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5.05ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG838637523

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG838637523

Diamond specifications and retailer prices

From $1,255 NZD
$706 USD
As of November 1, 2026
Save $9,427 NZD (88%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,682 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 5.05ct lab-grown cushion diamond

This 5.05ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG838637523 or 838637523. Listed at 11 retailers as of November 1, 2026, with prices from $1,255 to $10,682, a $9,427 spread on the same certified stone. Brilliant Earth lists it at $10,682. 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

5.05
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838637523
Dimensions10.06 × 9.83 × 6.45 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.06 mm9.83 mm5.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838637523
Side View
Table 63.0%Crown 36.1°Girdle: MED-THKPavilion 37.5°Culet: NoneDepth 65.6%

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: $10,682 NZD|Low: $1,255 NZD|High: $13,223 NZD|Avg: $4,144 NZD|-19.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9$1,255 NZD
Retailer 4$1,453 NZD
Retailer 7$1,511 NZD
Retailer 3$1,665 NZD
Retailer 5$2,159 NZD
Retailer 2$2,269 NZD
Retailer 10$2,358 NZD
Retailer 8$2,837 NZD
Retailer 11$4,484 NZD
Retailer 6$5,474 NZD
Brilliant Earth$10,682 NZD

30 data points across 11 retailers

11 retailers$1,255 NZD to $10,682 NZD

A
Cheapest Retailer
-
$1,255 NZD
$706 USD
Final sale: no returns
A
Retailer 2
-
$1,453 NZD
£644 GBP
View
A
Retailer 3
-
$1,511 NZD
$850 USD
View
B+
Retailer 4
-
$1,665 NZD
$937 USD
View
B+
Retailer 5
-
$2,159 NZD
£957 GBP
View
B+
Retailer 6
-
$2,269 NZD
€1,216 EUR
View
B+
Retailer 7
-
$2,358 NZD
$1,327 USD
View
B+
Retailer 8
-
$2,837 NZD
$1,596 USD
View
B
Retailer 9
-
$4,484 NZD
$2,523 USD
View
B
Retailer 10
-
$5,474 NZD
£2,425 GBP
View
Most Expensive
B
Brilliant Earth
21684254A · Nov 2
$10,682 NZD
$6,010 USD
View
10 more retailers have this diamond
Prices start from $1,255 NZDSave up to $9,427 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
5.05ct Cushion
$1,255 NZD