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15.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG579385501

Shape and cutting style on the report: Round brilliant

Certificate IGI LG579385501

Diamond specifications and retailer prices

From $8,971 NZD
$5,056 USD
As of October 29, 2026
Save $31,625 NZD (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $61,728 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 15.09ct lab-grown round diamond

This 15.09ct lab-grown round sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG579385501 or 579385501. Listed at 12 retailers as of October 29, 2026, with a 353% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

15.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579385501
Dimensions16.02 × 15.92 × 9.69 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
16.02 mm15.92 mm15.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579385501
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.6%

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: Oct 29
Current: $61,728 NZD|Low: $8,612 NZD|High: $61,728 NZD|Avg: $20,162 NZD
Do Amore Diamonds
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
October 31, 2026
Retailer 10$8,971 NZD
Retailer 8$9,254 NZD
Retailer 13$9,402 NZD
Retailer 15$10,048 NZD
Retailer 4$10,782 NZD
Retailer 2$13,050 NZD
Retailer 9$13,050 NZD
Retailer 14$13,637 NZD
Retailer 6$13,854 NZD
Retailer 12$16,082 NZD
Retailer 3$18,208 NZD
Retailer 5$24,711 NZD
Retailer 7$34,535 NZD
Retailer 11$40,596 NZD
Do Amore Diamonds$61,728 NZD

40 data points across 15 retailers

12 retailers$8,971 NZD to $40,596 NZD

A
Cheapest Retailer
-
$8,971 NZD
$5,056 USD
A
Retailer 2
-
$9,254 NZD
£4,107 GBP
View
B+
Retailer 3
-
$9,402 NZD
$5,299 USD
View
B+
Retailer 4
-
$10,048 NZD
$5,663 USD
View
Final sale: no returns
B+
Retailer 5
-
$13,050 NZD
$7,355 USD
View
B+
Retailer 6
-
$13,050 NZD
$7,355 USD
View
B+
Retailer 7
-
$13,637 NZD
$7,686 USD
View
B+
Retailer 8
-
$13,854 NZD
HK$61,000 HKD
View
B
Retailer 9
-
$16,082 NZD
$9,064 USD
View
B
Retailer 10
-
$24,711 NZD
$13,927 USD
View
B
Retailer 11
-
$40,596 NZD
$22,880 USD
View
Most Expensive
Do Amore Diamonds
27-04D79734D · Oct 31
$61,728 NZD
$34,790 USD
View
Price under review
11 more retailers have this diamond
Prices start from $8,971 NZDSave up to $31,625 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
15.09ct Round
$8,971 NZD