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Cushion|Natural|GIA

1.70ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5231935687

Certificate GIA 5231935687

Diamond specifications and retailer prices

From $5,143 AUD
As of November 6, 2026
6 retailers carry this diamond
Most expensive: $7,876 AUD at MOH London · As of October 21, 2026
View at MOH London

About this 1.7ct natural cushion diamond

This 1.7ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231935687. Listed at 6 retailers as of November 6, 2026. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.33°
OriginNatural
Grading LabGIA
CertificateGIA 5231935687
Dimensions7.77 × 6.12 × 4.27 mm
L/W Ratio1.27
Top View
7.77 mm6.12 mm1.70 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231935687
Side View
Table 62.0%CrownGirdle: MED-VTKPavilion 35.33°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: $7,876 AUD|Low: $3,427 AUD|High: $8,552 AUD|Avg: $5,611 AUD|-7.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 23, 2026
Retailer 5$3,427 AUD
Retailer 3$4,244 AUD
Retailer 6$4,807 AUD
Retailer 7$5,143 AUD
Retailer 2$5,552 AUD
Retailer 8$6,650 AUD
Retailer 4$7,091 AUD
MOH London$7,876 AUD

23 data points across 8 retailers

6 retailers

Retailer 1
-
$3,427 AUD
Price last confirmed 14 days ago
Retailer 2
-
$4,244 AUD
View
Price last confirmed 8 days ago
Retailer 3
-
$4,807 AUD
View
Price last confirmed 15 days ago
B+
Retailer 4
-
$5,143 AUD
View
Retailer 5
-
$7,091 AUD
View
Price last confirmed 17 days ago
Most Expensive
MOH London
DF45831CF · Oct 21
$7,876 AUD
£4,261 GBP
View
Price last confirmed 16 days ago
5 more retailers have this diamond
Prices start from $5,143 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 Cushion
$5,143 AUD