Radiant|Natural|GIA

1.56ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 6445505545

Certificate GIA 6445505545

Diamond specifications and retailer prices

From $3,987 USD
As of November 5, 2026
Save $4,027 USD (50%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,439 USD 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
Color
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: $4,968 USD|Low: $3,920 USD|High: $8,133 USD|Avg: $5,238 USD|-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$3,920 USD
Retailer 7$4,170 USD
Retailer 10$4,220 USD
Retailer 8$4,308 USD
Retailer 3$4,716 USD
Retailer 1$4,968 USD
Retailer 2$5,086 USD
Retailer 4$5,623 USD
Retailer 5$6,156 USD
Retailer 6$8,014 USD

36 data points across 10 retailers

22 retailers$3,987 USD to $8,014 USD

Retailer 1
-
$3,920 USD
Price last confirmed 17 days ago
B+
Retailer 2
-
$3,987 USD
View
B+
Retailer 3
-
$4,170 USD
View
B+
Retailer 4
-
$4,220 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,308 USD
View
B+
Retailer 6
-
$4,325 USD
View
B+
Retailer 7
-
$4,449 USD
View
B+
Retailer 8
-
$4,540 USD
View
Retailer 9
-
$4,571 USD
View
Price last confirmed 38 days ago
Retailer 10
-
$4,571 USD
View
Price last confirmed 37 days ago
B+
Retailer 11
-
$4,716 USD
View
B+
Retailer 12
-
$4,968 USD
View
Retailer 13
-
$5,086 USD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
$5,130 USD
View
B+
Retailer 15
-
$5,130 USD
View
Retailer 16
-
$5,275 USD
View
Price last confirmed 39 days ago
B+
Retailer 17
-
$5,310 USD
View
Retailer 18
-
$5,571 USD
View
Price last confirmed 15 days ago
B+
Retailer 19
-
$5,623 USD
View
B+
Retailer 20
-
$6,156 USD
View
B
Retailer 21
-
$8,014 USD
View
Most Expensive
NZ Jewellers
839ae32f-3b2c-486c-9f25-6c59ac598efa · Sep 30
$8,439 USD
View
Price last confirmed 37 days ago
21 more retailers have this diamond
Prices start from $3,987 USDSave up to $4,027 USD

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
$3,987 USD