Radiant|Natural|GIA

1.56ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 6445505545

Certificate GIA 6445505545

Diamond specifications and retailer prices

From $5,803 AUD
As of November 5, 2026
Save $5,861 AUD (50%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $12,282 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.56ct natural radiant diamond

This 1.56ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6445505545. Listed at 22 retailers as of November 4, 2026, with a 101% 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

1.56
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6445505545
Dimensions7.56 × 5.89 × 4.18 mm
L/W Ratio1.28
Top View
7.56 mm5.89 mm1.56 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6445505545
Side View
Table 74.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 71.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $7,230 AUD|Low: $5,705 AUD|High: $11,837 AUD|Avg: $7,623 AUD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 9$5,705 AUD
Retailer 7$6,069 AUD
Retailer 10$6,142 AUD
Retailer 8$6,270 AUD
Retailer 3$6,864 AUD
Retailer 1$7,230 AUD
Retailer 2$7,402 AUD
Retailer 4$8,184 AUD
Retailer 5$8,959 AUD
Retailer 6$11,664 AUD

36 data points across 10 retailers

22 retailers$5,803 AUD to $11,664 AUD

Retailer 1
-
$5,705 AUD
Price last confirmed 17 days ago
B+
Retailer 2
-
$5,803 AUD
View
B+
Retailer 3
-
$6,069 AUD
View
B+
Retailer 4
-
$6,142 AUD
View
Final sale: no returns
B+
Retailer 5
-
$6,270 AUD
View
B+
Retailer 6
-
$6,295 AUD
View
B+
Retailer 7
-
$6,475 AUD
View
B+
Retailer 8
-
$6,608 AUD
View
Retailer 9
-
$6,653 AUD
View
Price last confirmed 38 days ago
Retailer 10
-
$6,653 AUD
View
Price last confirmed 37 days ago
B+
Retailer 11
-
$6,864 AUD
View
B+
Retailer 12
-
$7,230 AUD
View
Retailer 13
-
$7,402 AUD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
$7,466 AUD
View
B+
Retailer 15
-
$7,466 AUD
View
Retailer 16
-
$7,677 AUD
View
Price last confirmed 39 days ago
B+
Retailer 17
-
$7,728 AUD
View
Retailer 18
-
$8,108 AUD
View
Price last confirmed 15 days ago
B+
Retailer 19
-
$8,184 AUD
View
B+
Retailer 20
-
$8,959 AUD
View
B
Retailer 21
-
$11,664 AUD
View
Most Expensive
NZ Jewellers
839ae32f-3b2c-486c-9f25-6c59ac598efa · Sep 30
$12,282 AUD
$8,439 USD
View
Price last confirmed 37 days ago
21 more retailers have this diamond
Prices start from $5,803 AUDSave up to $5,861 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.

B+
1.56ct Radiant
$5,803 AUD