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Round|Natural|GIA

1.70ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 1539543587

Certificate GIA 1539543587

Diamond specifications and retailer prices

From $4,313 AUD
As of November 5, 2026
Save $2,766 AUD (39%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $7,079 AUD at Moon Ocean · As of November 6, 2026
View at Moon Ocean

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1539543587. Listed at 5 retailers as of November 5, 2026, with prices from $4,313 to $7,079, a $2,766 spread on the same certified stone. Moon Ocean lists it at $7,079. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1539543587
Dimensions7.58 × 7.61 × 4.78 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.58 mm7.61 mm1.70 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539543587
Side View
Table 57.0%Crown 34°Girdle: Slightly ThickPavilion 41.8°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $7,079 AUD|Low: $2,980 AUD|High: $7,103 AUD|Avg: $3,891 AUD|-0.3%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$2,980 AUD
Retailer 8$3,051 AUD
Retailer 6$3,657 AUD
Retailer 3$4,313 AUD
Retailer 4$4,874 AUD
Retailer 2$5,605 AUD
Retailer 5$6,255 AUD
Moon Ocean$7,079 AUD

14 data points across 8 retailers

5 retailers$4,313 AUD to $7,079 AUD

A
Cheapest Retailer
-
$4,313 AUD
B+
Retailer 2
-
$4,874 AUD
View
B
Retailer 3
-
$5,605 AUD
View
B
Retailer 4
-
$6,255 AUD
View
Most Expensive
B
Moon Ocean
NVN-073C2AF11-587 · Nov 6
$7,079 AUD
£3,902 GBP
View
4 more retailers have this diamond
Prices start from $4,313 AUDSave up to $2,766 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.

A
1.70ct Round
$4,313 AUD