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Cushion|Lab Grown|IGI

10.30ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG778694861

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG778694861

Diamond specifications and retailer prices

From $76,939 NZD
$43,188 USD
As of October 28, 2026
Save $9,428 NZD (11%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $86,367 NZD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 10.3ct lab-grown cushion diamond

This 10.3ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778694861 or 778694861. Listed at 6 retailers as of October 28, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

10.30
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.8°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778694861
Dimensions14.21 × 11.98 × 8.13 mm
L/W Ratio1.19
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
14.21 mm11.98 mm10.30 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778694861
Side View
Table 59.0%Crown 30.8°Girdle: MED-STKPavilion 38.9°Culet: NoneDepth 67.9%

Caratlytics Score

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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 28
Current: $86,367 NZD|Low: $35,915 NZD|High: $355,073 NZD|Avg: $151,262 NZD|-6.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 18, 2026
Retailer 4$35,915 NZD
Retailer 7$76,939 NZD
Retailer 5$79,084 NZD
Retailer 2$83,647 NZD
Brilliant Earth$86,367 NZD
Retailer 3$109,703 NZD
Retailer 10$125,721 NZD
Retailer 11$160,565 NZD
Retailer 9$193,359 NZD
Retailer 12$223,436 NZD
Retailer 8$318,318 NZD
Retailer 6$355,073 NZD

9 data points across 12 retailers

6 retailers$76,939 NZD to $86,367 NZD

A
Cheapest Retailer
-
$76,939 NZD
$43,188 USD
Final sale: no returns
A
Retailer 2
-
$79,084 NZD
$44,392 USD
View
A
Retailer 3
-
$83,647 NZD
$46,953 USD
View
Most Expensive
A
Brilliant Earth
21399789Y · Oct 28
$86,367 NZD
$48,480 USD
View
3 more retailers have this diamond
Prices start from $76,939 NZDSave up to $9,428 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
10.30ct Cushion
$76,939 NZD