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Radiant|Natural|GIA

1.71ct D SI1 Radiant Natural Diamond

VG • D/SI1

Diamond specifications and retailer prices

From $17,520 AUD
CA$17,093 CAD
As of October 30, 2026
Save $8,341 AUD (32%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $25,861 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.71ct natural radiant diamond

This 1.71ct natural radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 9 retailers as of October 30, 2026, with prices from $17,520 to $25,861, a $8,341 spread on the same certified stone. NZ Jewellers lists it at $25,861. 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

1.71
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions6.77 × 6.71 × 4.48 mm
L/W Ratio1.01
Top View
6.77 mm6.71 mm1.71 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 67.0%CrownGirdle: MediumPavilionCuletDepth 66.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $25,861 AUD|Low: $17,520 AUD|High: $25,861 AUD|Avg: $20,253 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 30, 2026
Retailer 6$17,520 AUD
Retailer 3$18,255 AUD
Retailer 2$19,472 AUD
Retailer 5$19,777 AUD
Retailer 7$20,228 AUD
Retailer 4$20,537 AUD
Retailer 8$21,726 AUD
NZ Jewellers$25,861 AUD

3 data points across 8 retailers

9 retailers$17,520 AUD to $25,861 AUD

B
Cheapest Retailer
-
$17,520 AUD
CA$17,093 CAD
B
Retailer 2
-
$18,255 AUD
$12,823 USD
View
B
Retailer 3
-
$19,472 AUD
$13,678 USD
View
B
Retailer 4
-
$19,777 AUD
$13,892 USD
View
B
Retailer 5
-
$20,228 AUD
$14,209 USD
View
Retailer 6
-
$20,537 AUD
$14,426 USD
View
Price last confirmed 56 days ago
B
Retailer 7
-
$20,537 AUD
$14,426 USD
View
B
Retailer 8
-
$21,726 AUD
$15,261 USD
View
Most Expensive
C
NZ Jewellers
f0080fb6-c8b6-49c4-98b1-ab1809aada6d · Oct 30
$25,861 AUD
$18,166 USD
View
8 more retailers have this diamond
Prices start from $17,520 AUDSave up to $8,341 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
1.71ct Radiant
$17,520 AUD