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Round|Lab Grown|IGI

1.05ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG780647301

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780647301

Diamond specifications and retailer prices

From $285 NZD
As of November 1, 2026
Save $1,609 NZD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,894 NZD at Reve Diamonds · As of November 1, 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 LG780647301 or 780647301. Listed at 19 retailers as of November 1, 2026, with prices from $285 to $1,894, a $1,609 spread on the same certified stone. Reve Diamonds lists it at $1,894. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780647301
Dimensions6.61 × 6.63 × 3.96 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.61 mm6.63 mm1.05 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780647301
Side View
Table 59.0%Crown 32.2°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 59.8%

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 1
Current: $601 NZD|Low: $272 NZD|High: $1,894 NZD|Avg: $773 NZD|+9.7%
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 3, 2026
Retailer 11$285 NZD
Retailer 7$318 NZD
Retailer 15$329 NZD
Retailer 2$352 NZD
Retailer 12$352 NZD
Retailer 5$525 NZD
Retailer 1$601 NZD
Retailer 9$617 NZD
Retailer 6$639 NZD
Retailer 8$685 NZD
Retailer 13$729 NZD
Retailer 14$1,131 NZD
Retailer 4$1,195 NZD
Retailer 3$1,210 NZD
Retailer 10$1,645 NZD
Reve Diamonds$1,894 NZD

36 data points across 16 retailers

19 retailers$285 NZD to $1,894 NZD

A
Cheapest Retailer
-
$285 NZD
A
Retailer 2
-
$318 NZD
View
Final sale: no returns
A
Retailer 3
-
$329 NZD
View
Retailer 4
-
$352 NZD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$352 NZD
View
A
Retailer 6
-
$363 NZD
View
A
Retailer 7
-
$525 NZD
View
B+
Retailer 8
-
$601 NZD
View
B+
Retailer 9
-
$617 NZD
View
B+
Retailer 10
-
$639 NZD
View
B+
Retailer 11
-
$685 NZD
View
Retailer 12
-
$729 NZD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
$786 NZD
View
B
Retailer 14
-
$1,131 NZD
View
B
Retailer 15
-
$1,195 NZD
View
B
Retailer 16
-
$1,210 NZD
View
B
Retailer 17
-
$1,229 NZD
View
B
Retailer 18
-
$1,645 NZD
View
Most Expensive
B
Reve Diamonds
911778019 · Nov 1
$1,894 NZD
$1,065 USD
View
18 more retailers have this diamond
Prices start from $285 NZDSave up to $1,609 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
$285 NZD