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Round|Lab Grown|IGI

1.05ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG687543289

Shape and cutting style on the report: Round brilliant

Certificate IGI LG687543289

Diamond specifications and retailer prices

From $148 USD
As of November 5, 2026
Save $880 USD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,028 USD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.05ct lab-grown round diamond

This 1.05ct 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 LG687543289 or 687543289. Listed at 22 retailers as of November 4, 2026, with prices from $148 to $1,028, a $880 spread on the same certified stone. Reve Diamonds lists it at $1,028. 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

1.05
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687543289
Dimensions6.50 × 6.57 × 4.05 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
6.50 mm6.57 mm1.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687543289
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.0%

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: $166 USD|Low: $147 USD|High: $1,028 USD|Avg: $390 USD|+1.2%
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
Retailer 16
Retailer 17
Reve Diamonds
November 5, 2026
Retailer 7$148 USD
Retailer 1$166 USD
Retailer 16$172 USD
Retailer 3$184 USD
Retailer 5$184 USD
Retailer 9$291 USD
Retailer 10$314 USD
Retailer 4$339 USD
Retailer 13$360 USD
Retailer 15$410 USD
Retailer 2$429 USD
Retailer 14$486 USD
Retailer 17$490 USD
Retailer 8$590 USD
Retailer 12$624 USD
Retailer 6$645 USD
Retailer 11$855 USD
Reve Diamonds$1,028 USD

45 data points across 18 retailers

22 retailers$148 USD to $1,028 USD

Retailer 1
-
$147 USD
Price last confirmed 45 days ago
A
Retailer 2
-
$148 USD
View
A
Retailer 3
-
$166 USD
View
Final sale: no returns
A
Retailer 4
-
$172 USD
View
Retailer 5
-
$180 USD
View
Price last confirmed 45 days ago
Retailer 6
-
$184 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$184 USD
View
A
Retailer 8
-
$291 USD
View
A
Retailer 9
-
$314 USD
View
B+
Retailer 10
-
$339 USD
View
B+
Retailer 11
-
$360 USD
View
Retailer 12
-
$410 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
$429 USD
View
B+
Retailer 14
-
$486 USD
View
Retailer 15
-
$490 USD
View
Price last confirmed 16 days ago
B+
Retailer 16
-
$496 USD
View
Retailer 17
-
$586 USD
View
Price last confirmed 46 days ago
B
Retailer 18
-
$590 USD
View
B
Retailer 19
-
$624 USD
View
B
Retailer 20
-
$645 USD
View
B
Retailer 21
-
$855 USD
View
Most Expensive
B
Reve Diamonds
679DF302F · Nov 4
$1,028 USD
View
21 more retailers have this diamond
Prices start from $148 USDSave up to $880 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
1.05ct Round
$148 USD