists it at $853. 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

0.51
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG694586400
Dimensions5.15 × 5.16 × 3.11 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
5.15 mm5.16 mm0.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG694586400
Side View
Table 60.0%Crown 34.2°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.2%

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: Nov 5
Current: $215 USD|Low: $89 USD|High: $854 USD|Avg: $283 USD|+7.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Reve Diamonds
November 6, 2026
Retailer 5$93 USD
Retailer 12$104 USD
Retailer 7$108 USD
Retailer 2$123 USD
Retailer 14$123 USD
Retailer 8$150 USD
Retailer 1$215 USD
Retailer 10$241 USD
Retailer 15$242 USD
Retailer 6$250 USD
Retailer 13$348 USD
Retailer 4$372 USD
Retailer 9$415 USD
Retailer 3$431 USD
Retailer 11$850 USD
Reve Diamonds$853 USD

43 data points across 16 retailers

17 retailers$93 USD to $853 USD

A
Cheapest Retailer
-
$93 USD
A
Retailer 2
-
$104 USD
View
Final sale: no returns
A
Retailer 3
-
$108 USD
View
Retailer 4
-
$123 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$123 USD
View
A
Retailer 6
-
$150 USD
View
A
Retailer 7
-
$215 USD
View
B+
Retailer 8
-
$241 USD
View
B+
Retailer 9
-
$242 USD
View
B+
Retailer 10
-
$250 USD
View
B+
Retailer 11
-
$272 USD
View
B+
Retailer 12
-
$348 USD
View
B+
Retailer 13
-
$372 USD
View
B
Retailer 14
-
$415 USD
View
B
Retailer 15
-
$431 USD
View
B
Retailer 16
-
$850 USD
View
Most Expensive
B
Reve Diamonds
FFCE2DF10 · Nov 4
$853 USD
View
16 more retailers have this diamond
Prices start from $93 USDSave up to $760 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
0.51ct Round
$93 USD