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Round|Lab Grown|IGI

1.00ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG687543594

Shape and cutting style on the report: Round brilliant

Certificate IGI LG687543594

Diamond specifications and retailer prices

From $142 USD
As of October 29, 2026
Save $868 USD (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,010 USD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG687543594 or 687543594. Listed at 21 retailers as of October 29, 2026, with prices from $142 to $1,010, a $868 spread on the same certified stone. Reve Diamonds lists it at $1,010. 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

1.00
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687543594
Dimensions6.37 × 6.42 × 3.98 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
6.37 mm6.42 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687543594
Side View
Table 57.0%Crown 34.8°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.2%

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: Oct 29
Current: $158 USD|Low: $105 USD|High: $1,010 USD|Avg: $436 USD|+50.5%
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
October 30, 2026
Retailer 5$142 USD
Retailer 1$158 USD
Retailer 2$177 USD
Retailer 14$177 USD
Retailer 12$269 USD
Retailer 8$302 USD
Retailer 15$328 USD
Retailer 10$348 USD
Retailer 13$421 USD
Retailer 7$460 USD
Retailer 3$472 USD
Retailer 11$480 USD
Retailer 6$568 USD
Retailer 4$623 USD
Retailer 9$831 USD
Reve Diamonds$1,010 USD

43 data points across 16 retailers

21 retailers$142 USD to $1,010 USD

Retailer 1
-
$141 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$142 USD
View
A
Retailer 3
-
$158 USD
View
Final sale: no returns
A
Retailer 4
-
$165 USD
View
Retailer 5
-
$173 USD
View
Price last confirmed 38 days ago
A
Retailer 6
-
$177 USD
View
A
Retailer 7
-
$177 USD
View
A
Retailer 8
-
$269 USD
View
A
Retailer 9
-
$302 USD
£238 GBP
View
B+
Retailer 10
-
$328 USD
View
B+
Retailer 11
-
$348 USD
€331 EUR
View
Retailer 12
-
$405 USD
View
Price last confirmed 88 days ago
B+
Retailer 13
-
$421 USD
View
B
Retailer 14
-
$460 USD
View
B+
Retailer 15
-
$472 USD
View
B+
Retailer 16
-
$480 USD
A$738 AUD
View
Retailer 17
-
$563 USD
View
Price last confirmed 39 days ago
B
Retailer 18
-
$568 USD
View
B
Retailer 19
-
$623 USD
View
B
Retailer 20
-
$831 USD
£654 GBP
View
Most Expensive
B
Reve Diamonds
5F359FF01 · Oct 30
$1,010 USD
View
20 more retailers have this diamond
Prices start from $142 USDSave up to $868 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
1.00ct Round
$142 USD