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Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 6565020551

Certificate GIA 6565020551

Diamond specifications and retailer prices

From $5,600 AUD
As of November 6, 2026
Save $6,859 AUD (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $13,176 AUD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6565020551. Listed at 25 retailers as of November 1, 2026, with a 122% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565020551
Dimensions7.06 × 7.10 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.06 mm7.10 mm1.50 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565020551
Side View
Table 56.0%Crown 38°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 64.5%

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 6
Current: $7,583 AUD|Low: $5,525 AUD|High: $12,697 AUD|Avg: $7,838 AUD|-1.0%
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
November 3, 2026
Retailer 2$5,600 AUD
Retailer 6$5,868 AUD
Retailer 10$6,031 AUD
Retailer 5$6,181 AUD
Retailer 4$6,222 AUD
Retailer 19$6,542 AUD
Retailer 17$6,680 AUD
Retailer 18$7,015 AUD
Retailer 1$7,583 AUD
Retailer 11$7,941 AUD
Retailer 7$7,946 AUD
Retailer 12$8,045 AUD
Retailer 8$8,121 AUD
Retailer 13$8,208 AUD
Retailer 14$8,325 AUD
Retailer 9$8,440 AUD
Retailer 15$9,104 AUD
Retailer 3$9,616 AUD
Retailer 16$12,460 AUD

25 data points across 19 retailers

25 retailers$5,600 AUD to $12,460 AUD

A
Cheapest Retailer
-
$5,600 AUD
A
Retailer 2
-
$5,868 AUD
View
Retailer 3
-
$6,031 AUD
View
Price last confirmed 22 days ago
A
Retailer 4
-
$6,181 AUD
View
A
Retailer 5
-
$6,222 AUD
View
A
Retailer 6
-
$6,680 AUD
View
A
Retailer 7
-
$7,015 AUD
View
Retailer 8
-
$7,434 AUD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$7,527 AUD
View
B+
Retailer 10
-
$7,583 AUD
View
B+
Retailer 11
-
$7,770 AUD
View
Retailer 12
-
$7,878 AUD
View
Price last confirmed 29 days ago
Retailer 13
-
$7,878 AUD
View
Price last confirmed 21 days ago
Retailer 14
-
$7,878 AUD
View
Price last confirmed 22 days ago
Retailer 15
-
$7,941 AUD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
$7,946 AUD
View
B+
Retailer 17
-
$8,045 AUD
View
Retailer 18
-
$8,121 AUD
View
Price last confirmed 7 days ago
B+
Retailer 19
-
$8,208 AUD
View
B+
Retailer 20
-
$8,325 AUD
View
Retailer 21
-
$9,089 AUD
View
Price last confirmed 28 days ago
B+
Retailer 22
-
$9,104 AUD
View
B
Retailer 23
-
$9,616 AUD
View
B
Retailer 24
-
$12,460 AUD
View
Most Expensive
NZ Jewellers
e99821fd-24ca-470d-b8fb-9f3c19eadba6 · Sep 26
$13,176 AUD
$9,053 USD
View
Price last confirmed 40 days ago
24 more retailers have this diamond
Prices start from $5,600 AUDSave up to $6,859 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
$5,600 AUD