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Round|Natural|GIA

1.50ct E SI1 Round Natural Diamond

VG • E/SI1 • GIA 1515431729

Certificate GIA 1515431729

Diamond specifications and retailer prices

From $10,278 NZD
HK$45,100 HKD
As of October 29, 2026
Save $17,080 NZD (62%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $27,359 NZD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 1515431729. Listed at 24 retailers as of October 29, 2026, with prices from $10,278 to $27,359, a $17,080 spread on the same certified stone. Diamond Quarter lists it at $27,359. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 1515431729
Dimensions7.16 × 7.08 × 4.56 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Girdle conditionFaceted
Top View
7.16 mm7.08 mm1.50 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1515431729
Side View
Table 55.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 64.4%

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: $14,348 NZD|Low: $10,117 NZD|High: $23,196 NZD|Avg: $13,605 NZD|-0.9%
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 29, 2026
Retailer 6$10,278 NZD
Retailer 7$10,469 NZD
Retailer 9$10,784 NZD
Retailer 15$10,957 NZD
Retailer 8$11,598 NZD
Retailer 10$11,598 NZD
Retailer 4$11,636 NZD
Retailer 3$12,565 NZD
Retailer 5$12,757 NZD
Retailer 17$12,908 NZD
Retailer 2$13,283 NZD
Retailer 21$13,283 NZD
Retailer 14$13,451 NZD
Retailer 16$13,728 NZD
Retailer 1$14,348 NZD
Retailer 13$14,369 NZD
Retailer 19$14,499 NZD
Retailer 18$15,426 NZD
Retailer 20$16,889 NZD
Retailer 12$19,433 NZD
Retailer 11$23,196 NZD

32 data points across 21 retailers

24 retailers$10,278 NZD to $27,359 NZD

A
Retailer 1
-
$10,005 NZD
$5,619 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$10,278 NZD
HK$45,100 HKD
View
A
Retailer 3
-
$10,469 NZD
$5,880 USD
View
A
Retailer 4
-
$10,784 NZD
$6,057 USD
View
A
Retailer 5
-
$10,957 NZD
$6,154 USD
View
A
Retailer 6
-
$11,598 NZD
$6,514 USD
View
B+
Retailer 7
-
$11,598 NZD
$6,514 USD
View
Final sale: no returns
A
Retailer 8
-
$11,636 NZD
$6,535 USD
View
A
Retailer 9
-
$12,565 NZD
$7,057 USD
View
A
Retailer 10
-
$12,757 NZD
$7,165 USD
View
A
Retailer 11
-
$12,908 NZD
£5,709 GBP
View
A
Retailer 12
-
$13,283 NZD
$7,460 USD
View
A
Retailer 13
-
$13,283 NZD
$7,460 USD
View
A
Retailer 14
-
$13,451 NZD
A$11,623 AUD
View
Price last confirmed 7 days ago
A
Retailer 15
-
$13,728 NZD
$7,710 USD
View
B+
Retailer 16
-
$14,348 NZD
£6,345 GBP
View
B+
Retailer 17
-
$14,369 NZD
€7,686 EUR
View
B+
Retailer 18
-
$14,499 NZD
$8,143 USD
View
B+
Retailer 19
-
$15,369 NZD
$8,632 USD
View
B+
Retailer 20
-
$15,426 NZD
$8,664 USD
View
B+
Retailer 21
-
$16,889 NZD
ZAR 153,238 ZAR
View
B+
Retailer 22
-
$19,433 NZD
£8,594 GBP
View
B
Retailer 23
-
$23,196 NZD
$13,028 USD
View
Most Expensive
B
Diamond Quarter
1.5SI1E1529E8EAN · Oct 29
$27,359 NZD
£12,099 GBP
View
23 more retailers have this diamond
Prices start from $10,278 NZDSave up to $17,080 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
1.50ct Round
$10,278 NZD