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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 $263 NZD
As of November 5, 2026
Save $1,566 NZD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,829 NZD 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 $263 to $1,829, a $1,566 spread on the same certified stone. Reve Diamonds lists it at $1,829. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $295 NZD|Low: $261 NZD|High: $1,829 NZD|Avg: $693 NZD|+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$263 NZD
Retailer 1$295 NZD
Retailer 16$306 NZD
Retailer 3$327 NZD
Retailer 5$327 NZD
Retailer 9$518 NZD
Retailer 10$559 NZD
Retailer 4$603 NZD
Retailer 13$640 NZD
Retailer 15$729 NZD
Retailer 2$763 NZD
Retailer 14$865 NZD
Retailer 17$872 NZD
Retailer 8$1,050 NZD
Retailer 12$1,110 NZD
Retailer 6$1,147 NZD
Retailer 11$1,521 NZD
Reve Diamonds$1,829 NZD

45 data points across 18 retailers

22 retailers$263 NZD to $1,829 NZD

Retailer 1
-
$261 NZD
Price last confirmed 45 days ago
A
Retailer 2
-
$263 NZD
View
A
Retailer 3
-
$295 NZD
View
Final sale: no returns
A
Retailer 4
-
$306 NZD
View
Retailer 5
-
$320 NZD
View
Price last confirmed 45 days ago
Retailer 6
-
$327 NZD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$327 NZD
View
A
Retailer 8
-
$518 NZD
View
A
Retailer 9
-
$559 NZD
View
B+
Retailer 10
-
$603 NZD
View
B+
Retailer 11
-
$640 NZD
View
Retailer 12
-
$729 NZD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
$763 NZD
View
B+
Retailer 14
-
$865 NZD
View
Retailer 15
-
$872 NZD
View
Price last confirmed 16 days ago
B+
Retailer 16
-
$882 NZD
View
Retailer 17
-
$1,042 NZD
View
Price last confirmed 46 days ago
B
Retailer 18
-
$1,050 NZD
View
B
Retailer 19
-
$1,110 NZD
View
B
Retailer 20
-
$1,147 NZD
View
B
Retailer 21
-
$1,521 NZD
View
Most Expensive
B
Reve Diamonds
679DF302F · Nov 4
$1,829 NZD
$1,028 USD
View
21 more retailers have this diamond
Prices start from $263 NZDSave up to $1,566 NZD

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
$263 NZD