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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 $8,217 AUD
HK$45,100 HKD
As of October 29, 2026
Save $13,655 AUD (62%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $21,872 AUD 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 $8,217 to $21,872, a $13,655 spread on the same certified stone. Diamond Quarter lists it at $21,872. 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: $11,470 AUD|Low: $8,088 AUD|High: $18,544 AUD|Avg: $10,876 AUD|-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$8,217 AUD
Retailer 7$8,370 AUD
Retailer 9$8,622 AUD
Retailer 15$8,760 AUD
Retailer 8$9,272 AUD
Retailer 10$9,272 AUD
Retailer 4$9,302 AUD
Retailer 3$10,045 AUD
Retailer 5$10,199 AUD
Retailer 17$10,319 AUD
Retailer 2$10,619 AUD
Retailer 21$10,619 AUD
Retailer 14$10,754 AUD
Retailer 16$10,974 AUD
Retailer 1$11,470 AUD
Retailer 13$11,487 AUD
Retailer 19$11,591 AUD
Retailer 18$12,332 AUD
Retailer 20$13,502 AUD
Retailer 12$15,536 AUD
Retailer 11$18,544 AUD

32 data points across 21 retailers

24 retailers$8,217 AUD to $21,872 AUD

A
Retailer 1
-
$7,998 AUD
$5,619 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$8,217 AUD
HK$45,100 HKD
View
A
Retailer 3
-
$8,370 AUD
$5,880 USD
View
A
Retailer 4
-
$8,622 AUD
$6,057 USD
View
A
Retailer 5
-
$8,760 AUD
$6,154 USD
View
A
Retailer 6
-
$9,272 AUD
$6,514 USD
View
B+
Retailer 7
-
$9,272 AUD
$6,514 USD
View
Final sale: no returns
A
Retailer 8
-
$9,302 AUD
$6,535 USD
View
A
Retailer 9
-
$10,045 AUD
$7,057 USD
View
A
Retailer 10
-
$10,199 AUD
$7,165 USD
View
A
Retailer 11
-
$10,319 AUD
£5,709 GBP
View
A
Retailer 12
-
$10,619 AUD
$7,460 USD
View
A
Retailer 13
-
$10,619 AUD
$7,460 USD
View
A
Retailer 14
-
$10,754 AUD
View
Price last confirmed 7 days ago
A
Retailer 15
-
$10,974 AUD
$7,710 USD
View
B+
Retailer 16
-
$11,470 AUD
£6,345 GBP
View
B+
Retailer 17
-
$11,487 AUD
€7,686 EUR
View
B+
Retailer 18
-
$11,591 AUD
$8,143 USD
View
B+
Retailer 19
-
$12,287 AUD
$8,632 USD
View
B+
Retailer 20
-
$12,332 AUD
$8,664 USD
View
B+
Retailer 21
-
$13,502 AUD
ZAR 153,238 ZAR
View
B+
Retailer 22
-
$15,536 AUD
£8,594 GBP
View
B
Retailer 23
-
$18,544 AUD
$13,028 USD
View
Most Expensive
B
Diamond Quarter
1.5SI1E1529E8EAN · Oct 29
$21,872 AUD
£12,099 GBP
View
23 more retailers have this diamond
Prices start from $8,217 AUDSave up to $13,655 AUD

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
$8,217 AUD