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Round|Natural|GIA

1.70ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2528386444

Certificate GIA 2528386444

Diamond specifications and retailer prices

From $4,638 AUD
As of November 6, 2026
Save $2,698 AUD (37%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,336 AUD at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.7ct natural round diamond

This 1.7ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2528386444. Listed at 10 retailers as of November 5, 2026, with prices from $4,638 to $7,336, a $2,698 spread on the same certified stone. Cape Diamonds lists it at $7,336. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2528386444
Dimensions7.57 × 7.62 × 4.78 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.57 mm7.62 mm1.70 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2528386444
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.0%

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 6
Current: $7,336 AUD|Low: $4,601 AUD|High: $7,387 AUD|Avg: $5,826 AUD|+1.5%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$4,638 AUD
Retailer 2$4,842 AUD
Retailer 5$5,404 AUD
Retailer 7$5,637 AUD
Retailer 6$6,025 AUD
Retailer 3$6,757 AUD
Cape Diamonds$7,336 AUD

44 data points across 7 retailers

10 retailers$4,638 AUD to $7,336 AUD

B+
Cheapest Retailer
-
$4,638 AUD
B+
Retailer 2
-
$4,842 AUD
View
B+
Retailer 3
-
$5,404 AUD
View
B+
Retailer 4
-
$5,637 AUD
View
B
Retailer 5
-
$5,720 AUD
View
Retailer 6
-
$6,009 AUD
View
Price last confirmed 21 days ago
B
Retailer 7
-
$6,025 AUD
View
B
Retailer 8
-
$6,225 AUD
View
B
Retailer 9
-
$6,757 AUD
View
Most Expensive
B
Cape Diamonds
cert_2528386444 · Nov 5
$7,336 AUD
ZAR 81,429 ZAR
View
9 more retailers have this diamond
Prices start from $4,638 AUDSave up to $2,698 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
$4,638 AUD