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Radiant|Natural|GIA

1.70ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 6542405819

Certificate GIA 6542405819

Diamond specifications and retailer prices

From $11,011 AUD
$7,717 USD
As of November 1, 2026
Save $12,510 AUD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $23,521 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.7ct natural radiant diamond

This 1.7ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542405819. Listed at 15 retailers as of October 30, 2026, with prices from $11,011 to $23,521, a $12,510 spread on the same certified stone. NZ Jewellers lists it at $23,521. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.70
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542405819
Dimensions7.80 × 5.99 × 4.17 mm
L/W Ratio1.30
Culet sizeNone
Top View
7.80 mm5.99 mm1.70 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542405819
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.7%

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 1
Current: $13,251 AUD|Low: $11,011 AUD|High: $19,836 AUD|Avg: $13,834 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9$11,011 AUD
Retailer 10$11,701 AUD
Retailer 3$11,761 AUD
Retailer 11$11,859 AUD
Retailer 2$12,936 AUD
Retailer 8$12,996 AUD
Retailer 5$13,136 AUD
Retailer 1$13,251 AUD
Retailer 4$14,602 AUD
Retailer 7$17,277 AUD
Retailer 6$19,599 AUD

38 data points across 11 retailers

15 retailers$11,011 AUD to $23,521 AUD

B+
Cheapest Retailer
-
$11,011 AUD
$7,717 USD
B+
Retailer 2
-
$11,701 AUD
$8,200 USD
View
B+
Retailer 3
-
$11,761 AUD
$8,242 USD
View
B+
Retailer 4
-
$11,859 AUD
$8,311 USD
View
B+
Retailer 5
-
$12,741 AUD
$8,929 USD
View
B+
Retailer 6
-
$12,936 AUD
$9,066 USD
View
Retailer 7
-
$12,996 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$13,136 AUD
£7,249 GBP
View
B+
Retailer 9
-
$13,251 AUD
£7,312 GBP
View
B
Retailer 10
-
$14,602 AUD
€9,746 EUR
View
B
Retailer 11
-
$14,700 AUD
$10,302 USD
View
Retailer 12
-
$15,482 AUD
$10,850 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$17,277 AUD
ZAR 195,607 ZAR
View
B
Retailer 14
-
$19,599 AUD
£10,815 GBP
View
Most Expensive
B
NZ Jewellers
1d54afd2-dea2-45ca-b8fb-7682312c287a · Oct 30
$23,521 AUD
$16,484 USD
View
14 more retailers have this diamond
Prices start from $11,011 AUDSave up to $12,510 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+
1.70ct Radiant
$11,011 AUD