Round|Natural|GIA

1.70ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 6421992372

Certificate GIA 6421992372

Diamond specifications and retailer prices

From $5,837 AUD
$4,105 USD
As of October 25, 2026
Save $6,461 AUD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $12,844 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.7ct natural round diamond

This 1.7ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6421992372. Listed at 20 retailers as of October 25, 2026, with a 111% 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

1.70
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 6421992372
Dimensions7.48 × 7.37 × 4.80 mm
L/W Ratio1.01
Top View
7.48 mm7.37 mm1.70 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6421992372
Side View
Table 55.0%Crown 38.5°Girdle: ThickPavilion 39.8°Culet: NoneDepth 64.7%

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: Oct 25
Current: $7,421 AUD|Low: $5,054 AUD|High: $12,379 AUD|Avg: $7,647 AUD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 5$5,837 AUD
Retailer 8$5,919 AUD
Retailer 4$6,066 AUD
Retailer 7$6,421 AUD
Retailer 1$7,421 AUD
Retailer 3$8,195 AUD
Retailer 9$9,139 AUD
Retailer 6$11,120 AUD
Retailer 2$12,298 AUD

35 data points across 9 retailers

20 retailers$5,837 AUD to $12,298 AUD

B+
Cheapest Retailer
-
$5,837 AUD
$4,105 USD
B+
Retailer 2
-
$5,898 AUD
$4,148 USD
View
B+
Retailer 3
-
$5,919 AUD
$4,163 USD
View
B+
Retailer 4
-
$6,066 AUD
$4,266 USD
View
B+
Retailer 5
-
$6,067 AUD
$4,267 USD
View
B+
Retailer 6
-
$6,141 AUD
$4,319 USD
View
B+
Retailer 7
-
$6,421 AUD
$4,516 USD
View
Final sale: no returns
B+
Retailer 8
-
$6,957 AUD
$4,893 USD
View
Price last confirmed 27 days ago
B+
Retailer 9
-
$6,957 AUD
$4,893 USD
View
Price last confirmed 29 days ago
B+
Retailer 10
-
$7,077 AUD
$4,977 USD
View
B
Retailer 11
-
$7,342 AUD
$5,164 USD
View
B+
Retailer 12
-
$7,421 AUD
£4,110 GBP
View
B
Retailer 13
-
$7,650 AUD
$5,380 USD
View
B
Retailer 14
-
$7,650 AUD
$5,380 USD
View
B
Retailer 15
-
$7,906 AUD
$5,560 USD
View
B
Retailer 16
-
$8,028 AUD
$5,646 USD
View
Price last confirmed 29 days ago
B
Retailer 17
-
$8,195 AUD
€5,489 EUR
View
B
Retailer 18
-
$11,120 AUD
$7,820 USD
View
B
Retailer 19
-
$12,298 AUD
£6,810 GBP
View
Most Expensive
C
NZ Jewellers
bff5df65-5216-47ee-9b5d-5d99672620a2 · Sep 28
$12,844 AUD
$9,033 USD
View
Price last confirmed 31 days ago
19 more retailers have this diamond
Prices start from $5,837 AUDSave up to $6,461 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 Round
$5,837 AUD