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Radiant|Natural|GIA

1.50ct D SI1 Radiant Natural Diamond

GD • D/SI1 • GIA 6551562090

Certificate GIA 6551562090

Diamond specifications and retailer prices

From $8,699 AUD
As of November 6, 2026
Save $7,386 AUD (46%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $19,466 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551562090. Listed at 21 retailers as of November 4, 2026, with a 85% 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
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551562090
Dimensions7.53 × 5.81 × 3.96 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Knot, Crystal, Cavity, Feather, Indented Natural, Cloud
Top View
7.53 mm5.81 mm1.50 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551562090
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.3%

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: $10,805 AUD|Low: $8,606 AUD|High: $16,551 AUD|Avg: $11,978 AUD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 10$8,699 AUD
Retailer 5$9,144 AUD
Retailer 11$9,415 AUD
Retailer 8$10,342 AUD
Retailer 3$10,681 AUD
Retailer 1$10,805 AUD
Retailer 4$11,224 AUD
Retailer 2$11,815 AUD
Retailer 6$12,575 AUD
Retailer 7$14,119 AUD
Retailer 9$16,085 AUD
Retailer 12$16,366 AUD

29 data points across 12 retailers

21 retailers$8,699 AUD to $16,085 AUD

A
Cheapest Retailer
-
$8,699 AUD
A
Retailer 2
-
$9,144 AUD
View
A
Retailer 3
-
$9,415 AUD
View
Retailer 4
-
$10,023 AUD
View
Price last confirmed 26 days ago
B+
Retailer 5
-
$10,342 AUD
View
B+
Retailer 6
-
$10,600 AUD
View
B+
Retailer 7
-
$10,603 AUD
View
B+
Retailer 8
-
$10,681 AUD
View
Final sale: no returns
Retailer 9
-
$10,801 AUD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
$10,805 AUD
View
Retailer 11
-
$11,224 AUD
View
Price last confirmed 16 days ago
B+
Retailer 12
-
$11,322 AUD
View
Retailer 13
-
$11,639 AUD
View
Price last confirmed 20 days ago
B+
Retailer 14
-
$11,815 AUD
View
Retailer 15
-
$11,882 AUD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
$12,575 AUD
View
Retailer 17
-
$13,429 AUD
View
Price last confirmed 19 days ago
B+
Retailer 18
-
$14,119 AUD
View
B
Retailer 19
-
$16,085 AUD
View
Retailer 20
-
$16,366 AUD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
f42ccd64-ad72-432e-93e6-6ce9df867252 · Oct 17
$19,466 AUD
$13,375 USD
View
Price last confirmed 20 days ago
20 more retailers have this diamond
Prices start from $8,699 AUDSave up to $7,386 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 Radiant
$8,699 AUD